CS290/291
Ignition Controller
Features
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.
ꢀ 40mA Driver
ꢀ Stall Timing
ꢀ Output Current Control
ꢀ Output Clamp
ꢀ Overvoltage Shutdown
Absolute Maximum Ratings
Power supply voltage, VBAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−0.3V to 22V
Peak Transient Voltage (Load Dump 76V @ 14V VBAT) . . . . . . . . . . . . . . . .90V
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−55°C to 165°C
Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150°C
Lead Temperature Soldering
Package Options
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
14 Lead PDIP
1
Gnd
MB
BI
CS
NC
OUT
CVS
D
AC
25/75
VIN+
VIN−
Start
Application Diagram
VCC
VBAT
1k
16 Lead SO Wide
330
27k
55
1
CS290
NC
MB
NC
BI
0.1µF
18V
AC
CS
NC
OUT
CVS
D
Ignition
Coil
25/75
VIN+
Gnd
VIN−
Start
VCC
Start
D
16k
5k
5k
VIN+
VIN−
VCC
IN+
CVS
4k
IN−
25/75
CS290
1
CS291
NC
NC
NC
OUT
CS
BI
200
AC
MB
MB
CS
AC
TEST
OUT
CVS
D
Gnd
BI
200
25/75
Gnd
VIN−
Start
CRUN
3.2M
(optional)
CSTALL
0.1µF
0.1µF
CADAPTIVE
15.3k
56
0.05
Adjust for 6.5A (max)
Coil Current
0.1µF
VCC
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