SC1453-2.8ISKTR datasheet(1/5 Pages) SEMTECH

Part #	SC1453-2.8ISKTR

Description	150mA Ultra Low Dropout Regulator with Low Noise Bypass

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Manufacturer	SEMTECH [Semtech Corporation]

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SC1453

150mA Ultra Low Dropout

Regulator with Low Noise Bypass

Features

Revision 2, December 2000

PRELIMINARY

Description

The SC1453 is a low dropout linear regulator that oper-

ates from a +2.5V to +6.5V input range and delivers up

to 150mA. A PMOS pass transistor allows the low 75µA

supply current to remain independent of load, making

these devices ideal for battery operated portable

equipment such as cellular phones, cordless phones and

personal digital assistants.

The SC1453 has a bandgap reference bypass pin for

very low noise operation - a 10nF (typ.) capacitor is

connected between this pin and ground. Other features

include low powered shutdown, short circuit protection,

thermal shutdown protection and reverse battery

protection. The SC1453 comes in the tiny 5 lead SOT-23

package.

u Battery Powered Systems

u Cellular Telephones

u Cordless Telephones

u Personal Digital Assistants

u Portable Instrumentation

u Modems

u PCMCIA cards

u 2982/5205 compatible pinout

u Guaranteed 150 mA output current

u Very small external components - designed to work

with ceramic capacitors

u Low 25µV

RMS output noise

u Very low supply current

u Thermal overload protection

u Reverse battery protection

u Low power shutdown

u Full industrial temperature range

u Surface mount packaging (5 pin SOT-23)

VIN

VOUT

C3

1uF

C1

1uF

U1

SC1453

1

2

3

4

5

IN

GND

EN

BYP

OUT

C2

10nF

Applications

Typical Application Circuit

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SC1453-2.8ISKTR Datasheet(PDF) 1 Page - Semtech Corporation

SC1453-2.8ISKTR Datasheet(HTML) 1 Page - Semtech Corporation

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