Datasheet > LM7909

LM7909

更新时间： 2024-09-08 11:36:59

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描述
3-Terminal Positive Voltage Regulator

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LM7909 数据手册

TIGER ELECTRONIC CO.,LTD

Product specification

3-Terminal Positive Voltage Regulator

LM7909

GENERAL DESCRIPTION

The LM7909 series of three terminal positive regulators are available in the TO-220 package and with

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

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

indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although

designed primarily as fixed voltage regulators, these devices can be used with external components to

obtain adjustable voltages and currents.

ABSOLUTE MAXIMUM RATINGS ( Ta = 25 ^OC)

Parameter

Input Voltage

Symbol

Typ

Unit

V_I

V_O

I_PK

-35

-9.0

-2.2

Output Voltage

Peak Current

Operating Temperature

Range

T_OPR

T_STG

0~125

^oC

TO-220

Storage Temperature Range

-65~150

( Ta = 25 ^OC)

ELECTRICAL CHARACTERISTICS

(Refer to test circuit, Io = -500mA, Vi = -15V, Ci= 2.2uF, Co=1.0uF unless otherwise specified)

Parameter

Output Voltage

Test Conditions

Symbol

Min

Typ

Max Unit

V_O

V_I= -12V to -23V,P_O≤15W

V_I= -12V to -25V

-8.6

—

-9.0

-10

-9.4

-180

Line Regulation (Note1)

Regline

V_I= -13V to -18V

—

-5

-90

I_O= -5.0mA to-1.5A

I_O=-250mA to -750mA

T_J=+25 ^oC

—

-12

-4

-180

-90

-6

Load Regulation (Note1)

Quiescent Current

Regload

I_Q

-3

I_O= -5mA to -1A

—

-0.5

Quiescent Current Change

ΔI_Q

V_I= -12V to -25V

—

-1.0

f = 120Hz, △V_i= 10V

Ripple Rejection

Dropout Voltage

Short Circuit Current

Peak Current

—

-2

—

V_DropI_O= -1A, T_J=+25 ^oC

I_SC

I_PK

V_I= -35V, T_A=+25 ^oC

T_J=+25 ^oC

-300

-2.2

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