CS1107
CS1107
Single Relay Driver IC
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 Fault
lead. Fault 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.
Features
s
Fault Detection
Open Circuit
Short Circuit
Overtemperature
s
On-Chip Flyback
Protection
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
Control
I
SOURCE
Output
33V
Drive
& Bias
Package Options
8 Lead SO
(internally fused leads)
Output
V
CC
1
Overtemp
Shutdown
Duty cycle
during
short circuit
+
Fault
-
-
+
short circuit
detect
open circuit
detect
Gnd
Gnd
Gnd
Gnd
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. 1/29/99
1
A
¨
Company
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
