Datasheet > SC1566IT-X.XT

SC1566IT-X.XT

更新时间： 2024-11-11 03:06:07

品牌	Logo	应用领域
商升特 - SEMTECH		稳压器
页数	文件大小	规格书
12页	255K
描述
Very Low Dropout 3.0 Amp Regulator With Enable

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SC1566IT-X.XT 数据手册

SC1566

Very Low Dropout

3.0 Amp Regulator With Enable

POWER MANAGEMENT

Description

Features

The SC1566 is a high performance positive voltage

regulator designed for use in applications requiring very

low dropout voltage at up to 3 Amps. Since it has

superior dropout characteristics compared to regular

LDOs, it can be used to supply 2.5V on motherboards or

2.8V on peripheral cards from the 3.3V supply thus

allowing heat sink size reduction or elimination.

Additionally, the five pin versions of SC1566 have an

enable pin, to further reduce power dissipation while shut

down. The SC1566 provides excellent regulation over

variations in line, load and temperature.

350mV dropout @ 3A

Adjustable output from 1.2V to 4.8V

2.5V and 1.8V options (5 pin parts also adjustable

externally using resistors)

Over current and over temperature protection

Enable pin

10µA quiescent current in shutdown

Low reverse leakage (output to input)

Full industrial temperature range

TO-220 and TO-263 packages

Applications

The SC1566 is available as three terminal fixed output

voltage and five terminal fixed or adjustable output

voltage devices with enable. Two package options are

available: TO-263 and TO-220.

Battery powered systems

Motherboards and notebook computers

Peripheral cards

Network cards

Set top boxes

Medical equipment

Typical Application Circuits⁽¹⁾⁽²⁾

SC1566I5T-2.5

VIN

VO = See equation below

ENABLE

ADJ

GND

1.200(R1+ R2)

VO=

Volts

SC1566I5T-2.5

VIN

VO = 2.5V

VIN

ENABLE

ADJ

GND

SC1566IT-1.8

VIN

VO = 1.8V

VIN

GND

Notes:

(1) Maximum VO setpoint for 1.8V parts = 5.4V

(2) This device is designed to operate with

ceramic input and output capacitors

Revision: April 27, 2005

www.semtech.com

12 3 4 5 6 7...12

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