LM1950T datasheet(1/6 Pages) NSC

No de pièce	LM1950T

Description	750 mA High Side Switch

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Fabricant	NSC [National Semiconductor (TI)]

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TLH11237

December 1991

LM1950 750 mA High Side Switch

General Description

The LM1950 is a high current high side (PNP) power switch

for driving ground referenced loads Intended for industrial

and automotive applications the LM1950 is guaranteed to

deliver 750 mA continuous load current (with typically 14

Amps peak) and can withstand supply voltage transients up

to a60V and b50V When switched OFF the quiescent

current drain from the input power supply is less than

100 mA which can allow continuous connection to a battery

power source

The LM1950 will drive all types of resistive or reactive loads

To obtain a rapid decay time of the energy in inductive

loads the output is internally protected but not clamped and

can swing below ground to at least 54V negative with re-

spect to the input power supply voltage

The ONOFF input can be driven with standard 5V TTL or

CMOS compatible logic levels independent of the VCC sup-

ply voltage used Built in protection features include short

circuit protection thermal shutdown over-voltage shutdown

to protect load circuits and protection against reverse polari-

ty input connections The LM1950 is available in a 5-lead

power TO-220 package and specified over a wide b40 Cto

125 C operating temperature range

Features

Y

750 mA continuous output drive current

Y

Less than 100 mA quiescent current in OFF state

Y

Low inputoutput voltage drop

Y

a

60V b50V transient protection

Y

Drives resistive or reactive loads

Y

Unclamped output for fast inductive decay tmies

Y

Reverse battery protected

Y

Short circuit proof

Y

Overvoltage shutdown to protect loads

Y

TTLCMOS compatible control input

Y

Thermal overload protection

Applications

Y

Relay driver

Y

SolenoidValve driver

Y

Lamp driver

Y

Load circuit switching

Y

Motor driver

Typical Application

TLH11237 – 1

Required for stability

Connection Diagram

TO 220 5 Lead

TLH11237 – 2

Front View

Order Number LM1950T

See NS Package Number T05A

C1995 National Semiconductor Corporation

RRD-B30M115Printed in U S A

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