JRC NJU7777F4-03, NJU7777F4-05, NJU7777F4-15, NJU7777F4-18, NJU7777F4-21 Schematics

3

412

L

LOW DROPOUT VOL TAGE REGULA T OR

 GENERAL DESCRIPTION  PACKAGE OUTLINE

The NJU7777 is a 150mA output low dropout voltage

regulator with ON/OFF control.

Advanced CMOS technology achieves high ripple rejection

and low quiescent current.

Small packaging and 1µF small decoupling capacitor make the

NJU7777 suitable for space conscious applications.

 FEATURES

 High Ripple Rejection 65dB typ. (f=1kHz,Vo=3.0V version)
 Low quiescent Current Iq=18µA (Io=0mA)
 Output Current Io(max.)=150mA
 High Precision Output Vo±1.0%
 Output capacitor with 1.0µF ceramic capacitor (Vo

≥2.1V version)

 Low Dropout Voltage 0.13V typ. (Io=100mA,Vo=3.0V)
 ON/OFF Control
 Internal Short Circuit Current Limit
 Internal Thermal Overload Protection
 CMOS Technology
 Package Outline SC-82AB

 PIN CONFIGURATION

NJU7777F4

1.CONTRO

2.GND

3.V

OUT

4.V

IN

 EQUIVALENT CIRCUIT

NJU7777F4

NJU7777

Ver.2008-01-24

VDD

CONTROL

VSS

Output

Control

V

ref

Thermal

Protection

Current

Limit

V OUT

-

-

NJU7777

 OUTPUT VOLTAGE RANK LIST

Device Name V
NJU7777F4-15 1.5V NJU7777F4-33 3.3V
NJU7777F4-18 1.8V NJU7777F4-05 5.0V
NJU7777F4-21 2.1V
NJU7777F4-24 2.4V
NJU7777F4-03 3.0V

 ABSOLUTE MAXIMUM RATINGS (Ta=25°C)

PARAMETER SYMBOL RATINGS UNIT

Input Voltage VIN +9 V
Control Voltage V

Power Dissipation PD 250(*2) mW
Operating Temperature Topr

Storage Temperature Tstg

Device Name V

OUT

+9(*1) V

CONT

OUT

−40 ∼ +85 °C

−40 ∼ +125 °C

(*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
V

=+2.3 ∼ +8V (In case of Vo<2.1V version)

IN

 ELECTRICAL CHARACTERISTICS (V

=Vo+1V, CIN=0.1µF, Co=1.0µF(Co=2.2µF: Vo≤2.0V), Ta=25°C)

IN

PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT

Output Voltage Vo Io=30mA -1.0%
Input Voltage VIN 2.3
Quiescent Current IQ Io=0mA, V

Quiescent Current
at Control OFF

Output Current Io

Short Current Limit I

Line Regulation

V

I

Q(OFF)

Vo=0V

LIM

∆Vo/∆V

IN

=0V

CONT

Vo-0.1V (Vo≤2.0V Version)
Vo-0.3V (Vo≥2.1V Version)

=Vo+1V ∼ Vo+6.0V (Vo<2.0V Version)

V

IN

V

=Vo+1V ∼ 8.0V (Vo≥2.0V Version),

IN

CONT=VIN

−

−

150

−

− −

+1.0% V

−

−

18 35

0.1 1.0

− −

40

0.20 %/V

Io=30mA

Load Regulation

Dropout Voltage(*3)

∆Vo/∆Io Io=0 ∼ 100mA

∆V

I-O

Ripple Rejection RR

Average Temperature
Coefficient of Output Voltage

∆Vo/∆Ta Ta = 0 ∼ 85°C, Io=10mA

Output Noise Voltage VNO

Pull-down Resistance R
Control Voltage for ON-state V
Control Voltage for OFF-state V

CONT

CONT(ON)

CONT(OFF)

− −

2.1V≤Vo≤2.4V

Io=100mA

2.5V≤Vo≤2.7V

2.8V≤Vo≤3.3V

3.4V≤Vo≤5.0V

ein=200mVrms,f=1kHz,Io=10mA,
Vo=3.0V Version

f=10Hz ∼ 80kHz,Io=0mA,Vo=3.0V Version

−

−

−

−

−

−

−

0.17 0.22 V

0.15 0.20 V

0.13 0.18 V

0.11 0.16 V

65

±100

75

2 5 10

1.6

− −

− −

0.03 %/mA

(*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.

8 V

µA

µA

mA

−

−

−

−

mA

dB

ppm/°C

µVrms

MΩ

V

0.3 V

-

-

Ver.2008-01-24

 TEST CIRCUIT

P

Di

i

i

P

(

W)

NJU7777

VIN

A

IIN

0.1µF

A

I

CONT

V

IN

NJU7777

CONTROL

GND

V

V

CONT

*4 Vo≤2.0V version: Co=2.2µF(ceramic)

 POWER DISSIPATION vs. AMBIENT TEMPERATURE

NJU7777F4 Power Dissipation

(Topr=-40〜+85℃,Tj=125℃)

500



V

OUT



I

*4

1.0µF

(ceramic)

V

V

OUT

OUT

Ver.2008-01-24

m

400

D

on

300

pat
ss

200

ower

100

0

-50 -25 0 25 50 75 100

On Board(114.3×76.2×1.6mm, FR-4)

Ambient Temperature Ta(℃)

-

-