Parameter

Symbol

Typ

Unit

Input Voltage

V

I

-35

V

Output Voltage

V

O

-8.0

V

Peak Current

I

PK

-2

.2

A

Operating Temperature

Range

T

OPR

0~125

Storage Temperature Rang

e

T

STG

-65~150

LM7908J

GENERAL DESCRIPTION

The LM7908J series of three-terminal negative regulators are available in TO-252 package and with

several fixed output voltages, making them useful in a wide range of applications. Each type employs

internal current limiting, thermal shutdown and safe operating area protection, making it essentially

indestructible.

Product specification

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(Refer to test circuit, Io = 500mA, Vi = -14V, Ci= 2.2uF, Co=1.0uF unless otherwise specified)

( Ta = 25 C)

O

( Ta = 25 C)

O

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Output Voltage

V

O

Tj = 25

℃ V

I

-7.76

-8.0

-8.24

V

Line Regulation

△V

o

Tj = 25

℃, Vi= -11V ~ -25V

—

—

-

160

mV

Tj = 25

℃，V

—

—

-

80

Load Regulation

△V

o

Tj = 25

℃, I

—

—

-

160

mV

Tj = 25

℃ I

—

—

-

80

Quiescent Current

I

Q

T

—

—

-

8.0

mA

Quiescent Current

Change

△IQ

Io = 5.0

ｍA ~ 1.0A

-0.5

mA

Tj = 25

℃, Vi= -11V ~ -25V

-1.3

mA

Output voltage drift

△Vo/△T Io = 5.0ｍA

-0.8

mV/

℃

Ripple Rejection

RR

f = 120Hz, V

56

73

—

dB

Dropout Voltage

V

Drop

I

—

-2

—

V

Output Resistance

R

O

f = 1KHz

—

0.017

—



Short Circuit Current

I

SC

V

—

-230

—

mA

Peak Current

I

PK

T

—

—

-2.2

A

3-Terminal 1A Negative Voltage Regulator

TO-252

1: GND

2: IN

3: OUT

TIGER ELECTRONIC CO.,LTD