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LT3009 Series 3A IQ, 20mA Low Dropout Linear Regulators DESCRIPTION
The LT(R)3009 Series are micropower, low dropout voltage (LDO) linear regulators. The devices supply 20mA output current with a dropout voltage of 280mV. No-load quiescent current is 3A. Ground pin current remains at less than 5% of output current as load increases. In shutdown, quiescent current is less than 1A. The LT3009 regulators optimize stability and transient response with low ESR ceramic capacitors, requiring a minimum of only 1F The regulators do not require the . addition of ESR as is common with other regulators. Internal protection circuitry includes current limiting, thermal limiting, reverse-battery protection and reversecurrent protection. The LT3009 Series are ideal for applications that require moderate output drive capability coupled with ultralow standby power consumption. The device is available in fixed output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and 5V, and as an adjustable device with an output voltage range down to the 600mV reference. The LT3009 is available in the 6-lead DFN and 8-lead SC70 packages.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
FEATURES
n n n n n n n n n n n n n
Ultralow Quiescent Current: 3A Input Voltage Range: 1.6V to 20V Output Current: 20mA Dropout Voltage: 280mV Adjustable Output (VADJ = VOUT(MIN) = 600mV) Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V Output Tolerance: 2% Over Load, Line and Temperature Stable with Low ESR, Ceramic Output Capacitors (1F minimum) Shutdown Current: <1A Current Limit Protection Reverse-Battery Protection Thermal Limit Protection 8-Lead SC70 and 2mm x 2mm DFN Packages
APPLICATIONS
n n n
Low Current Battery-Powered Systems Keep-Alive Power Supplies Remote Monitoring Utility Meters Hotel Door Locks
TYPICAL APPLICATION
3.3V, 20mA Supply with Shutdown
500 IN 1F LT3009-3.3 SHDN GND
3009 TA01a
Dropout Voltage/Quiescent Current
450 DROPOUT VOLTAGE (mV) 400 350 300 250 200 150 100 50 0 -50 -25 0 IQ DROPOUT VOLTAGE ILOAD = 20mA 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 25 50 75 100 125 150 TEMPERATURE (C) 3009 TA01b
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VIN 3.75V TO 20V
OUT 1F
VOUT 3.3V 20mA
QUIESCENT CURRENT (A)
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LT3009 Series
(Note 1)
ABSOLUTE MAXIMUM RATINGS
IN Pin Voltage .........................................................22V OUT Pin Voltage ......................................................22V Input-to-Output Differential Voltage ........................22V ADJ Pin Voltage ......................................................22V SHDN Pin Voltage (Note 8) .....................................22V Output Short-Circuit Duration .......................... Indefinite Operating Junction Temperature Range (Notes 2, 3) (E, I Grades) ......................................-40C to 125C Storage Temperature Range...................-65C to 150C Lead Temperature: Soldering, 10 sec SC8 Package Only ............................................. 300C
PIN CONFIGURATION
TOP VIEW TOP VIEW ADJ/NC* 1 OUT 2 OUT 3 7 6 GND 5 SHDN 4 IN SHDN GND GND GND 1 2 3 4 8 7 6 5 NC ADJ/NC* OUT IN
DC PACKAGE 6-LEAD (2mm 2mm) PLASTIC DFN TJMAX = 125C, JA = 65C/W TO 85C/W** EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB
SC8 PACKAGE 8-LEAD PLASTIC SC70 TJMAX = 125C, JA = 75C/W TO 95C/W**
* The ADJ pin is not connected in fixed output voltage versions. ** See the Applications Information section.
ORDER INFORMATION
LEAD FREE FINISH LT3009EDC#PBF LT3009IDC#PBF LT3009EDC-1.2#PBF LT3009IDC-1.2#PBF LT3009EDC-1.5#PBF LT3009IDC-1.5#PBF LT3009EDC-1.8#PBF LT3009IDC-1.8#PBF LT3009EDC-2.5#PBF LT3009IDC-2.5#PBF LT3009EDC-3.3#PBF LT3009IDC-3.3#PBF LT3009EDC-5#PBF LT3009IDC-5#PBF TAPE AND REEL LT3009EDC#TRPBF LT3009IDC#TRPBF LT3009EDC-1.2#TRPBF LT3009IDC-1.2#TRPBF LT3009EDC-1.5#TRPBF LT3009IDC-1.5#TRPBF LT3009EDC-1.8#TRPBF LT3009IDC-1.8#TRPBF LT3009EDC-2.5#TRPBF LT3009IDC-2.5#TRPBF LT3009EDC-3.3#TRPBF LT3009IDC-3.3#TRPBF LT3009EDC-5#TRPBF LT3009IDC-5#TRPBF PART MARKING* LCQX LCQX LDTW LDTW LDVB LDVB LDKC LDKC LDTY LDTY LDKD LDKD LDKF LDKF PACKAGE DESCRIPTION 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN TEMPERATURE RANGE -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C
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LT3009 Series
ORDER INFORMATION
LEAD FREE FINISH LT3009ESC8#PBF LT3009ESC8-1.2#PBF LT3009ESC8-1.5#PBF LT3009ESC8-1.8#PBF LT3009ESC8-2.5#PBF LT3009ESC8-3.3#PBF LT3009ESC8-5#PBF LEAD BASED FINISH LT3009EDC LT3009IDC LT3009EDC-1.2 LT3009IDC-1.2 LT3009EDC-1.5 LT3009IDC-1.5 LT3009EDC-1.8 LT3009IDC-1.8 LT3009EDC-2.5 LT3009IDC-2.5 LT3009EDC-3.3 LT3009IDC-3.3 LT3009EDC-5 LT3009IDC-5 LT3009ESC8 LT3009ESC8-1.2 LT3009ESC8-1.5 LT3009ESC8-1.8 LT3009ESC8-2.5 LT3009ESC8-3.3 LT3009ESC8-5 TAPE AND REEL LT3009ESC8#TRPBF LT3009ESC8-1.2#TRPBF LT3009ESC8-1.5#TRPBF LT3009ESC8-1.8#TRPBF LT3009ESC8-2.5#TRPBF LT3009ESC8-3.3#TRPBF LT3009ESC8-5#TRPBF TAPE AND REEL LT3009EDC#TR LT3009IDC#TR LT3009EDC-1.2#TR LT3009IDC-1.2#TR LT3009EDC-1.5#TR LT3009IDC-1.5#TR LT3009EDC-1.8#TR LT3009IDC-1.8#TR LT3009EDC-2.5#TR LT3009IDC-2.5#TR LT3009EDC-3.3#TR LT3009IDC-3.3#TR LT3009EDC-5#TR LT3009IDC-5#TR LT3009ESC8#TR LT3009ESC8-1.2#TR LT3009ESC8-1.5#TR LT3009ESC8-1.8#TR LT3009ESC8-2.5#TR LT3009ESC8-3.3#TR LT3009ESC8-5#TR PART MARKING* LCQY LDTX LDVC LDKG LDTZ LDKH LDKJ PART MARKING* LCQX LCQX LDTW LDTW LDVB LDVB LDKC LDKC LDTY LDTY LDKD LDKD LDKF LDKF LCQY LDTX LDVC LDKG LDTZ LDKH LDKJ PACKAGE DESCRIPTION 8-Lead Plastic SC70 8-Lead Plastic SC70 8-Lead Plastic SC70 8-Lead Plastic SC70 8-Lead Plastic SC70 8-Lead Plastic SC70 8-Lead Plastic SC70 PACKAGE DESCRIPTION 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 6-Lead (2mm x 2mm) Plastic DFN 8-Lead Plastic SC70 8-Lead Plastic SC70 8-Lead Plastic SC70 8-Lead Plastic SC70 8-Lead Plastic SC70 8-Lead Plastic SC70 8-Lead Plastic SC70 TEMPERATURE RANGE -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C TEMPERATURE RANGE -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C -40C to 125C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
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LT3009 Series ELECTRICAL CHARACTERISTICS
PARAMETER Operating Voltage Regulated Output Voltage (Note 4) LT3009-1.2: VIN = 1.7V, ILOAD = 100A 1.7V < VIN < 20V, 1A < ILOAD < 20mA LT3009-1.5: VIN = 2V, ILOAD = 100A 2V < VIN < 20V, 1A < ILOAD < 20mA LT3009-1.8: VIN = 2.3V, ILOAD = 100A 2.3V < VIN < 20V, 1A < ILOAD < 20mA LT3009-2.5: VIN = 3V, ILOAD = 100A 3V < VIN < 20V, 1A < ILOAD < 20mA LT3009-3.3: VIN = 3.8V, ILOAD = 100A 3.8V < VIN < 20V, 1A < ILOAD < 20mA LT3009-5: VIN = 5.5V, ILOAD = 100A 3.8V < VIN < 20V, 1A < ILOAD < 20mA ADJ Pin Voltage (Notes 3, 4) Line Regulation (Note 3) VIN = 1.6V, ILOAD = 100A 1.6V < VIN < 20V, 1A < ILOAD < 20mA LT3009-1.2: LT3009-1.5: LT3009-1.8: LT3009-2.5: LT3009-3.3: LT3009-5: LT3009: LT3009-1.2: LT3009-1.5: LT3009-1.8: LT3009-2.5: LT3009-3.3: LT3009-5: LT3009: VIN = 1.7V to 20V, ILOAD = 1mA VIN = 2.0V to 20V, ILOAD = 1mA VIN = 2.3V to 20V, ILOAD = 1mA VIN = 3.0V to 20V, ILOAD = 1mA VIN = 3.8V to 20V, ILOAD = 1mA VIN = 5.5V to 20V, ILOAD = 1mA VIN = 1.6V to 20V, ILOAD = 1mA VIN = 1.7V, ILOAD = 1A to 20mA VIN = 2V, ILOAD = 1A to 20mA VIN = 2.3V, ILOAD = 1A to 20mA VIN = 3V, ILOAD = 1A to 20mA VIN = 3.8V, ILOAD = 1A to 20mA VIN = 5.5V, ILOAD = 1A to 20mA VIN = 1.6V, ILOAD = 1A to 20mA
The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25C. (Note 2)
CONDITIONS
l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l
MIN 1.6 1.188 1.176 1.485 1.470 1.782 1.764 2.475 2.45 3.267 3.234 4.950 4.900 594 588
TYP 1.2 1.2 1.5 1.5 1.8 1.8 2.5 2.5 3.3 3.3 5 5 600 600 0.8 1.0 1.2 1.7 2.2 3.3 0.4 1.4 1.8 2.1 2.9 3.9 5.8 0.7 115 170 250 280 3
MAX 20 1.212 1.224 1.515 1.530 1.818 1.836 2.525 2.55 3.333 3.366 5.050 5.100 606 612 3.0 3.8 4.5 6.3 8.3 12.5 1.5 6 7.5 9.0 12.5 16.5 25 3 180 250 250 350 310 410 350 450 6
UNITS V V V V V V V V V V V V V mV mV mV mV mV mV mV mV mV mV mV mV mV mV mV mV mV mV mV mV mV mV mV mV A A A A A A A
Load Regulation (Note 3)
Dropout Voltage VIN = VOUT(NOMINAL) (Notes 5, 6)
ILOAD = 100A ILOAD = 100A ILOAD = 1mA ILOAD = 1mA ILOAD = 10mA ILOAD = 10mA ILOAD = 20mA ILOAD = 20mA
Quiescent Current (Notes 6, 7) GND Pin Current VIN = VOUT(NOMINAL) + 0.5V (Notes 6, 7)
ILOAD = 0A ILOAD = 0A ILOAD = 0A ILOAD = 100A ILOAD = 1mA ILOAD = 10mA ILOAD = 20mA
3 6 23 200 450
6 12 50 500 1000
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LT3009 Series
ELECTRICAL CHARACTERISTICS
PARAMETER Output Voltage Noise (Note 9) ADJ Pin Bias Current Shutdown Threshold SHDN Pin Current Quiescent Current in Shutdown Ripple Rejection (Note 3)
The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25C. (Note 2)
CONDITIONS , COUT = 1F ILOAD = 20mA, BW = 10Hz to 100kHz
l
MIN -10 0.2
TYP 150 0.3 0.66 0.36 0.5
MAX 10 1.5 1 1.6 <1
UNITS VRMS nA V V A A A
VOUT = Off to On VOUT = On to Off VSHDN = 0V, VIN = 20V VSHDN = 20V, VIN = 20V VIN = 6V, VSHDN = 0V VIN - VOUT = 1.5V, VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 20mA LT3009 LT3009-1.2 LT3009-1.5 LT3009-1.8 LT3009-2.5 LT3009-3.3 LT3009-5
l l l l l
60 57 55.5 54 52 49 44
l l
72 68 67 66 63 61 56 60
dB dB dB dB dB dB dB mA mA 350 10 A A
Current Limit Input Reverse Leakage Current Reverse Output Current
VIN = 20V, VOUT = 0 VIN = VOUT(NOMINAL) + 1V, VOUT = - 5% VIN = -20V, VOUT = 0 VOUT = 1.2V, VIN = 0
22 200 0.6
Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LT3009 regulators are tested and specified under pulse load conditions such that TJ TA. The LT3009E is 100% tested at TA = 25C. Performance at -40C and 125C is assured by design, characterization and correlation with statistical process controls. The LT3009I is guaranteed over the full -40C to 125C operating junction temperature range. Note 4: Operating conditions are limited by maximum junction temperature. The regulated output voltage specification will not apply for all possible combinations of input voltage and output current. When operating at the maximum input voltage, the output current range must be limited. When operating at the maximum output current, the input voltage must be limited. Note 5: Dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a specified output current. In dropout, the output voltage equals (VIN - VDROPOUT). For the LT3009-1.2, dropout voltage will be limited by the minimum input voltage under some voltage/ load conditions.
Note 6: To satisfy minimum input voltage requirements, the LT3009 adjustable version is tested and specified for these conditions with an external resistor divider (61.9k bottom, 280k top) which sets VOUT to 3.3V. The external resistor divider adds 9.69A of DC load on the output. This external current is not factored into GND pin current. Note 7: GND pin current is tested with VIN = VOUT(NOMINAL) + 0.5V and a current source load. GND pin current will increase in dropout. For the fixed output voltage versions, an internal resistor divider will add to the GND pin current (2A for the LT3009-5, 1A for the LT3009-1.2, LT3009-1.5, LT3009-1.8, LT3009-2.5 and LT3009-3.3). See the GND Pin Current curves in the Typical Performance Characteristics section. Note 8: The SHDN pin can be driven below GND only when tied to the IN pin directly or through a pull-up resistor. If the SHDN pin is driven below GND by more than -0.3V while IN is powered, the output will turn on. Note 9: Output noise is listed for the adjustable version with the ADJ pin connected to the OUT pin. See the RMS Output Noise vs Load Current curve in the Typical Performance Characteristics Section.
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LT3009 Series TYPICAL PERFORMANCE CHARACTERISTICS
Dropout Voltage
450 400 DROPOUT VOLTAGE (mV) DROPOUT VOLTAGE (mV) 350 300 250 200 150 100 50 0 0 5 15 10 OUTPUT CURRENT (mA) 20
3009 G01
TA = 25C, unless otherwise noted.
Dropout Voltage
450 400 350 300 20mA 250 200 150 100 50 0 -50 -25 0 25 50 75 100 125 150
3009 G02
Minimum Input Voltage
1.6 1.4 MINIMUM INPUT VOLTAGE (V) 1.2 1 0.8 0.6 0.4 0.2 0 -50 -25 0 25 50 75 100 125 150
3009 G03
ILOAD = 20mA TA = 125C
ILOAD = 20mA
TA = 25C
10mA
1mA
100A
TEMPERATURE (C)
TEMPERATURE (C)
ADJ Pin Voltage
0.612 0.610 0.608 OUTPUT VOLTAGE (V) ADJ PIN VOLTAGE (V) 0.606 0.604 0.602 0.600 0.598 0.596 0.594 0.592 0.590 0.588 -50 -25 0 25 50 75 100 125 150
3009 G04
Output Voltage LT3009-1.2
1.224 1.220 1.216 1.208 1.204 1.200 1.196 1.192 1.188 1.184 1.180 1.176 -50 -25 OUTPUT VOLTAGE (V) 1.212 ILOAD = 100A 1.530 1.525 1.520 1.515 1.510 1.505 1.500 1.495 1.490 1.485 1.480
Output Voltage LT3009-1.5
ILOAD = 100A
ILOAD = 100A
0
25
50
75
100 125 150
3009 G27
1.475 1.470 -50 -25
0
25
50
75
100 125 150
3009 G28
TEMPERATURE (C)
TEMPERATURE (C)
TEMPERATURE (C)
Output Voltage LT3009-1.8
1.836 1.830 1.824 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 1.818 1.812 1.806 1.800 1.794 1.788 1.782 1.776 1.770 1.764 -50 -25 ILOAD = 100A 2.55 2.54 2.53 2.52 2.51 2.50 2.49 2.48 2.47 2.46 0 25 50 75 100 125 150
3009 G05
Output Voltage LT3009-2.5
ILOAD = 100A 3.366 3.355 3.344 OUTPUT VOLTAGE (V) 3.333 3.322 3.311 3.300 3.289 3.278 3.267 3.256
Output Voltage LT3009-3.3
ILOAD = 100A
2.45 -50 -25
0
25
50
75
100 125 150
3009 G29
3.245 3.234 -50 -25
0
25
50
75
100 125 150
3009 G06
TEMPERATURE (C)
TEMPERATURE (C)
TEMPERATURE (C)
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LT3009 Series
TA = 25C, unless otherwise noted. Adjustable Version Quiescent Current
6 5 QUIESCENT CURRENT (A) 4 3 2 1 0 0 25 50 75 100 125 150
3009 G08
TYPICAL PERFORMANCE CHARACTERISTICS
Output Voltage LT3009-5
5.100 5.075 OUTPUT VOLTAGE (V) 5.050 5.025 5.000 4.975 4.950 4.925 4.900 -50 -25 0 25 50 75 100 125 150
3009 G07
ADJ Pin Bias Current
10 8 ADJ PIN BIAS CURRENT (nA) 6 4 2 0 -2 -4 -6 -8 -10 -50 -25
ILOAD = 100A
-50 -25
0
25
50
75
100 125 150
3009 G09
TEMPERATURE (C)
TEMPERATURE (C)
TEMPERATURE (C)
Quiescent Current
20 18 QUIESCENT CURRENT (A) 16 14 12 10 8 6 4 2 0 0 1 2 34567 INPUT VOLTAGE (V) 8 9 10
3009 G10
Quiescent Current
LT3009-1.2 LT3009-1.5 LT3009-1.8 QUIESCENT CURRENT (A) 20 18 16 14 12 10 8 6 4 2 0 0 1 2 34567 INPUT VOLTAGE (V) 8 9 10
3009 G30
GND Pin Current LT3009-1.2
LT3009-2.5 LT3009-3.3 LT3009-5 GND PIN CURRENT (A) 500 450 400 350 300 250 200 150 100 50 0 0 1 2 34567 INPUT VOLTAGE (V) 8 9 10
3009 G31
RL = 60, IL = 20mA
RL = 120, IL = 10mA
RL = 12k, IL = 100A RL = 1.2k, IL = 1mA
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LT3009 Series TYPICAL PERFORMANCE CHARACTERISTICS
GND Pin Current LT3009-1.5
500 450 400 GND PIN CURRENT (A) 350 300 250 200 150 100 50 0 0 1 2 34567 INPUT VOLTAGE (V) 8 9 10
3009 G32
TA = 25C, unless otherwise noted. GND Pin Current LT3009-2.5
500 450 RL = 125, IL = 20mA
GND Pin Current LT3009-1.8
500 450 RL = 90, IL = 20mA GND PIN CURRENT (A)
RL = 75, IL = 20mA GND PIN CURRENT (A)
400 350 300 250 200 150 100 50 0 0 1 2
400 350 300 250 200 150 100 50 0
RL = 150, IL = 10mA
RL = 180, IL = 10mA
RL = 250, IL = 10mA
RL = 15k, IL = 100A RL = 1.5k, IL = 1mA
RL = 18k, IL = 100A RL = 1.8k, IL = 1mA 34567 INPUT VOLTAGE (V) 8 9 10
RL = 25k, IL = 100A RL = 2.5k, IL = 1mA 0 1 2 34567 INPUT VOLTAGE (V) 8 9 10
3009 G11
3009 G33
GND Pin Current LT3009-3.3
500 450 400 GND PIN CURRENT (A) 350 300 250 200 150 100 50 0 0 1 2 34567 INPUT VOLTAGE (V) 8 9 10
3009 G12
GND Pin Current LT3009-5
450 RL = 165, IL = 20mA GND PIN CURRENT (A) 400 350 300 250 200 150 100 50 0 0 1 2 34567 INPUT VOLTAGE (V) 8 9 10
3009 G13
GND Pin Current vs ILOAD
1000 VIN = 3.8V VOUT = 3.3V
RL = 250, IL = 20mA
GND CURRENT (A)
100
RL = 330, IL = 10mA
RL = 500, IL = 10mA
10
RL = 33k, IL = 100A RL = 3.3k, IL = 1mA
RL = 50k, IL = 100A RL = 5k, IL = 1mA 1 0.001 0.01 0.1 1 LOAD (mA) 10 100
3009 G14
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LT3009 Series
TA = 25C, unless otherwise noted.
TYPICAL PERFORMANCE CHARACTERISTICS
SHDN Pin Thresholds
500 1.4 SHDN PIN THRESHOLD VOLTAGE (V) SHDN PIN INPUT CURRENT (nA) 1.2 1.0 0.8 OFF TO ON 0.6 0.4 0.2 0 -50 -25 0 25 50 75 100 125 150
3009 G15
SHDN Pin Input Current
1600 1400 SHDN PIN INPUT CURRENT (nA) 1200 1000 800 600 400 200 0 2 4 6 8 10 12 14 16 18 20 SHDN PIN VOLTAGE (V)
3009 G16
SHDN Pin Input Current
VSHDN = 20V
450 400 350 300 250 200 150 100 50 0
ON TO OFF
0
-50 -25
0
25
50
75
100 125 150
3009 G17
TEMPERATURE (C)
TEMPERATURE (C)
Current Limit
70 REVERSE OUTPUT CURRENT (A) 60 CURRENT LIMIT (mA) 50 VIN = 1.6V 40 30 20 10 0 VIN = 20V 50 45 40 35 30 25 20 15 10 5 0 -50 -25 0 25 50 75 100 125 150
3009 G18
Reverse Output Current
OUT = ADJ = 1.2V IN = SHDN = GND INPUT RIPPLE REJECTION (dB) 90 80 70 60 50 40
Input Ripple Rejection
VIN = 2V + 50mVRMS VOUT = 600mV ILOAD = 20mA
OUT
4.7F 30 20 10 1F
ADJ
-50 -25
0
25
50
75
100 125 150
3009 G19
0
10
100
TEMPERATURE (C)
TEMPERATURE (C)
1k 10k FREQUENCY (Hz)
100k
1M
3009 G20
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LT3009 Series TYPICAL PERFORMANCE CHARACTERISTICS
Input Ripple Rejection
80 70 INPUT RIPPLE REJECTION (dB) LOAD REGULATION (mV) 60 50 40 30 20 10 0 VIN = VOUT (NOMINAL) + 1V + 0.5VP-P RIPPLE AT f = 120Hz ILOAD = 20mA -50 -25 0 25 50 75 100 125 150
3009 G21
TA = 25C, unless otherwise noted.
Load Regulation
OUTPUT NOISE SPECTRAL DENSITY (VHz) 3.0 2.5 2.0 1.5 1.0 0.5 0 -0.5 -1.0 -50 -25 0 25 50 75 100 125 150
3009 G22
Output Noise Spectral Density
IL = 1A TO 20mA VOUT = 600mV VIN = 1.6V 100 5V 3.3V 2.5V 1.8V 1.5V 1.2V 1V 0.6V
10
1
0.1
10
100
TEMPERATURE (C)
TEMPERATURE (C)
1k 10k FREQUENCY (Hz)
100k
3009 G23
RMS Output Noise vs Load Current (10Hz to 100kHz)
700 600 OUTPUT NOISE (VRMS) 500 400 300 200 100 0 0.001 600mV 3.3V 2.5V 1.8V 1.5V 1.2V IOUT 20mA/DIV VOUT 50mV/DIV 5V
Transient Response
IOUT = 1mA TO 20mA VIN = 5.5V VOUT = 5V COUT = 1F VOUT 50mV/DIV
Transient Response
IOUT = 1mA TO 20mA VIN = 5.5V VOUT = 5V COUT = 4.7F
500s/DIV
3009 G25
IOUT 20mA/DIV 500s/DIV
3009 G26
0.01
0.1
1
10
100
3009 G24
ILOAD (mA)
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LT3009 Series
(SC70/DFN)
PIN FUNCTIONS
SHDN (Pin 1/Pin 5): Shutdown. Pulling the SHDN pin low puts the LT3009 into a low power state and turns the output off. If unused, tie the SHDN pin to VIN. The LT3009 does not function if the SHDN pin is not connected. The SHDN pin cannot be driven below GND unless tied to the IN pin. If the SHDN pin is driven below GND while IN is powered, the output will turn on. SHDN pin logic cannot be referenced to a negative rail. GND (Pins 2, 3, 4/Pin 6): Ground. Connect the bottom of the resistor divider that sets output voltage directly to GND for the best regulation. IN (Pin 5/Pin 4): Input. The IN pin supplies power to the device. The LT3009 requires a bypass capacitor at IN if the device is more than six inches away from the main input filter capacitor. In general, the output impedance of a battery rises with frequency, so it is advisable to include a bypass capacitor in battery-powered circuits. A bypass capacitor in the range of 0.1F to 10F will suffice. The LT3009 withstands reverse voltages on the IN pin with respect to ground and the OUT pin. In the case of a reversed input, which occurs with a battery plugged in backwards, the LT3009 acts as if a large resistor is in series with its input. Limited reverse current flows into the LT3009 and no reverse voltage appears at the load. The device protects both itself and the load.
OUT (Pin 6/Pins 2, 3): Output. This pin supplies power to the load. Use a minimum output capacitor of 1F to prevent oscillations. Large load transient applications require larger output capacitors to limit peak voltage transients. See the Applications Information section for more information on output capacitance and reverse output characteristics. ADJ (Pin 7/Pin 1): Adjust. This pin is the error amplifier's inverting terminal. Its 300pA typical input bias current flows out of the pin (see curve of ADJ Pin Bias Current vs Temperature in the Typical Performance Characteristics section). The ADJ pin voltage is 600mV referenced to GND and the output voltage range is 600mV to 19.5V. This pin is not connected in the fixed output voltage versions. NC (Pins 7,8/Pin 1): No Connect. For the adjustable voltage version, Pin 8 is an NC pin in the SC70 package. For the fixed voltage versions, Pin 7 and Pin 8 are NC pins in the SC70 package, and Pin 1 is an NC pin in the DFN package. NC pins are not tied to any internal circuitry. They may be floated, tied to VIN or tied to GND. Exposed Pad (Pin 7, DFN Package Only): Ground. The Exposed Pad (backside) of the DFN package is an electrical connection to GND. To ensure optimum performance, solder Pin 7 to the PCB and tie directly to Pin 6.
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Specifications for output voltages greater than 0.6V are proportional to the ratio of the desired output voltage to 0.6V: VOUT/0.6V. For example, load regulation for an output current change of 100A to 20mA is -0.7mV typical at VOUT = 0.6V. At VOUT = 5V, load regulation is: 5V * (- 0 . 7mV) = - 5 . 83mV 0 . 6V Table 1 shows resistor divider values for some common output voltages with a resistor divider current of about 1A.
Table 1. Output Voltage Resistor Divider Values
VOUT 1V 1.2V 1.5V 1.8V 2.5V 3V 3.3V 5V R1 604k 604k 590k 590k 590k 590k 619k 590k R2 402k 604k 887k 1.18M 1.87M 2.37M 2.8M 4.32M
APPLICATIONS INFORMATION
The LT3009 is a low dropout linear regulator with ultralow quiescent current and shutdown. Quiescent current is extremely low at 3A and drops well below 1A in shutdown. The device supplies up to 20mA of output current. Dropout voltage at 20mA is typically 280mV. The LT3009 incorporates several protection features, making it ideal for use in battery-powered systems. The device protects itself against both reverse-input and reverse-output voltages. In battery backup applications, where a backup battery holds up the output when the input is pulled to ground, the LT3009 acts as if a blocking diode is in series with its output and prevents reverse current flow. In applications where the regulator load returns to a negative supply, the output can be pulled below ground by as much as 22V without affecting startup or normal operation. Adjustable Operation The LT3009 has an output voltage range of 0.6V to 19.5V. Figure 1 shows that output voltage is set by the ratio of two external resistors. The IC regulates the output to maintain the ADJ pin voltage at 600mV referenced to ground. The current in R1 equals 600mV/R1 and the current in R2 is the current in R1 minus the ADJ pin bias current. The ADJ pin bias current, typically 300pA at 25C, flows out of the pin. Calculate the output voltage using the formula in Figure 1. An R1 value of 619k sets the divider current to 0.97A. Do not make R1's value any greater than 619k to minimize output voltage errors due to the ADJ pin bias current and to insure stability under minimum load conditions. In shutdown, the output turns off and the divider current is zero. Curves of ADJ Pin Voltage vs Temperature and ADJ Pin Bias Current vs Temperature appear in the Typical Performance Characteristics.
Because the ADJ pin is relatively high impedance (depending on the resistor divider used), stray capacitances at this pin should be minimized. Special attention should be given to any stray capacitances that can couple external signals onto the ADJ pin producing undesirable output transients or ripple. Extra care should be taken in assembly when using high valued resistors. Small amounts of board contamination can lead to significant shifts in output voltage. Appropriate post-assembly board cleaning measures should
VOUT = 600mV* (1 + R2/R1) - (IADJ * R2) VADJ = 600mV IADJ = 0.3nA at 25C OUTPUT RANGE = 0.6V to 19.5V
IN VIN LT3009 SHDN GND
OUT R2 ADJ R1
VOUT
3009 F0
Figure 1. Adjustable Operation
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are specified with EIA temperature characteristic codes of Z5U, Y5V, X5R and X7R. The Z5U and Y5V dielectrics provide high C-V products in a small package at low cost, but exhibit strong voltage and temperature coefficients as shown in Figures 2 and 3. When used with a 5V regulator, a 16V 10F Y5V capacitor can exhibit an effective value as low as 1F to 2F for the DC bias voltage applied and over the operating temperature range. The X5R and X7R dielectrics yield more stable characteristics and are more suitable for use as the output capacitor. The X7R type has better stability across temperature, while the X5R is less expensive and is available in higher values. One must still exercise care when using X5R and X7R capacitors; the X5R and X7R codes only specify operating temperature range and maximum capacitance change over temperature. Capacitance change due to DC bias with X5R and X7R capacitors is better than Y5V and Z5U capacitors, but can still be significant enough to drop capacitor values below appropriate levels. Capacitor DC bias characteristics tend to improve as component case size increases, but expected capacitance at operating voltage should be verified.
APPLICATIONS INFORMATION
be implemented to prevent board contamination. If the board is to be subjected to humidity cycling or if board cleaning measures cannot be guaranteed, consideration should be given to using resistors an order of magnitude smaller than in Table 1 to prevent contamination from causing unwanted shifts in the output voltage. Output Capacitance and Transient Response The LT3009 is stable with a wide range of output capacitors. The ESR of the output capacitor affects stability, most notably with small capacitors. Use a minimum output capacitor of 1F with an ESR of 3 or less to prevent oscillations. The LT3009 is a micropower device and output load transient response is a function of output capacitance. Larger values of output capacitance decrease the peak deviations and provide improved transient response for larger load current changes. Give extra consideration to the use of ceramic capacitors. Manufacturers make ceramic capacitors with a variety of dielectrics, each with different behavior across temperature and applied voltage. The most common dielectrics
20 0 CHANGE IN VALUE (%) CHANGE IN VALUE (%) X5R -20 -40 -60 Y5V -80 -100 BOTH CAPACITORS ARE 16V, 1210 CASE SIZE, 10F
40 20 0 -20 -40 -60 -80 BOTH CAPACITORS ARE 16V, 1210 CASE SIZE, 10F 50 25 75 0 TEMPERATURE (C) 100 125
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X5R
Y5V
0
2
4
8 6 10 12 DC BIAS VOLTAGE (V)
14
16
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-100 -50 -25
Figure 2. Ceramic Capacitor DC Bias Characteristics
Figure 3. Ceramic Capacitor Temperature Characteristics
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LT3009 Series APPLICATIONS INFORMATION
Voltage and temperature coefficients are not the only sources of problems. Some ceramic capacitors have a piezoelectric response. A piezoelectric device generates voltage across its terminals due to mechanical stress, similar to the way a piezoelectric accelerometer or microphone works. For a ceramic capacitor, the stress can be induced by vibrations in the system or thermal transients. The resulting voltages produced can cause appreciable amounts of noise, especially when a ceramic capacitor is used for noise bypassing. A ceramic capacitor produced Figure 4's trace in response to light tapping from a pencil. Similar vibration induced behavior can masquerade as increased output voltage noise.
VOUT = 0.6V COUT = 22F ILOAD = 10A
Thermal Considerations The LT3009's maximum rated junction temperature of 125C limits its power-handling capability. Two components comprise the power dissipated by the device: 1. Output current multiplied by the input/output voltage differential: IOUT * (VIN - VOUT) 2. GND pin current multiplied by the input voltage: IGND * VIN GND pin current is found by examining the GND Pin Current curves in the Typical Performance Characteristics section. Power dissipation equals the sum of the two components listed prior. The LT3009 regulator has internal thermal limiting designed to protect the device during overload conditions. For continuous normal conditions, do not exceed the maximum junction temperature rating of 125C. Carefully consider all sources of thermal resistance from junction to ambient including other heat sources mounted in proximity to the LT3009. For surface mount devices, heat sinking is accomplished by using the heat spreading capabilities of the PC board and its copper traces. Copper board stiffeners and plated through-holes can also be used to spread the heat generated by power devices.
VOUT 500V/DIV
100ms/DIV
3009 F04
Figure 4. Noise Resulting from Tapping on a Ceramic Capacitor
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LT3009 Series
Calculating Junction Temperature Example: Given an output voltage of 3.3V, an input voltage range of 12V 5%, an output current range of 0mA to 20mA and a maximum ambient temperature of 85C, what will the maximum junction temperature be for an application using the DC package? The power dissipated by the device is equal to: IOUT(MAX) (VIN(MAX) - VOUT) + IGND (VIN(MAX)) where, IOUT(MAX) = 20mA VIN(MAX) = 12.6V IGND at (IOUT = 20mA, VIN = 12.6V) = 0.45mA So, P = 20mA(12.6V - 3.3V) + 0.45mA(12.6V) = 191.7mW The thermal resistance will be in the range of 65C/W to 85C/W depending on the copper area. So the junction temperature rise above ambient will be approximately equal to: 0.1917W(75C/W) = 14.4C The maximum junction temperature equals the maximum junction temperature rise above ambient plus the maximum ambient temperature or: TJ(MAX) = 85C + 14.4C = 99.4C
THERMAL RESISTANCE (JUNCTION-TO-AMBIENT) 75C/W 80C/W 85C/W 90C/W 95C/W
APPLICATIONS INFORMATION
The following tables list thermal resistance for several different board sizes and copper areas. All measurements were taken in still air on 3/32" FR-4 board with one ounce copper.
Table 2: Measured Thermal Resistance for DC Package
COPPER AREA TOPSIDE* 2500mm2 1000mm2 225mm2 100mm2 50mm2 BACKSIDE 2500mm2 2500mm2 2500mm2 2500mm2 2500mm2 BOARD AREA 2500mm2 2500mm2 2500mm2 2500mm2 2500mm2 THERMAL RESISTANCE (JUNCTION-TO-AMBIENT) 65C/W 70C/W 75C/W 80C/W 85C/W
*Device is mounted on the topside.
Table 3: Measured Thermal Resistance for SC70 Package
COPPER AREA TOPSIDE* 2500mm2 1000mm2 225mm2 100mm2 50mm2 BACKSIDE 2500mm2 2500mm2 2500mm2 2500mm2 2500mm2 BOARD AREA 2500mm2 2500mm2 2500mm2 2500mm2 2500mm2
*Device is mounted on the topside.
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LT3009 Series
in (but is limited by) the resistor divider that sets output voltage. Current flows from the bottom resistor in the divider and from the ADJ pin's internal clamp through the top resistor in the divider to the external circuitry pulling OUT below ground. If IN is powered by a voltage source, OUT sources current equal to its current limit capability and the LT3009 protects itself by thermal limiting if necessary. In this case, grounding the SHDN pin turns off the LT3009 and stops OUT from sourcing current. The LT3009 incurs no damage if the ADJ pin is pulled above or below ground by 22V. If IN is left open circuit or grounded, ADJ acts like a 100k resistor in series with a diode when pulled above or below ground. In circuits where a backup battery is required, several different input/output conditions can occur. The output voltage may be held up while the input is either pulled to ground, pulled to some intermediate voltage or is left open circuit. Current flow back into the output follows the curve shown in Figure 5. If the LT3009 IN pin is forced below the OUT pin or the OUT pin is pulled above the IN pin, input current typically drops to less than 1A. This occurs if the LT3009 input is connected to a discharged (low voltage) battery and either a backup battery or a second regulator circuit holds up the output. The state of the SHDN pin has no effect in the reverse current if OUT is pulled above IN.
APPLICATIONS INFORMATION
Protection Features The LT3009 incorporates several protection features that make it ideal for use in battery-powered circuits. In addition to the normal protection features associated with monolithic regulators, such as current limiting and thermal limiting, the device also protects against reverse-input voltages, reverse-output voltages and reverse output-toinput voltages. Current limit protection and thermal overload protection protect the device against current overload conditions at the output of the device. For normal operation, do not exceed a junction temperature of 125C. The LT3009 IN pin withstands reverse voltages of 22V. The device limits current flow to less than 1mA (typically less than 220A) and no negative voltage appears at OUT. The device protects both itself and the load against batteries that are plugged in backwards. The SHDN pin cannot be driven below GND unless tied to the IN pin. If the SHDN pin is driven below GND while IN is powered, the output will turn on. SHDN pin logic cannot be referenced to a negative rail. The LT3009 incurs no damage if OUT is pulled below ground. If IN is left open circuit or grounded, OUT can be pulled below ground by 22V. No current flows from the pass transistor connected to OUT. However, current flows
100 90 REVERSE CURRENT (A) 80 70 60 50 40 30 20 10 0 0 1 23456789 OUTPUT AND ADJ VOLTAGE (V) 10 OUT CURRENT ADJ CURRENT
3009 F05
Figure 5. Reverse Output Current
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TYPICAL APPLICATIONS
Keep-Alive Power Supply
NO PROTECTION DIODES NEEDED! VIN 12V 1F IN OUT LT3009-3.3 SHDN GND 3.3V 1F LOAD: SYSTEM MONITOR, VOLATILE MEMORY, ETC.
3009 TA02
Last-Gasp Circuit
VLINE 12V TO 15V DCHARGE RLIMIT IN SUPERCAP 1F OUT LT3009-5 SHDN GND 5V 1F LINE INTERRUPT DETECT PWR FAULT GND
3009 TA03
LINE POWER
SENSE
TO MONITORING CENTER
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LT3009 Series PACKAGE DESCRIPTION
DC Package 6-Lead Plastic DFN (2mm x 2mm)
(Reference LTC DWG # 05-08-1703)
R = 0.115 TYP 0.56 0.05 (2 SIDES) 2.00 0.10 (4 SIDES) PIN 1 CHAMFER OF EXPOSED PAD 3 0.25 0.50 BSC 1.42 0.05 (2 SIDES) 0.05 0.200 REF 0.75 0.05 1 0.25 0.50 BSC 1.37 0.05 (2 SIDES) 0.00 - 0.05 BOTTOM VIEW--EXPOSED PAD
(DC6) DFN 1103
0.38 4 6
0.05
0.675 0.05 2.50 0.05 1.15 0.05 0.61 0.05 (2 SIDES)
PIN 1 BAR PACKAGE TOP MARK OUTLINE (SEE NOTE 6)
0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WCCD-2) 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE
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LT3009 Series
SC8 Package 8-Lead Plastic SC70
(Reference LTC DWG # 05-08-1639 Rev O)
0.30 MAX 0.50 REF PIN 8 1.80 - 2.20 (NOTE 4)
PACKAGE DESCRIPTION
1.00 REF
2.8 BSC 1.8 REF
1.80 - 2.40 1.15 - 1.35 (NOTE 4)
INDEX AREA (NOTE 6)
PIN 1
RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.10 - 0.40
0.50 BSC
0.15 - 0.27 8 PLCS (NOTE 3)
0.80 - 1.00 0.00 - 0.10 REF 1.00 MAX GAUGE PLANE 0.15 BSC 0.26 - 0.46
NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. DETAILS OF THE PIN 1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE INDEX AREA 7. EIAJ PACKAGE REFERENCE IS EIAJ SC-70 AND JEDEC MO-203 VARIATION BA
0.10 - 0.18 (NOTE 3)
SC8 SC70 0905 REV O
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Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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PART NUMBER LT1761 DESCRIPTION 100mA, Low Noise Micropower LDO 150mA, Low Noise Micropower LDO 500mA, Low Noise Micropower LDO 3A, Low Noise, Fast Transient Response LDOs 150mA, Low Noise Micropower VLDO 300mA, Low Noise Micropower LDO 1.5A, Low Noise, Fast Transient Response LDOs 200mA, Low Noise Micropower, Negative LDO 50mA, High Voltage, Micropower LDO COMMENTS VIN : 1.8V to 20V, VOUT = 1.22V, VDO = 0.3V, IQ = 20A, ISD < 1A, Low Noise < 20VRMS , Stable with 1F Ceramic Capacitors, ThinSOTTM Package VIN : 1.8V to 20V, VOUT = 1.22V, VDO = 0.3V, IQ = 25A, ISD < 1A, Low Noise < 20VRMS , MS8 Package VIN : 1.8V to 20V, VOUT = 1.22V, VDO = 0.3V, IQ = 30A, ISD < 1A, Low Noise < 20VRMS , S8 Package VIN : 2.7V to 20V, VOUT = 1.21V, VDO = 0.34V, IQ = 1mA, ISD < 1A, Low Noise < 40VRMS , "A" Version Stable with Ceramic Capacitors, DD and TO220-5 Packages VIN : 1.6V to 6.5V, VOUT(MIN) = 1.25V, VDO = 0.09V, IQ = 35A, ISD < 1A, Low Noise: < 30VRMS , ThinSOT Package VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.27V, IQ = 30A, ISD < 1A, Low Noise: < 20VRMS , MS8 Package VIN : 2.1V to 20V, VOUT(MIN) = 1.21V, VDO = 0.34V, IQ = 1mA, ISD < 1A, Low Noise: < 40VRMS , "A" Version Stable with Ceramic Capacitors, DD, TO220-5, SOT223 and S8 Packages VIN : -2.2V to -20V, VOUT(MIN) = 1.21V, VDO = 0.34V, IQ = 30A, ISD = 3A, Low Noise: < 30VRMS , Stable with Ceramic Capacitors,ThinSOT Package VIN : 3V to 80V, VOUT(MIN) = 1.275V, VDO = 0.3V, IQ = 30A, ISD < 1A, Low Noise: < 100VRMS , Stable with 1F Output Capacitor, MS8E Package
RELATED PARTS
LT1762 LT1763 LT1764/LT1764A LTC1844 LT1962 LT1963/LT1963A
LT1964 LT3010 LT3012/LT3012B
250mA, High Voltage, Micropower LDOs VIN : 4V to 80V, VOUT(MIN) = 1.24V, VDO = 0.4V, IQ = 40A, ISD < 1A, Low Noise: <100VRMS , Stable with 3.3F Output Capacitor, 12-Lead 4mm x 3mm DFN and 16-Lead FE Packages 250mA, High Voltage, Micropower LDOs VIN : 4V to 80V, VOUT(MIN) = 1.22V, VDO = 0.4V, IQ = 40A, ISD < 1A, with PWRGD Low Noise: < 100VRMS , Stable with 3.3F Output Capacitor, 12-Lead 4mm x 3mm DFN and 16-Lead FE Packages 20mA, High Voltage, Micropower LDO VIN : 3V to 80V, VOUT(MIN) = 1.2V, VDO = 0.35V, IQ = 7A, ISD < 1A, Low Noise: < 100VRMS , Stable with 0.47F Output Capacitor, SOT23-5 and 3mm x 3mm DFN Packages VIN : 0.9V to 10V, VOUT(MIN) = 0.20V, VDO = 0.15V, IQ = 120A, ISD < 1A, 3mm x 3mm DFN and MS8 Packages VIN : 0.9V to 10V, VOUT(MIN) = 0.20V, VDO = 0.16V, IQ = 120A, ISD < 3A, 5mm x 5mm DFN and SO8 Packages VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 40A, ISD < 1A, DFN and MS10 Packages VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 60A, ISD < 1A, DFN and TSSOP16E Packages
LT3013/LT3013B
LT3014/LT3014B
LT3020 LT3021 LT3023 LT3024 LTC3025 LTC3026 LT3027 LT3028
100mA, Low Voltage VLDO 500mA, Low Voltage VLDO Dual 100mA, Low Noise, Micropower LDO Dual 100mA/500mA, Low Noise, Micropower LDO
300mA, Low Voltage Micropower VLDO 45mV Dropout Voltage, Low Noise 110VRMS , VIN = 1.14V to 5.5V, Low IQ: 54A, 6-Lead 2mm x 2mm DFN Package 1.5A, Low Input Voltage VLDO Dual 100mA, Low Noise, Micropower LDO with Independent Inputs Dual 100mA/500mA, Low Noise, Micropower LDO with Independent Inputs 100mV Dropout Voltage, Low Noise 80VRMS , VIN = 0.9V to 5.5V, Low IQ: 950A, 10-Lead 3mm x 3mm DFN and MS10E Packages VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 40A, ISD < 1A, DFN and MS10E Packages VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 60A, ISD < 1A, DFN and TSSOP-16E Packages
ThinSOT is a trademark of Linear Technology Corporation.
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(408) 432-1900 FAX: (408) 434-0507
LT 0908 REV B * PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
www.linear.com
(c) LINEAR TECHNOLOGY CORPORATION 2007

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