Features

Control

Output

Gnd

Gnd

Gnd

Gnd

Duty cycle

during

short circuit

Overtemp

Shutdown

short circuit

detect

open circuit

detect

Drive

& Bias

+

+

-

-

Fault

33V

s

Fault Detection

Open Circuit

Short Circuit

Overtemperature

s

On-Chip Flyback

Protection

s

Low Standby Current

Package Options

Single Relay Driver IC

CS1107

Description

This ASIC provides up to 350mA of

drive current for driving a relay.

On-chip diagnostic features include

open and short circuit detection in

the on state, duty cycle current limit

control, and thermal shutdown.

Faults are reported on the

lead.

is an active-low output.

An on-chip zener provides protec-

tion from flyback pulses from the

relay. Internal pull-down circuitry

is provided to ensure the output

pin turns off when the Control pin

is floating.

Fault

Fault

Block Diagram

Absolute Maximum Ratings

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65ûC to 150ûC

, Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 6V

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

Peak Transient Voltage (output off mode, output pin only)

Lead Temperature Soldering

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

Fault

Gnd

Gnd

Control

Gnd

Gnd

Fault

8 Lead SO

(internally fused leads)

1

A

Company

¨

Rev. 1/29/99

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