1

Features

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Two Regulated Outputs

8V ±5%, 1A

5V ±5%, 250mA

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Independent ENABLE for

each Output

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Separate Sense Feedback

Lead for 8V Output

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<10µA Sleep Mode Current

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Fault Protection

Overvoltage Shutdown

+45V Peak Transient

Voltage

Short Circuit

Thermal Shutdown

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CMOS Compatible, Low-

Current ENABLE Inputs

Package Options

TO-220 7 Lead

Tab (Gnd)

8V/1A, 5V/250mA Dual Regulator with

Independent Output Enables and NoCapª

1

CS8371

Description

Pre-Regulator/

Bias Generator

Thermal

Shutdown

Trimmed Bandgap

Voltage Reference

ENABLE1

VCC

ENABLE2

Gnd

VOUT2

Sense

VOUT1

Overvoltage

Shutdown

Current Limit

VIA

Current Limit

1.2V

1.2V

Block Diagram

The CS8371 is a 8V/5V dual output

linear regulator. The 8V ±5% output

sources 1A, while the 5V ±5% out-

put sources 250mA. Each output is

controlled by its own ENABLE

lead. Setting the ENABLE input

high turns on the associated regula-

tor output. Holding both ENABLE

inputs low puts the IC into sleep

mode where current consumption

is less than 10µA.

The regulator is protected against

overvoltage, short-circuit and ther-

mal runaway conditions. The

device can withstand 45V load

dump transients making suitable

for use in automotive environ-

ments. CherryÕs proprietary

NoCapª solution is the first tech-

nology which allows the output to

be stable without the use of an

external capacitor.

The CS8371 is available in a 7 lead

TO-220 package with copper tab.

The tab can be connected to a

heatsink if necessary.

4 Gnd

5 Sense

Rev. 6/9/99

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

A

Company

¨

NoCap is a trademark of Cherry Semiconductor Corporation, and is patented.