POWER MANAGEMENT

1

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SC1461

Features

Applications

Revision 1, December 2000

Typical Application Circuit

Description

The SC1461 is a versatile charge pump designed for use

in battery operated power supply applications. A simple,

low current boost circuit can be implemented without

costly inductors or capacitors. Internal MOSFETs and

control circuitry eliminate the need for costly board space

and design time. The small device footprint allows for

compact circuit design.

that require up to 8mA of output current. Three modes

of output voltage can be programmed via the ADJ pin.

Modes include:

V

V

and the adjustable mode where an external resistor

divider determines the output voltage.

The SC1461 is packaged in a 5 lead SOT-23 package.

1.32 * V

(-40°C to 85°C)



R2

47nF

Cout

47nF

Cout

Vin = 3.3V

47nF

Cout

0.22uF

Cin

Vin = 2.5V

0.22uF

Cin



SC1461

Vin

Vo

SC1461

R1



Vin

Vo = 5.0V

Vo = 3.3V

0.22uF

Cin

SC1461













+

+

×

×

=

2

R

1

R

1

R

1

Vin

03

.

1

Vo