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TK70403

1.03 V REGULATOR WITH ON/OFF SWITCH

FEATURES

s

Low Input Voltage Operation (Single Battery Cell)

s

Internal PNP Transistor

s

Internal Shutdown Control

(Off Current, 0.1

碌

A max)

s

Low Dropout Voltage [30 mV (typ.) at 2 mA]

s

Miniature Package (SOT-26)

s

Very Low Noise

APPLICATIONS

s

Pagers

s

Personal Communication Equipment

s

Portable Consumer Equipment

s

Radio Control Systems

s

Single Battery Cell Systems

DESCRIPTION

TK70403 is a low dropout, linear regulator with a built-in

electronic switch. A pin for a bypass capacitor is provided,

which connects to the internal circuitry to lower the overall

output noise level.

An internal PNP pass-transistor is used in order to achieve

low dropout voltage (typically 30 mV at 2 mA load current).

This makes it possible to maintain a stable output voltage

as the battery voltage decreases, extending the useful

battery life.

The TK70403 is available in a miniature SOT-26 surface

mount package.

TK70403

VOUT

20P

NOISE

BYPASS

GND

CONTROL

GND

VIN

ORDERING INFORMATION

BLOCK DIAGRAM

TK70403MTB

VIN

VOUT

Tape/Reel Code

TAPE/REEL CODE

TB: Tape Left

CONTROL

BANDGAP

REFERENCE

GND

NOISE

BYPASS

January 1999 TOKO, Inc.

Page 1

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