Datasheet > CS8121

CS8121

更新时间： 2022-11-26 12:51:54

品牌	Logo	应用领域
樱桃 - CHERRY		稳压器
页数	文件大小	规格书
8页	209K
描述
5V, 1A Linear Regulator with and ENABLE RESET

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CS8121 数据手册

CS8121

5V, 1A Linear Regulator

with

and

RESET

ENABLE

Description

Features

The CS8121 is a 5V, 1A precision linear

5V ± 4% Output Voltage

■

RESET

signal

250µA.

sends a

regulator with two microprocessor

compatible control functions and pro-

tection circuitry included on chip. The

composite NPN-PNP output pass tran-

sistor assures a lower dropout voltage

(1.2V @ 1A) without requiring exces-

sive supply current (4mA).

when the IC is powering up or when-

ever the output voltage falls out of reg-

■ Low Dropout Voltage

(1.2V @ 1A)

RESET

ulation. The

signal is valid

■ Low Quiescent Current

down to V_OUT= 1V.

(4mA @ I

= 1A)

OUT

The CS8121 design optimizes supply

rejection by switching the internal

bandgap reference from the supply

input to the regulator output as soon as

the nominal output voltage is achieved.

Additional on chip filtering enhances

rejection of high frequency transients

on all external leads.

■ µP Compatible Control

Functions

The CS8121Õs two logic control func-

tions make this regulator well suited to

applications requiring microprocessor-

based control at the board or module

RESET

ENABLE

■ Low Current Sleep Mode

I_Q= 250µA

ENABLE

level.

stage. A high voltage (>2.9V) on

ENABLE

controls the output

■ Fault Protection

Thermal Shutdown

Short Circuit

The CS8121 is fault protected against

short circuit, over voltage and thermal

runaway conditions.

the

lead turns off the regula-

torÕs pass transistor and sends the IC

into Sleep mode where it draws only

60V Peak Transient

Voltage

Package Options

Block Diagram

5 Lead TO-220

Overmolded

5 Lead TO-220

V_OUT

V_IN

Over

Voltage

5 Lead

TO-220

Shutdown

V_IN

ENABLE

Output

Current

Limit

ENABLE

V_OUT(SENSE)

Comparator

ENABLE

Bandgap

Supply

Gnd

Error

Amplifier

RESET

V_OUT

REF

Thermal

Shutdown

V_IN

TO V_OUT

7 Lead D²PAK

Bandgap

Reference

ENABLE

Gnd

RESET

Comparator

RESET

Gnd

V_OUT

V_OUT(SENSE)

Cherry Semiconductor Corporation

2000 South County Trail, East Greenwich, RI 02818

Tel: (401)885-3600 Fax: (401)885-5786

Email: info@cherry-semi.com

Web Site: www.cherry-semi.com

Rev. 5/4/99

Company

12 3 4 5 6 7 8

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