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

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

3

CS290/291

Package Pin Description

PACKAGE PIN # PIN SYMBOL FUNCTION

16 lead SO wide

14 lead PDIP CS290 CS291

1 6 6 Gnd Signal Ground.

2 2 3 MB Master Bias. Sets up operating currents on the IC with exter-

nal resistor.

3 3 4 AC Adaptive Capacitor. Follows the 25/75 capacitor. Voltage

trip points control the Output for setting dwell.

4 4 5 25/75 Run Capacitor. Provides 25%/75% charge and discharge

current to an external capacitor for setting dwell.

55NCV

IN+

Input pin +.

677V

IN−

Input pin −.

7 8 8 Start Input pin to put device in the “start mode”.

899VCCSupply input voltage.

9 10 10 D Supply current to output pin.

10 11 11 CVS Collector Voltage Sense. Input for flyback detect.

11 12 12 OUT Output. Driver for external darlington.

12 1,13,16 1,2,16 NC No connection.

13 14 14 CS Current Sense. Feedback for max coil current.

14 15 15 BI Battery Int. Input for “stall mode” of operation

NC NC 13 Test Factory test pin. Pin should be grounded in customer

application.

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

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

■ Dwell: continued

Excess Dwell @ 200Hz V

BAT

= 14V 14 20.8 %

(Run Mode)

Reduced Dwell Threshold 16.6 21.0 V

Reduced Dwell Hysteresis 200 800 mV

Reduced Dwell V

BAT

= 20V 4.0 6.0 %

Typical Performance Characteristics

40

30

20

10

0

I

COIL (mA)

Time

Current
Limit

Spark Plug
Fires

Dwell Time

Dwell Time

Normal Run Mode 17.5%
High Voltage Mode 5.0%
Start Mode 50.0%

Timing Diagram, I

COIL

vs. Time

4

Rev. 3/8/99

© 1999 Cherry Semiconductor Corporation

Package Specification

PACKAGE DIMENSIONS IN mm (INCHES)

D

Lead Count Metric English

Max Min Max Min
14L PDIP 19.69 18.67 .775 .735
16L SO Wide 10.50 10.10 .413 .398

PACKAGE THERMAL DATA

Thermal Data 14 Lead 16 Lead

PDIP SO Wide

RΘ

JC

typ 48 23 ˚C/W

RΘ

JA

typ 85 105 ˚C/W

CS290/291

Ordering Information

Part Number Description

CS290N14 14L PDIP
CS291N14 14L PDIP
CS290DW16 16 Lead SO Wide
CS290DWR16 16 Lead SO Wide (tape & reel)
CS291DW16 16 Lead SO Wide
CS291DWR16 16 Lead SO Wide (tape & reel)

Cherry Semiconductor Corporation reserves the right to
make changes to the specifications without notice. Please
contact Cherry Semiconductor Corporation for the latest
available information.

Plastic DIP (N); 300 mil wide

0.39 (.015)
MIN.

2.54 (.100) BSC

1.77 (.070)

1.14 (.045)

D

Some 8 and 16 lead
packages may have
1/2 lead at the end
of the package.
All specs are the same.

.203 (.008)

.356 (.014)

REF: JEDEC MS-001

3.68 (.145)

2.92 (.115)

8.26 (.325)

7.62 (.300)

7.11 (.280)

6.10 (.240)

.356 (.014)

.558 (.022)

Surface Mount Wide Body (DW); 300 mil wide

1.27 (.050) BSC

7.60 (.299)

7.40 (.291)

10.65 (.419)

10.00 (.394)

D

0.32 (.013)

0.23 (.009)

1.27 (.050)

0.40 (.016)

REF: JEDEC MS-013

2.49 (.098)

2.24 (.088)

0.51 (.020)

0.33 (.013)

2.65 (.104)

2.35 (.093)

0.30 (.012)

0.10 (.004)