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POWER MANAGEMENT

SC1592

Low Dropout High Performance

Adjustable Positive Voltage Regulator

Revision: January 27, 2004

Description

Features

Applications

Typical Application Circuit

The SC1592 is a 3A low dropout high performance

linear voltage regulator, that provides a low voltage, high

current output with a minimum of external components,

utilizing dual supply configuration.

The SC1592 offers a wide input voltage range from 1.25V

to 16V and is ideal for applications that need to convert

down to 0.8V.

Additionally, the SC1592 is fully protected with an exter-

nally programmable current limit, and thermal shutdown.

Also, there is an EN input which enables or shuts down

the device.

The SC1592 voltage regulator is available in 7-lead DDPAK

and SOIC-8L EDP packages.

Wide input range, V

V

3A Guaranteed Output Current

260mV (typ) @ 3A dropout voltage in dual supply

mode

1% Initial Accuracy

Adjustable output voltage, down to 0.8V

Programmable current limiting and thermal

shutdown

Fast transient response

Excellent line and load regulation

Power SO-8 and 7-lead DDPAK

Low voltage logic supplies

Microprocessor and chipset supplies

Split plane microprocessor supplies

Advanced graphics cards supplies

Sound cards and auxiliary power supplies

SMPS post regulator

C1

1uF

C2

10uF

R1

100

C3

47uF(cer)

R3

53

R2

66.5

+1.8V Vout

+3.3V Vcntl

+2.5V Vin

SC1592

CNTL

IN

OUT

SENSE

ILIM

EN

GND

TTL

.

typ

V

8

.

0

V

V

)

3

R

2

R

1

(

V

REF

REF

OUT

=

•

+

=