CS452/453
CS452/453
2.4A/4.4A Injector Solenoid Driver
Description
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.
Features
s
Microprocessor
Compatible Inputs
s
On-Chip Power Device
2.4A Peak, Typical CS-452
4.4A Peak, Typical CS453
s
Low Thermal Resistance
To Grounded Tab
s
60V Peak Transient
Voltage
s
Low Saturation Voltage
s
Operates Over a 4.5V to
24V Battery Range
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....................................................-40¡C to +150¡C
Operating Temperature Range (Tab Temperature) ..............-40¡C to +125¡C
Storage Temperature Range .....................................................-65¡C to +150¡C
Lead Temperature Soldering
Wave Solder (through hole styles only)...10 sec. max, 260¡C peak
Package Options
Typical Application Diagram
5 Lead TO-220
Tab (Gnd)
19kW
300W
V
BAT
4.5V to 24V
(60V Transient)
V
CC
I
OUT
OUT
Injector
V
IN
V
IN
CS452/453
CONTROL
1kW
Gnd
40V
Z
(max)
1
1
2
3
4
5
V
IN
CONTROL
Gnd
OUT
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
Rev. 12/18/97
1
A
¨
Company
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
