CS1108 Datasheet, PDF (1/4 Pages) Cherry Semiconductor Corporation – Single Lamp Driver IC

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.
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
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
Block Diagram
V_CC
VCC(SENSE)
Control
Fault
ISOURCE
Drive
& Bias
Duty cycle
during
short circuit
Overtemp
Shutdown
+
short circuit
-
detect
-
open circuit
+
detect
Output
Package Options
8 Lead SO
(internally fused leads)
Output 1
Gnd
V_CC
Gnd
Fault
Gnd
Control
Gnd
Gnd Gnd Gnd Gnd
Rev. 12/28/98
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: [phone] Fax: [phone]
Email: [e-mail]
Web Site: www.cherry-semi.com
1
A
Company
¨