Cherry Semiconductor CS291N14, CS291DWR16, CS291DW16, CS290N14, CS290DWR16 Datasheet

Features

■ 40mA Driver

■ Stall Timing

■ Output Current Control

■ Output Clamp

■ Overvoltage Shutdown

Package Options

CS290/291

Ignition Controller

CS290/291

Description

The CS290/291 are integrated cir­cuits 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.

Application Diagram

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

Gnd

MB

AC

25/75

V

IN+

V

IN−

Start V

CC

D

CVS

OUT

NC

CS

BI

14 Lead PDIP

1

16 Lead SO Wide

A Company

®

Rev. 3/8/99

Gnd

MB
AC

25/75

V

IN+

V

IN−

Start V

CC

D

CVS

OUT

NC

CS

BI

NC NC

Gnd

MB
AC

25/75

V

IN−

Start V

CC

D

CVS

OUT

TEST

CS

BI

NC NC
NC

Consult Factory for Flip Chip

CS290

CS291

Cherry Semiconductor Corporation

2000 South County Trail, East Greenwich, RI 02818

Tel: [phone] Fax: [phone]

Email: [e-mail]

Web Site: www.cherry-semi.com

V

BAT

1k

1

V

V

C

RUN

0.1µF

C

ADAPTIVE

0.1µF

IN+

IN−

0.1µF

5k

5k

3.2M
(optional)

330 27k

V

Start D

CC

IN+
IN−

CS290

25/75
AC

MB Gnd BI

15.3k

55

CVS

OUT

CS

C

STALL

0.1µF

18V

16k

200

200

56

4k

Adjust for 6.5A (max)

Coil Current

Ignition
Coil

0.05

1

1

■ Input

Positive Threshold 66 %V

BAT

Negative Threshold V

BAT

=16V 29 %V

BAT

V

BAT

= 6V 29

Hysteresis 9%V

BAT

Input Impedance Input = 100µA 70 325 kΩ

VCCNegative Edge Filter V

BAT

= 16V 18 1100 µs

V

BAT

= 6V 4 1100

■ Output Stage

Negative Edge Delay V

BAT

= 6V 1.1 3.1 ms

(Start Mode)

Positive Edge Delay V

BAT

= 5V 1.06 1.80 ms

(Start Mode)

Delay Time V

BAT

= 14V 0 16 µs

(Start High to Output Low)

Output Current V

BAT

= 6V 40 65 mA

Output SOA V

BAT

= 22V 40 65 mA

Output Leakage V

BAT

= 18V 0 100 uA

Output Clamp Voltage Output = 10mA 13.7 17 V

Output Clamp Impedance Output = 10mA 10 80 Ω
(Refers to Collector Sense Voltage pin)

High Frequency On Time V

BAT

= 14V 70 80 %

■ General

I

CC

V

BAT

= 6V 1.4 4.6 mA

V

BAT

= 16V 5 19

AC Gain V

BAT

= 14V 0.8 1.2 V/V

Adaptive Cap Gain

VCSRegulation V

BAT

= 6V 140 210 mV

High Voltage Shutdown 24.3 31 V

■ Stall

V

STALL

Soft Shutdown Voltage VCS= 6V 0 11 mV

Soft Shutdown Frequency V

BAT

= 14V 1.0 2.6 Hz

Soft Shutdown Time V

BAT

= 6V 13.1 27 ms

Stall to Spark Output Delay V

BAT

= 14V 4.5 8.9 ms

Battery Interrupt Time V

BAT

= 14V 25 750 ms

Battery Interrupt Recovery Time (200 Hz) 0 800 ms

■ Dwell

Dwell @ 10Hz V

BAT

= 5V 46 54 %

(Start Mode)

Start to Output Disable Time V

BAT

= 14V 65 135 ms

Excess Dwell @ 20Hz V

BAT

= 14V 14 20.8 %

(Run Mode)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

2

Electrical Characteristics: 6V < VB< 16V, −30°C < TA< 125°C

CS290/291