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LD39015xx
150 mA low quiescent current low noise voltage regulator
Features

Input voltage from 1.5 to 5.5 V Ultra low dropout voltage (80 mV typ. at 100 mA load) Very low quiescent current (18 A typ. at no load, 35 A typ. at 150 mA load, 1 A max in off mode) Very low noise without bypass capacitor (29 VRMS at VOUT = 0.8 V) Output voltage tolerance: 2.0% @ 25 C 150 mA guaranteed output current Wide range of output voltages available on request: 0.8 V to 3.3 V with 100 mV step Logic-controlled electronic shutdown Compatible with ceramic capacitors CO = 1 F Internal current and thermal limit Available in SOT666 and SOT23-5L packages Temperature range: -40 C to 125 C from 1.5 V to 5.5 V with a typical dropout voltage of 80 mV. It is stable with ceramic capacitor. The ultra-low drop voltage, low quiescent current and low noise features make it suitable for low power battery-powered applications. Power supply rejection is 65 dB at low frequencies and starts to roll off at 10 kHz. Enable logic control function puts the LD39015xx in shut-down mode allowing a total current consumption lower than 1 A. The device also includes short-circuit constant current limiting and thermal protection. Typical applications are mobile phones, personal digital assistants (PDAs), cordless phones or similar battery-powered systems.
SOT666 SOT23-5L

Description
The LD39015xx series provides 150 mA maximum current from an input voltage ranging Table 1. Device summary
Part numbers SOT666 LD39015XX08 LD39015XX10 LD39015XX12 LD39015XX125 LD39015XX15 LD39015XX18 LD39015XX25 LD39015XX33 LD39015XG15R LD39015XG18R
(1) (1)
Order codes Output voltages SOT23-5L LD39015M08R LD39015M10R LD39015M12R LD39015M125R LD39015M15R LD39015M18R LD39015M25R LD39015M33R 0.8 V 1.0 V 1.2 V 1.25 V 1.5 V 1.8 V 2.5 V 3.3 V LD39015XG08R LD39015XG10R
(1)
LD39015XG12R
LD39015XG25R (1) LD39015XG33R
1. Available on request. Other voltages available on request from 0.8 V to 3.3 V in 100 mV step.
February 2009
Rev 3
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Contents
LD39015xx
Contents
1 2 3 4 5 6 7 8 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
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LD39015xx
Diagram
1
Figure 1.
Diagram
Block diagram
IN
OUT
BandGap 1.22 V
R1 Trimming
Thermal Protection
R2
Enable EN GND
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Pin configuration
LD39015xx
2
Figure 2.
Pin configuration
Pin connection (top view)
SOT666
SOT23-5L
Table 2.
Pin description
Pin n Symbol Function Enable pin logic input: Low=shutdown, High=active Common ground. Input voltage of the LDO Output voltage Not connected Not connected
SOT666 1 2 3 4 5 6
SOT23-5L 3 2 1 5 4 EN GND IN OUT NC NC
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LD39015xx
Typical application
3
Figure 3.
Typical application
Typical application circuit
VIN 1 F
IN
OUT 1 F
VOUT Load
VEN
EN
GND
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Maximum ratings
LD39015xx
4
Table 3.
Symbol VIN VOUT VEN IOUT PD TSTG TOP
Maximum ratings
Absolute maximum ratings
Parameter DC input voltage DC output voltage Enable input voltage Output current Power dissipation Storage temperature range Operating junction temperature range Value -0.3 to 7 - 0.3 to VI + 0.3 - 0.3 to VI + 0.3 Internally limited Internally limited -65 to 150 -40 to 125 Unit V V V mA mW C C
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. All values are referred to GND. Thermal data
Parameter Thermal resistance junction-ambient Thermal resistance junction-case SOT23-5L 255 81 SOT666 132 56 Unit C/W C/W
Table 4.
Symbol RthJA RthJC
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LD39015xx
Electrical characteristics
5
Electrical characteristics
TJ = 25 C, VIN = VOUT(NOM) + 1 V, CIN = COUT = 1 F, IOUT = 1 mA, VEN = VIN, unless otherwise specified.
Table 5.
Symbol VIN VUVLO
Electrical characteristics (1)
Parameter Operating input voltage Turn-on threshold Turn-off threshold VOUT > 1.5V, IOUT = 1mA, TJ = 25C VOUT > 1.5V, IOUT = 1mA, -40C < TJ < 125C VOUT 1.5V, IOUT = 1mA VOUT 1.5V, IOUT = 1mA, -40C < TJ < 125C 1.30 -2.0 -3.0 10 30 0.01 10 0.002 40 80 29 100 mV Test conditions Min. 1.5 1.45 1.35 2.0 % 3.0 Typ. Max. 5.5 1.48 Unit V V mV
VOUT
VOUT accuracy
VOUT VOUT VOUT VOUT VDROP eN
Static line regulation Transient line regulation (2) Static load regulation Transient load regulation (2) Dropout voltage (3) Output noise voltage
VOUT +1V VIN 5.5V, IOUT = 1mA VIN = +500mV, IOUT = 1mA, TR = TF = 5s IOUT = 1mA to 150mA IOUT = 1mA to 150mA, TR = TF = 5s IOUT = 100mA, VOUT > 1.5V -40C < TJ < 125C 1.1kHz to 100kHz, IOUT = 10mA, VOUT = 0.8V VIN = VOUTNOM + 0.5V +/-VRIPPLE VRIPPLE = 0.1V, Freq. = 1kHz IOUT = 10mA VIN = VOUTNOM + 0.5V +/-VRIPPLE VRIPPLE = 0.1V, Freq.=10kHz IOUT = 10mA IOUT = 0mA IOUT = 0mA, -40C < TJ < 125C IOUT = 0 to 150mA
%/V mVpp %/mA mVpp mV VRMS
65 dB 62 18 50 38 A 70 0.001 350 0.4 0.9 1 mA V V 7/16
SVR
Supply voltage rejection VOUT = 1.5V
IQ
Quiescent current
IOUT = 0 to 150mA -40C < TJ< 125C VIN input current in OFF MODE: VEN = GND
ISC
Short circuit current Enable input logic low
RL = 0 VIN = 1.5V to 5.5V, -40C < TJ < 125C VIN = 1.5V to 5.5V, -40C < TJ < 125C
VEN Enable input logic high
Electrical characteristics Table 5.
Symbol IEN TON TSHDN
LD39015xx
Electrical characteristics (continued) (1)
Parameter Enable pin input current Turn on time (4) Thermal shutdown Hysteresis Output capacitor Capacitance (see typical performance characteristics for stability) 1 VEN = VIN Test conditions Min. Typ. 0.1 30 160 C 20 22 F Max. 100 Unit nA s
COUT
1. For VOUT(NOM) < 1.2 V, VIN = 1.5 V 2. All transient values are guaranteed by design, not production tested 3. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. This specification does not apply for output voltages below 1.5 V 4. Turn-on time is the time measured between the enable input just exceeding VEN High Value and the output voltage just reaching 95 % of its nominal value
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LD39015xx
Typical performance characteristics
6
Figure 4.
0.85 0.84 0.83 0.82 0.81 0.8 0.79 0.78 0.77 0.76 0.75 -50
Typical performance characteristics
Output voltage vs. temperature
IOUT=1mA IOUT=100mA
VOUT[V]
Figure 5.
0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0
Output voltage vs. input voltage
VOUT [V]
VIN=1.5V
VIN=1.5V
0
50 Temp [C]
100
150
1
2
3 VIN [V]
4
5
6
Figure 6.
0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 0
Dropout voltage vs. output current Figure 7.
2.4 ESR @ 100 KHz [Ohm] 2.1 1.8 1.5 1.2 0.9 0.6 0.3 0 0
COUT stability region
CIN=1 F, VIN=VEN=1.5 to 5.5 V IOUT=1 mA to 0.15 A
Vdropout [V]
STABILITY REGION
0.05
0.1
0.15
0.2
0.25
IOUT [A]
5 10 15 20 COUT [F] (nominal value)
25
Figure 8.
Supply voltage rejection vs. frequency
Figure 9.
Output noise voltage vs. frequency
75 70 65 60 55 50 45 40 35 30 25 20 15 10 100
800
IOUT=10 mA, VIN=4.3 V, CIN=COUT= 1F
700
VOUT=3.3 V
600 500
SVR [dB]
nV/Hz
IOUT = 10mA Vripple = 0.1Vpp
400 300 200 100
1000
10000 Freq [Hz]
100000
0 1000
10000
100000
FREQ [Hz]
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Typical performance characteristics Figure 10. Quiescent current vs. input voltage Figure 11. Load transient
LD39015xx
100 80 Iq [A] 60 40 20
VIN=VINH, CIN=COUT=1F, IOUT=0.15A
0 1.4 1.9 2.4 2.9 3.4 3.9 4.4 4.9 5.4 5.9 VIN[V]
VEN = VIN = 1.5V, IOUT = 1mA to 0.15A, CIN = COUT = 1F, tr = tf = 5s
Figure 12. Line transient
Figure 13. Enable transient
VIN = VEN = 1.5 to 5.5V, IOUT = 1mA, COUT = 1F, tr = tf = 5s
VIN = 1.5V, VEN = 0 to 1V, IOUT = 1mA, CIN = COUT = 1F
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LD39015xx
Package mechanical data
7
Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK is an ST trademark.
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Package mechanical data
LD39015xx
SOT23-5L mechanical data
mm. Dim. Min. A A1 A2 b C D E e H L 2.60 0.10 0.90 0.00 0.90 0.35 0.09 2.80 1.50 0.95 3.00 0.60 102.3 3.9 Typ. Max. 1.45 0.10 1.30 0.50 0.20 3.00 1.75 Min. 35.4 0.0 35.4 13.7 3.5 110.2 59.0 37.4 118.1 23.6 Typ. Max. 57.1 3.9 51.2 19.7 7.8 118.1 68.8 mils.
7049676D
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LD39015xx
Package mechanical data
SOT666 mechanical data
mm. Dim. Min. A A3 D E E1 L1 L2 L3 b b1 e e1 0.20 8 10 12 0.53 0.13 1.50 1.50 1.10 0.11 0.10 0.05 0.17 0.27 0.50 0.2 8 10 12 Typ. 0.57 0.17 1.66 1.65 1.20 0.19 0.23 0.10 0.25 0.34 Max. 0.60 0.18 1.70 1.70 1.30 0.26 0.30 Min. 0.021 0.005 0.059 0.059 0.043 0.004 0.004 0.002 0.17 0.27 0.5 Typ. 0.022 0.006 0.065 0.065 0.047 0.007 0.009 0.004 0.25 0.34 Max. 0.024 0.007 0.067 0.067 0.051 0.010 0.012 inch.
7673701C
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Package mechanical data
LD39015xx
Tape & reel SOT23-xL mechanical data
mm. Dim. Min. A C D N T Ao Bo Ko Po P 3.13 3.07 1.27 3.9 3.9 3.23 3.17 1.37 4.0 4.0 12.8 20.2 60 14.4 3.33 3.27 1.47 4.1 4.1 0.123 0.120 0.050 0.153 0.153 0.127 0.124 0.054 0.157 0.157 13.0 Typ. Max. 180 13.2 0.504 0.795 2.362 0.567 0.131 0.128 0.0.58 0.161 0.161 0.512 Min. Typ. Max. 7.086 0.519 inch.
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LD39015xx
Revision history
8
Table 6.
Date
Revision history
Document revision history
Revision 1 2 3 Initial release. Modified: Table 5 on page 7. Modified: Table 1 on page 1. Changes
13-Nov-2007 11-Apr-2008 12-Feb-2009
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LD39015xx
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