JRC NJU7777F4-03, NJU7777F4-05, NJU7777F4-15, NJU7777F4-18, NJU7777F4-21 Schematics
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NJU7777
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION |
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PACKAGE OUTLINE |
The NJU7777 is a 150mA output low dropout voltage |
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regulator with ON/OFF control. |
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Advanced CMOS technology achieves high ripple rejection |
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and low quiescent current. |
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Small packaging and 1µF small decoupling capacitor make the |
NJU7777F4 |
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NJU7777 suitable for space conscious applications. |
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FEATURES |
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High Ripple Rejection |
65dB typ. (f=1kHz,Vo=3.0V version) |
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Low quiescent Current |
Iq=18µA (Io=0mA) |
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Output Current |
Io(max.)=150mA |
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High Precision Output |
Vo±1.0% |
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Output capacitor with 1.0µF ceramic capacitor (Vo≥2.1V version) |
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Low Dropout Voltage |
0.13V typ. (Io=100mA,Vo=3.0V) |
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ON/OFF Control |
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Internal Short Circuit Current Limit |
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Internal Thermal Overload Protection |
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CMOS Technology |
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Package Outline |
SC-82AB |
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PIN CONFIGURATION
4 3 1.CONTROL 2.GND
3.VOUT
1 2 4.VIN NJU7777F4
EQUIVALENT CIRCUIT
VDD |
VOUT |
Thermal
Protection
Output
CONTROL Control
Vref |
Current |
Limit |
VSS 
Ver.2008-01-24 |
- 1 - |
NJU7777
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OUTPUT VOLTAGE RANK LIST |
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Device Name |
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VOUT |
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Device Name |
VOUT |
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NJU7777F4-15 |
1.5V |
NJU7777F4-33 |
3.3V |
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NJU7777F4-18 |
1.8V |
NJU7777F4-05 |
5.0V |
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NJU7777F4-21 |
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2.1V |
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NJU7777F4-24 |
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2.4V |
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NJU7777F4-03 |
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3.0V |
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ABSOLUTE MAXIMUM RATINGS |
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(Ta=25°C) |
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PARAMETER |
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SYMBOL |
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RATINGS |
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UNIT |
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Input Voltage |
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VIN |
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+9 |
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V |
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Control Voltage |
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VCONT |
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+9(*1) |
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V |
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Power Dissipation |
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PD |
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250(*2) |
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mW |
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Operating Temperature |
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Topr |
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−40 +85 |
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°C |
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Storage Temperature |
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Tstg |
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−40 +125 |
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°C |
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(*1) : When input voltage is less than +9V, the absolute maximum control voltage is equal to the input voltage. (*2) : Mounted on glass epoxy board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers)
Operating voltage
VIN=+2.3 +8V (In case of Vo<2.1V version)
ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.1µF, Co=1.0µF(Co=2.2µF: Vo≤2.0V), Ta=25°C)
PARAMETER |
SYMBOL |
TEST CONDITION |
MIN. |
TYP. |
MAX. |
UNIT |
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Output Voltage |
Vo |
Io=30mA |
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-1.0% |
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+1.0% |
V |
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Input Voltage |
VIN |
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2.3 |
− |
8 |
V |
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Quiescent Current |
IQ |
Io=0mA, VCONT=VIN |
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18 |
35 |
µA |
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Quiescent Current |
IQ(OFF) |
VCONT=0V |
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0.1 |
1.0 |
µA |
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at Control OFF |
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Output Current |
Io |
Vo-0.1V (Vo≤2.0V Version) |
150 |
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mA |
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Vo-0.3V (Vo≥2.1V Version) |
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Short Current Limit |
ILIM |
Vo=0V |
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− |
40 |
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mA |
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Line Regulation |
∆Vo/∆VIN |
VIN=Vo+1V Vo+6.0V (Vo<2.0V Version) |
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0.20 |
%/V |
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VIN=Vo+1V 8.0V (Vo≥2.0V Version), |
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Io=30mA |
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Load Regulation |
∆Vo/∆Io |
Io=0 100mA |
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− |
− |
0.03 |
%/mA |
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2.1V≤Vo≤2.4V |
− |
0.17 |
0.22 |
V |
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Dropout Voltage(*3) |
∆VI-O |
Io=100mA |
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2.5V≤Vo≤2.7V |
− |
0.15 |
0.20 |
V |
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2.8V≤Vo≤3.3V |
− |
0.13 |
0.18 |
V |
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3.4V≤Vo≤5.0V |
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0.11 |
0.16 |
V |
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Ripple Rejection |
RR |
ein=200mVrms,f=1kHz,Io=10mA, |
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65 |
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dB |
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Vo=3.0V Version |
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Average Temperature |
∆Vo/∆Ta |
Ta=0 85°C, Io=10mA |
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− |
±100 |
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ppm/°C |
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Coefficient of Output Voltage |
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Output Noise Voltage |
VNO |
f=10Hz 80kHz,Io=0mA,Vo=3.0V Version |
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75 |
− |
µVrms |
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Pull-down Resistance |
RCONT |
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2 |
5 |
10 |
MΩ |
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Control Voltage for ON-state |
VCONT(ON) |
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1.6 |
− |
− |
V |
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Control Voltage for OFF-state |
VCONT(OFF) |
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− |
− |
0.3 |
V |
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(*3): Except output voltage less than 2.1V.
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.
- 2 - |
Ver.2008-01-24 |
NJU7777
TEST CIRCUIT
A IIN |
VIN |
VOUT |
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VIN |
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NJU7777 |
IOUT V VOUT |
0.1µF |
1.0µF *4 |
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(ceramic) |
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A ICONT CONTROL
GND
V VCONT
*4 Vo≤2.0V version: Co=2.2µF(ceramic)
POWER DISSIPATION vs. AMBIENT TEMPERATURE
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NJU7777F4 Power Dissipation |
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(Topr=-40 +85 ,Tj=125 ) |
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500 |
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(mW) |
400 |
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D |
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on P |
300 |
On Board(114.3×76.2×1.6mm, FR-4) |
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pati |
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Dissi |
200 |
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Power |
100 |
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0 |
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-50 |
-25 |
0 |
25 |
50 |
75 |
100 |
Ambient Temperature Ta( )
Ver.2008-01-24 |
- 3 - |
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