Features

Control

Output

Gnd

Gnd

Gnd

Gnd

Duty cycle

during

short circuit

Overtemp

Shutdown

short circuit

detect

open circuit

detect

Drive

& Bias

+

+

-

-

Fault

s

Fault Detection

Open Circuit

Short Circuit

Over Temperature

s

s

Low Standby Current

Package Options

Single Lamp Driver IC

CS1108

Description

This ASIC provides up to 350mA of

drive current for powering bulbs.

The typical application for this part

is for use in airbag systems using a

type 194 bulb. On chip diagnostics

provide open circuit and short cir-

cuit detection in the output on

mode. In addition, the output

driver will turn on (sink current)

is an

active-low output which reports in

the output-on mode. Internal pull-

up circuitry is provided to ensure

the output pin turns on when the

Control pin is floating.

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

Rev. 12/28/98

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

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