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NJM2885
LOW DROPOUT VOLTAGE REGULATOR
s GENERAL DESCRIPTION The NJM2885 is low dropout voltage regulator designed for portable application. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. s FEATURES qHigh Ripple Rejection 75dB typ. (f=1kHz) qOutput Noise Voltage Vno=45Vrms qOutput capacitor with 2.2F ceramic capacitor (Vo2.7V) qOutput Current Io(max.)=500mA qHigh Precision Output Vo1.0% qLow Dropout Voltage 0.18V typ. (Io=300mA) qInternal Short Circuit Current Limit qInternal Thermal Overload Protection qBipolar Technology qPackage Outline TO-252-3 s PIN CONFIGURATION 2 s PACKAGE OUTLINE
NJM2885DL1
PIN FUNCTION 1.VIN 2.GND 3.VOUT
123 NJM2885DL1
s EQUIVALENT CIRCUIT
VIN Thermal Protection Bandgap Reference VOUT
GND
s OUTPUT VOLTAGE RANK LIST Device Name Device Name VOUT NJM2885DL1-18 1.8V NJM2885DL1-30 NJM2885DL1-21 2.1V NJM2885DL1-33 NJM2885DL1-25 2.5V NJM2885DL1-35 NJM2885DL1-26 2.6V NJM2885DL1-38 NJM2885DL1-28 2.8V NJM2885DL1-05
VOUT 3.0V 3.3V 3.5V 3.8V 5.0V
NJM2885
s ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Power Dissipation Operating Temperature Storage Temperature PD Topr Tstg (Ta=25C) UNIT V mW C C
RATINGS +14 8(Tc=25C) 0.8(Ta25C) -40 +85 -40 +125
s ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.33F, Co=2.2F: Vo2.7V (Co=4.7F: Vo2.6V), Ta=25C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. Output Voltage Vo Io=30mA -1.0% +1.0% - Quiescent Current IQ Io=0mA 200 300 - Output Current Io Vo-0.3V 500 650 Line Regulation 0.10 Vo/VIN VIN=Vo+1V Vo+6.0V, Io=30mA - - Load Regulation 0.03 Vo/Io Io=0 500mA - - Dropout Voltage Io=300mA 0.18 0.28 VI-O - ein=200mVrms,f=1kHz, Io=10mA Ripple Rejection RR 75 - - Vo=3.0V Version Average Temperature Vo/Ta Ta=085C, Io=10mA 50 - - Coefficient of Output Voltage f=10Hz80kHz, Io=10mA, Output Noise Voltage VNO 45 - - Vo=3.0V Version (*note 1): 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.
UNIT V A mA %/V %/mA V dB ppm/C Vrms
NJM2885
s TEST CIRCUIT
A
VIN
IIN
VIN
VOUT
0.33F
NJM2885
GND
IOUT V VOUT
2.2F OR 4.7F(Vo2.6V)
(ceramic)
s POWER DISSIPATION VS. AMBIENT TEMPERATURE
NJU2885DL1 (Topr=-40~+85C,Tj=125C,PD=8W(TC=25C),PD=0.8W(Ta25C))
10
Power Dissipation PD(W)
8 6 4 2 0 -50
Heat Sink HS=5C/W HS=10C/W HS=20C/W Without Heat Sink -25 0 25 50 75 100
Ambient Temperature Ta(C)
NJM2885
s ELECTRICAL CHARACTERISTICS
NJM2885_3.0V Output Voltage vs. Input Voltage
@:Ta=25 oC Co=2.2uF(Ceramic) 3.1
3
3.2
4
NJM2885_3.0V Output Voltage vs. Output Current
@:Ta=25o C VIN=4.0V Co=2.2uF(Ceramic)
3.5
Output Voltage : Vo(V)
Io=0A 3
Output Voltage : Vo(V)
3.3 3.4
2.5
2
2.9 Io=100mA
1.5
1
2.8 Io=300mA
0.5
2.7 2.7
0
2.8
2.9
3
3.1
3.2
0
200
400
600
800
1000
Input Voltage : VIN(V)
Output Current : Io(mA)
NJM2885_3.0V Ground Pin Current v.s. Output Current
30 0.35 @:Ta=25o C VIN=4.0V Co=2.2uF(Ceramic)
o
NJM2885_3.0V Dropout Voltage vs. Output Current
@:Ta=25 C Co=2.2uF(Ceramic)
25
0.3
Ground Pin Current : IGND (mA)
20
Dropout Voltage:dVI-O (V)
0.25
0.2
15
0.15
10
0.1
5
0.05
0 0 100 200 300 400 500 600 700
0 0 100 200 300 400 500 600 700
Output Current : IO(mA)
Output Current:Io(mA)
100
NJM2885_3.0V Output Noise Voltage vs. Output Current
@:Ta=25 oC VIN=4.0V LPF:80kHz
NJM2885_3.0V Equivalent Serise Resistance vs. Output Current
100 @:Ta=25 C VIN=4.0V Co=2.2uF(Ceramic)
o
Equivalent Serise Resistance : ESR()
Output Noise Voltage : Vn(uVrms)
80
10
Co=2.2uF(Ceramic) 60
1
STABLE REGION
40
20
Co=4.7uF(Ceramic)
0.1
0 0.001
0.01
0.1
1
10
100
1000
0.02 0.001
0.01
0.1
1
10
100
10
3
Output Current : Io(mA)
Output Current : Io(mA)
NJM2885
s ELECTRICAL CHARACTERISTICS
NJM2885_3.0V Ripple Rejection Ratio v.s. Frequency
100 Io=0mA
100
NJM2885_3.0V Ripple Rejection vs. Output Current
90
90 f=1kHz
Ripple Rejection Ratio : RR (dB)
Ripple Rejection : RR (dB)
80
80
70 Io=30mA Io=10mA
70 f=10kHz 60
60
50
50
40 @:Ta=25 C VIN=4.0V ein=200mVrms Co=2.2uF(Ceramic) 10 100 1k 10k 100k
o
40 @:Ta=25 C VIN=4.0V ein=200mVrms Co=2.2uF(Ceramic) 0.01 0.1 1 10 100 1000
o
30
30
20
20 0.001
Frequency : f (Hz)
Output Current : Io(mA)
0.4
NJM2885_3.0V Dropout Voltage vs. Temperature
NJM2885_3.0V Quiescent Current v.s. Input Voltage
300 @:VIN=4V Output is open. Co=2.2uF(Ceramic) 250
0.35
0.3
Quiescent Current : IQ (uA)
@:Io=300mA Co=2.2uF(Ceramic) -50 0 50 100
o
Dropout Voltage : dV (V)
I-O
200
0.25
0.2
150
0.15
100
0.1
50
0.05
0 150
0 -50 0 50 100
o
150
Temperature :Ta [ C]
Temperature :Ta [ C]
NJM2885_3.0V Output Voltage v.s. Temperature
4
3.5
3
Output Voltage :Vo [V]
2.5
2
1.5
1
0.5
@:VIN=4.0V Io=30mA CL=2.2uF(Ceramic) -50 0 50 100
o
0 150 200
Temperature :Ta [ C]
NJM2885
[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.

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