SC1541 SEMTECH [Semtech Corporation], SC1541 Datasheet

SC1541

Manufacturer Part Number

SC1541

Description

1.0A Low Dropout Voltage Regulator with Enable

Manufacturer

SEMTECH [Semtech Corporation]

Datasheet

1.SC1541.pdf (6 pages)

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Download datasheet (169Kb)

The SC1541 is a high performance low dropout positive

voltage regulator designed for use in applications where

power management is critical, such as battery powered

systems.

Additionally, the SC1541 provides excellent regulation

over variations in line, load and temperature.

Outstanding features include low dropout performance

at rated current, fast transient response, internal

current limiting and thermal shutdown protection of the

output device. A very low quiescent current of 10µA in

shutdown mode reduces power dissipation.

The SC1541 is available with three different voltage

options as standard and two package options, SO-8 and

5-lead TO-263.

Notes:

(1) Input and output capacitors should be located close to the device.

(2) Connect all pins to PCB (SO-8 package) for optimal thermal characteristics.

(3) Increasing the output capacitor value will improve the overall transient response.

(4) The device is enabled when V

than V

Revision: February 11, 2004

POWER MANAGEMENT

Description

Typical Application Circuit

. A CMOS signal referenced to V

ENABLE SIGNAL

= V

, and shut down when EN is pulled to ground. EN should not be taken higher

would be ideal for switching the SC1541 on and off.

10uF

Tantalum

Features

Applications

Low dropout performance, 1.3V max

Full current rating over line and temperature

Fast transient response

+2% total output regulation over line, load

and temperature

10µA max. quiescent current in shutdown

Three fixed output voltages

Line regulation 0.2% max.

Load regulation 0.4% max.

SO-8 and TO-263 packages

Low voltage microcontrollers

Switching power supply post-regulation

Instantly available circuits

Motherboards

Battery operated equipment

GND

SC1541

OUT

1.0A Low Dropout Voltage

Regulator with Enable

10uF min.

Tantalum

OUT

www.semtech.com

SC1541

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