© 2000 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

150mA ULTRA LOW DROPOUT

MICROPOWER LINEAR REGULATOR

SC112

PRELIMINARY - July 25, 2000

1

DESCRIPTION

The SC112 is a 150mA ultra low dropout linear

regulator with a built in CMOS/TTL logic level enable,

designed specifically for battery powered applications

where low quiescent current and low dropout are

critical for battery longevity.

The SC112 uses a Semtech proprietary internal PNP

device for the pass element, providing a low dropout

voltage of 130mV at a load of 60mA.

The output noise is reduced to 30µV (typical) by

placing a very low leakage 10nF capacitor on pin 3

(noise bypass).

Each device contains a bandgap reference, error

amplifier, PNP pass element, thermal and current

limiting circuitry and resistor divider network for setting

output voltage.

The SC112 is packaged in a six lead SOT-23 surface

mount package for a very small footprint and it requires

only a 1µF capacitor on the output and a 0.01µF on the

bypass pin for a minimum number of external

components.

FEATURES

APPLICATIONS

TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com

DEVICE

(1)(2)

PACKAGE

SC112XXCSK.TR

6 pin SOT-23

ORDERING INFORMATION

Notes:

(1) Where XX denotes voltage options. Available volt-

ages are: 2.2V, 2.5V, 2.8V, 3.0V, 3.3V, 3.6V, 3.8V,

4.0V and 5.0V. Contact factory for additional voltage

options.

(2) Only available in tape and reel packaging. A reel

contains 3000 devices

TYPICAL APPLICATION CIRCUIT

VIN

VO

EN

U1

SC112

1

2

3

4

5

6

EN

GND

BYP

VO

GND

VIN

C1

10nF

C2

1uF

C3

1uF