CS290/291
CS290/291
Ignition Controller
Description
The CS290/291 are integrated cir-
cuits to be used in the automotive
ignition system. The application
diagram shown below highlights
the CS290. The CS291 is identical
with the differential input replaced
by a single-ended input. The part is
capable of withstanding 90V load
dump transients in the circuit
shown below. The part is also
reverse battery protected.
Features
s
40mA Driver
s
Stall Timing
s
Output Current Control
s
Output Clamp
s
Overvoltage Shutdown
Absolute Maximum Ratings
Power supply voltage, V
BAT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−0.3V to 22V
Peak Transient Voltage (Load Dump 76V @ 14V V
BAT
) . . . . . . . . . . . . . . . .90V
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−55°C to 165°C
Operating Junction Temperature, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150°C
Lead Temperature Soldering
Wave Solder (through hole styles only) . . . . . . .10 sec. max, 260°C peak
Reflow (SMD styles only) . . . . . . .60 sec. max above 183°C, 230°C peak
Package Options
14 Lead PDIP
Gnd
MB
AC
1
BI
CS
NC
OUT
CVS
D
V
CC
Application Diagram
25/75
V
IN+
V
IN−
Start
V
BAT
330
27k
1k
16 Lead SO Wide
55
CS290
18V
Ignition
Coil
NC
MB
AC
25/75
V
IN+
1
NC
BI
CS
NC
OUT
CVS
D
V
CC
0.1µF
V
CC
V
IN+
V
IN−
5k
IN+
IN−
25/75
AC
MB
C
RUN
0.1µF
3.2M
(optional)
Start
D
CVS
16k
Gnd
V
IN−
Start
4k
5k
CS290
OUT
CS
200
CS291
NC
NC
MB
AC
1
NC
BI
CS
TEST
OUT
CVS
D
V
CC
Gnd
BI
C
STALL
0.1µF
200
25/75
Gnd
C
ADAPTIVE
0.1µF
15.3k
56
Adjust for 6.5A (max)
Coil Current
0.05
V
IN−
Start
Consult Factory for Flip Chip
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. 3/8/99
1
A
®
Company
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
