CS1108
CS1108
Single Lamp Driver IC
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)
when V
CC
is low. Fault 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.
Features
s
Fault Detection
Open Circuit
Short Circuit
Over Temperature
s
V
CC
Sense: Output Turns
On with Loss of V
CC
s
Low Standby Current
Absolute Maximum Ratings
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65ûC to 150ûC
V
CC
, Fault , Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 6V
ESD Capability (Human Body Model). . . . . . . . . . . . . . . . . . . . . . . . . . . 2kV
Peak Transient Voltage (output off mode, output pin only)
(26V load Dump @ 14V V
BAT
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40V
Lead Temperature Soldering
Reflow (SMD styles only) . . . . 60 sec. max above 183¡C, 230¡C peak
Block Diagram
V
CC
V
CC(SENSE)
I
SOURCE
Output
Drive
& Bias
Control
Overtemp
Shutdown
Package Options
8 Lead SO
(internally fused leads)
Output
V
CC
1
Duty cycle
during
short circuit
Gnd
Gnd
Gnd
Gnd
+
Fault
-
-
+
short circuit
detect
open circuit
detect
Fault
Control
Gnd
Gnd
Gnd
Gnd
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. 12/28/98
1
A
¨
Company
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
