CS1107
Single Relay Driver IC
This ASIC provides up to 350 mA 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 protection 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.
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8
Features
1
• Fault Detection
SO–8
DF SUFFIX
CASE 751
– Open Circuit
– Short Circuit
– Overtemperature
• On–Chip Flyback Protection
• Low Standby Current
• Internally Fused Leads in SO–8 Package
PIN CONNECTIONS AND
MARKING DIAGRAM
1
8
Output
GND
GND
GND
GND
V
CC
V
CC
Fault
Control
I
Output
SOURCE
Control
Drive &
Bias
33 V
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
Overtemp
Shutdown
Duty cycle
during short
circuit
ORDERING INFORMATION
+
–
Short Circuit
Detect
Device
Package
Shipping
Fault
CS1107EDF8
95 Units/Rail
SO–8
SO–8
–
+
Open Circuit
Detect
CS1107EDFR8
2500 Tape & Reel
GND GND GND
GND
Figure 1. Block Diagram
Semiconductor Components Industries, LLC, 2000
1
Publication Order Number:
December, 2000 – Rev. 4
CS1107/D