SC1460

© 1999 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

5mA CAPLESS

PRELIMINARY - July 6, 1999

1

BLOCK DIAGRAM

PIN CONFIGURATION

3 Lead SOT-23

DESCRIPTION

The SC1460 is a versatile charge pump designed for

use in battery operated power supply applications re-

quiring up to 5mA. It enables a simple low current

boost circuit to be implemented without the costly in-

ductors or capacitors associated with regular switching

circuits. Features include internal MOSFETs, control

circuitry and charge pump capacitor, requiring only two

external capacitors for a total solution. With a very

high operating frequency (8MHz free running at 2.5V in

typically), the SC1460 does not require large input or

output capacitors, and therefore uses very little board

space. Two versions of the SC1460 are available: the

-3.3 produces a regulated 3.3V output from 2.5V in,

and the -5.0 produces a regulated 5V output from 3.3V

in. It is supplied in the popular 3 lead, SOT-23 pack-

age.

FEATURES

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

ORDERING INFORMATION

DEVICE

(1)(2)

PACKAGE

SC1460CSK-X.X

SOT-23

Notes:

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

ages are: 3.3V and 5.0V.

(2) Add suffix ‘TR’ for tape and reel.

ABSOLUTE MAXIMUM RATINGS

Parameter

Symbol

Maximum

Units

Supply Voltage

VIN

-0.3 to + 4

V

Output Voltage

VO

-0.3 to +6.0

V

Thermal Resistance

Junction to Ambient

θ

JA

410

°C/W

Operating Temperature

T

A

0 to +70

°C

Temperature Range

T

J

0 to 125

°C

Storage Temperature

T

STG

-65 to +150

°C

Lead Temperature

(Soldering) 10 seconds

T

L

300

°C

APPLICATIONS

(Top View)