
1
Features
CS452/453
V
BAT
4.5V to 24V
(60V Transient)
I
OUT
Injector
40V
Z
(max)
OUT
V
CC
300
W
Gnd
V
IN
CONTROL
1k
W
19k
W
V
IN
I
Microprocessor
Compatible Inputs
I
On-Chip Power Device
2.4A Peak, Typical CS-452
4.4A Peak, Typical CS453
I
Low Thermal Resistance
To Grounded Tab
I
60V Peak Transient
Voltage
I
Low Saturation Voltage
I
Operates Over a 4.5V to
24V Battery Range
Package Options
5 Lead TO-220
Tab (Gnd)
1
C
2.4A/4.4A Injector Solenoid Driver
Description
CS452/453
The CS452/453 is a monolithic inte-
grated circuit designed for medium
current solenoid driver applica-
tions. Its typical function is to sup-
ply full battery voltage to fuel injec-
tor(s) for rapid current rise, in order
to produce positive injector open-
ing.
When load current reaches a preset
level (2.4A for CS452, or 4.4A for
CS453), the injector driver reduces
the load current by a 4:1 ratio and
operates as a constant current
source. This condition holds the
injector open and reduces system
power dissipation.
Other solenoid or relay applications
can be equally well served by the
CS452/453. Two high impedance
inputs are provided which permit a
variety of control options and can
be driven by TTL or CMOS logic.
Typical Application Diagram
Absolute Maximum Ratings
Power Supply Voltage (V
CC
).........................................................................24V
V
IN
..........................................................................................................-6.0 to 24V
Control ..................................................................................................-6.0 to 24V
Peak Transient Voltage (46V Load Dump)..................................................60V
Internal Regulator Current.........................................................................50mA
Junction Temperature Range....................................................-40C to +150C
Operating Temperature Range (Tab Temperature)..............-40C to +125C
Storage Temperature Range.....................................................-65C to +150C
Lead Temperature Soldering
Wave Solder (through hole styles only)...10 sec. max, 260C peak
1 V
IN
2 CONTROL
3 Gnd
4 OUT
5 V
CC
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
¨
Rev. 12/18/97