1

Features

s

Two regulated outputs

12V ±5.0%; 400mA

5V ±2.0%; 200mA

s

Very low SLEEP mode cur-

rent drain 200nA

s

Fault Protection

Reverse Battery (-15V)

74V Load Dump

-100V Reverse Transient

Short Circuit

Thermal Shutdown

Package Options

TO-220 5 Lead

16 Lead SO Wide

(internally fused leads)

Tab (Gnd)

1

CS8161

Description

2

Gnd

1

ENABLE

+

-

Bandgap

Reference

+

-

+

-

Thermal

Shutdown

Over Voltage

Shutdown

Anti-saturation

and

Current Limit

Anti-saturation

and

Current Limit

Pre-Regulator

Block Diagram

Absolute Maximum Ratings

Input Voltage

Operating Range .....................................................................Ð15V to 26V

Overvoltage Protection.........................................................................74V

Internal Power Dissipation ..................................................Internally Limited

Junction Temperature Range.......................................................Ð40¡C +150¡C

Storage Temperature Range....................................................Ð65¡C to +150¡C

Lead Temperature Soldering

Wave Solder (through hole styles only)..........10 sec. max, 260¡C peak

Reflow (SMD styles only)...........60 sec. max above 183¡C, 230¡C peak

ESD (Human Body Model) ...........................................................................2kV

The CS8161 is a 12V/5V dual out-

put linear regulator. The 12V ± 5%

output sources 400mA and the 5V

±2.0% output sources 200mA.

The on board ENABLE function

controls the regulatorÕs two out-

puts. When the ENABLE pin is

low, the regulator is placed in

SLEEP mode. Both outputs are dis-

abled and the regulator draws only

200nA of quiescent current.

tected against overvoltage condi-

tions. Both outputs are protected

against short circuit and thermal

runaway conditions.

The CS8161 is packaged in a 5 lead

TOÐ220 with copper tab. The cop-

per tab can be connected to a heat

sink if necessary. It is also available

in a 16 lead SO wide package.

1

3 Gnd

4 ENABLE

2

NC

NC

NC

NC

Gnd

Gnd

Gnd

Gnd

Gnd

Gnd

ENABLE

1

12V, 5V Low Dropout Dual Regulator

with ENABLE

A

Company

¨

Rev. 4/5/99

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