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NJM2855
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION The NJM2855 is a 3-terminal low dropout voltage regulator. Advanced Bipolar technology achieves low noise, high ripple rejection. It delivers up to 5V/1A output power with the maximum input voltage of 10V. The NJM2855 is suitable for various applications such as portable / consumer devices. FEATURES High Ripple Rejection 75dB typ. (f=1kHz,Vo=3V Version) Output Noise Voltage Vno=45Vrms typ. Output capacitor with 2.2F ceramic capacitor (Vo2.7V) Output Current Io (max.)=1A High Precision Output Vo1.0% Low Dropout Voltage 0.20V typ. (Io=600mA) Internal Short Circuit Current Limit Internal Thermal Overload Protection Bipolar Technology Package Outline TO-252-3 PIN CONFIGURATION
2
PACKAGE OUTLINE
NJM2855DL1
PIN FUNCTION 1.VIN 2.GND 3.VOUT
3
1
NJM2855DL1 EQUIVALENT CIRCUIT
V IN Thermal Protection Bandgap Reference
V OUT
GND
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NJM2855
OUTPUT VOLTAGE RANK LIST The WHITE column shows applicable Voltage Rank(s)
Device Name NJM2855DL1-15 NJM2855DL1-16 NJM2855DL1-17 NJM2855DL1-18 NJM2855DL1-19 NJM2855DL1-02 NJM2855DL1-21 NJM2855DL1-22 NJM2855DL1-23 NJM2855DL1-24 NJM2855DL1-25 NJM2855DL1-26 NJM2855DL1-27 NJM2855DL1-28 NJM2855DL1-29 NJM2855DL1-03 NJM2855DL1-31 NJM2855DL1-32 NJM2855DL1-33 NJM2855DL1-34
Vout 1.5V 1.6V 1.7V 1.8V 1.9V 2.0V 2.1V 2.2V 2.3V 2.4V 2.5V 2.6V 2.7V 2.8V 2.9V 3.0V 3.1V 3.2V 3.3V 3.4V
Device Name NJM2855DL1-35 NJM2855DL1-36 NJM2855DL1-37 NJM2855DL1-38 NJM2855DL1-39 NJM2855DL1-04 NJM2855DL1-41 NJM2855DL1-42 NJM2855DL1-43 NJM2855DL1-44 NJM2855DL1-45 NJM2855DL1-46 NJM2855DL1-47 NJM2855DL1-48 NJM2855DL1-49 NJM2855DL1-05
Vout 3.5V 3.6V 3.7V 3.8V 3.9V 4.0V 4.1V 4.2V 4.3V 4.4V 4.5V 4.6V 4.7V 4.8V 4.9V 5.0V
2
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NJM2855
(Ta=25C) RATINGS UNIT +10 V 1190(*1) mW -40 +85 C -40 +150 C (*1): Mounted on glass epoxy board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers, copper area 100mm2) OPERATING VOLTAGE VIN=+2.5V ~ +8V (In case of Vo<2.3V version) ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.33F, Co=2.2F(1.7V2V), Io=30mA Load Regulation Vo/Io Io=0 1A Io=600mA Dropout Voltage(*2) VI-O ein=200mVrms,f=1kHz, Io=10mA Ripple Rejection RR Vo=3.0V Version Average Temperature Vo/Ta Ta=085C, Io=10mA Coefficient of Output Voltage f=10Hz80kHz, Io=10mA, Output Noise Voltage VNO Vo=3.0V Version(*3) Input Voltage VIN ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Power Dissipation PD Operating Temperature Topr Storage Temperature Tstg
TYP. MAX. UNIT +1.0% V 8 V 400 600 A 1300 mA 0.20 75 50 45 0.10 %/V
0.004 %/mA 0.28 V 8 dB ppm/C Vrms V
(*2): The output voltage excludes under 2.1V. (*3): Vo>2.0V : VIN=Vo+1V, Vo2.0V : VIN=3.0V The above specification is a common specification for all output voltages. Therefore, it may be different from the individual specification for a specific output voltage.
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NJM2855
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJM2855DL1 PowerDissipation
(Topr=-40~+85C,Tj=150C)
3500
Power Dissipation PD(mW)
3000 2500 2000 1500 1000 500 0 -50
on 4 layers board
on 2 layers board
-25
0
25
50
75
100
Temperature : Ta(C)
TEST CIRCUIT
A
VIN
IIN
VIN
VOUT
0.33F
NJM2855
2.2F *4
IOUT V VOU
(ceramic)
GND
*4
1.7VTYPICAL APPLICATION
VIN
VIN
VOUT
VOUT
2.2F *5
0.33F
NJM2855
GND
*5
1.7V4
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NJM2855
Input Capacitance CIN Input Capacitance CIN is required to prevent oscillation and reduce power supply ripple for applications with high power supply impedance or a long power supply line. Use the CIN value of 0.33F greater to avoid the problem. CIN should connect between GND and VIN as short as possible. Output Capacitance Co Output capacitor (Co) is required for a phase compensation of the internal error amplifier. The capacitance and the equivalent series resistance (ESR) influence stability of the regulator. If use a smaller Co, it may cause excess output noise or oscillation of the regulator due to lack of the phase compensation. Therefore, use Co with the recommended capacitance or greater value and connect between Vo terminal and GND terminal with minimal wiring. The recommended capacitance depends on the output voltage. Low voltage regulator requires greater value of the Co. Thus, check the recommended capacitance for each output voltage. Use of a greater Co reduces output noise and ripple output, and also improves transient response of the output voltage against rapid load change. This product is designed to work with any capacitor including a low ESR capacitor for the Co; however, refer "Equivalent Series Resistance vs. Output Current" and choose suitable capacitor.
TYPICAL CHARACTERISTICS
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NJM2855
3.3
NJM2855_3.0V Output Voltage vs. Input Voltage
@:Ta=25oC Co=2.2F(Ceramic)
4
NJM2855_3.0V Output Voltage vs. Output Current
3.2
3.5
3
Output Voltage : Vo(V)
Output Voltage : Vo(V)
3.1
2.5
3
Io=100mA
2
2.9
Io=0A
1.5
1 @:Ta=25oC VIN=4V Co=2.2F(Ceramic) 0 500 1000 1500 2000
2.8 Io=500mA 2.7 2.7 2.8 2.9 3 3.1 3.2 3.3 Io=1A
0.5
0
Input Voltage : VIN(V)
Output Current : Io(mA)
35
NJM2855_3.0V Ground Pin Current vs. Output Current
0.4
NJM2855_3.0V Dropout Voltage vs. Output Current
@:Ta=25oC Co=2.2F(Ceramic)
30
0.35
Ground Pin Current : IGND (mA)
0.3
Dropout Voltage:dVI-O (V)
@:Ta=25oC VIN=4.0V Co=2.2F(Ceramic) 0 200 400 600 800 1000 1200
25
0.25
20
0.2
15
0.15
10
0.1
5
0.05
0
0 0 200 400 600 800 1000 1200 1400
Output Current : IO(mA)
Output Current:Io(mA)
0
NJM2855_3.0V Load Regulation vs. Output Current
2500
NJM2855_3.0V Peak Output Current vs. Input Voltage
-10
Load Regulation : dVo/dIo(mV)
2000
-20
-30
Peak Output Current : Io MAX(mA)
@:Ta=25 C VIN=4.0V Co=2.2F(Ceramic) 0 200 400 600 800 1000 1200 1400
o
1500
-40
-50
1000
-60
500 @:Ta=25oC Co=2.2F(Ceramic) 0 4 5 6 7 8
-70
-80
Output Current : Io(mA)
Input Voltage : V IN(V)
TYPICAL CHARACTERISTICS 6
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NJM2855
NJM2855_3.0V Quiescent Current vs. Input Voltage
@:Ta=25oC Output is open. Co=2.2F(Ceramic)
6000
100
NJM2855_3.0V Output Noise Voltage vs. Output Current
@:Ta=25oC VIN=4.0V LPF:80kHz Co=2.2F(ceramic)
5000
4000
Output Noise Voltage : Vn(uVrms)
0 1 2 3 4 5 6 7 8
80
Quiescent Current : I Q (uA)
60
3000
40
2000
1000
20
0
0 0.001
0.01
0.1
1
10
100
1000
Input Voltage : V IN(V)
Output Current : Io(mA)
NJM2855_3.0V Ripple Rejection vs. Output Current
100 90 Ripple Rejection Ratio : RR (dB) 80 70 60
NJM2855_3.0V Ripple Rejection Ratio vs. Frequency
Io=10mA Io=0mA
100
90 f=1kHz
Ripple Rejection : RR (dB)
80
70 f=10kHz
60
Io=30mA
50 40 30 20 10
50
Io=100mA
40 @:Ta=25oC VIN=4V ein=200mVrms Co=2.2F(Ceramic) 0.01 0.1 1 10 100 1000
@: Ta=25oC VIN=4V ein=200mVrms Co=2.2F(Ceramic)
30
100
1k Frequency : f (Hz)
10k
100
20 0.001
Output Current : Io(mA)
100
NJM2855_3.0V Equivalent Serise Resistance vs. Output Current
Equivalent Serise Resistance : ESR( )
10 VIN=4V
1
STABLE REGION
0.1 @:Ta=25oC Co=2.2F(Ceramic) VIN=4V 0.02 0.001 0.01 0.1 1 10 100 103
Output Current : Io(mA)
TYPICAL CHARACTERISTICS
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NJM2855
0.4
NJM2855_3.0V Dropout Voltage vs. Temperature
Io=600mA Co=2.2F(Ceramic)
3.1
NJM2855_3.0V Output Voltage vs. Temperature
0.35
0.3
3.05
Dropout Voltage:dVI-O (V)
0.25
0.2
Output Voltage : Vo(V)
3
0.15
0.1
2.95
0.05
@:VIN=4.0V Io=30mA Co=2.2F(Ceramic) 2.9 -50 0 50 100
o
0 150
-50
0
50
100
150
Temperature : Ta ( C)
Temperature : Ta ( oC)
NJM2855_3.0V Quiescent Current v.s. Input Voltage
600 @:VIN=4.0V Output is open. Co=2.2F(Ceramic) 500 800 1000
NJM2855_3.0V Short Circuit Current v.s. Temperature
@:VIN=4.0V Co=2.2F(Ceramic) Output is short to ground.
400
Short Circuit Current : Isc (mA)
Quiescent Current : I Q (uA)
600
300
400
200
100
200
0 -50 0 50 100
o
0 150 -50 0 50 100 150
Temperature : Ta ( C)
Temperature : Ta ( oC)
0.1
NJM2855_3.0V Line Regulation vs. Temperature
0.03
NJM2855_3.0V Load Regulation vs. Temperature
@:VIN=4.0V Io=0-1000mA Co=2.2F(Ceramic)
0.025
Line Regulation : dVo/dIo(%/V)
0.05
Load Regulation : dVo/dIo(%/mA)
@:VIN=4.0-8.0V Io=30mA Co=2.2F(Ceramic) -50 0 50
o
0.02
0
0.015
0.01
-0.05
0.005
-0.1
100
150
0 -50
0
50
Temperature : Ta ( C)
Temperature : Ta ( C)
o
100
150
TYPICAL CHARACTERISTICS 8
Ver.2008-11-12
NJM2855
4
NJM2855_3.0V Output Voltage vs. Temperature
3.5
3
Output Voltage : Vo(V)
2.5
2
1.5
1
0.5
@:VIN=4.0V Io=30mA Co=2.2F(Ceramic) -50 0 50 100 150 200
0
Temperature : Ta ( oC)
NJM2855_3V Line Transient Response
3.1 3.08 Input Voltage 3.06 Output Voltage : Vo [V] 3.04 3.02 Output Voltage 3 2.98 2.96 2.94 0 40 80 120 Time : t [s] 160 @:Ta=25o C VIN=4V Co=2.2F Io=30mA 1 0 -1 -2 200 4 Input Voltage : VIN [V] 3 2 6 5
NJM2855_3V Load Transient Response
3.25 Output Current 3.2 3.15 Output Voltage : Vo [V] 3.1 3.05 Output Voltage 3 2.95 2.9 2.85 0 40 80 120 Time : t [s] 160 @:Ta=25 C VIN=4V Co=2.2F
o
1100 1000 900 800 700 600 500 400 300 200
[CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
Ver.2008-11-12
Output Current : Io [mA]
9

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