LX8940IP datasheet(2/4 Pages) MICROSEMI

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5V L OW D ROPOUT R EGULA T O R

LX8940

PRODUCT DA T ABOOK 1996/1997

Rev. 1.3

3/99

P RODUCTION D ATA S HEET

ABSOLUTE MAXIMUM RATINGS

(Note 1)

Input Voltage (V

IN) .......................................................................................... -15V to 26V

Operating Junction Temperature

Plastic (P Package) ................................................................................................ 150°C

Storage Temperature Range ...................................................................... -65°C to 150°C

Lead Temperature (Soldering, 10 seconds) ............................................................. 300°C

PACKAGE PIN OUTS

P PACKAGE

(Top View)

Note 1. Exceeding these ratings could cause damage to the device. All voltages are with respect

to Ground. Currents are positive into, negative out of the specified terminal. Pin

numbers refer to DIL packages only.

P PACKAGE:

THERMAL RESISTANCE-JUNCTION TO TAB,

θθθθθ

3.0°C/W

THERMAL RESISTANCE-JUNCTION TO AMBIENT,

θθθθθ

60°C/W

Junction Temperature Calculation: T

J = TA + (PD x θJA).

The

JA numbers are guidelines for the thermal performance of the device/pc-board system.

All of the above assume no ambient airflow.

THERMAL DATA

BLOCK DIAGRAM

* Required if regulator is located far from power supply filter.

10µF

INPUT VOLTAGE

LX8940

1 (INPUT)

3 (OUTPUT)

2 (GND)

C1*

0.1µF

OVERVOLTAGE

THERMAL

SHUTDOWN

REGULATOR

BIAS

1.23V

REFERENCE

OUTPUT VOLTAGE

Tab is GROUND

OUTPUT

GND

INPUT

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