© Semiconductor Components Industries, LLC, 2005

September, 2005 − Rev. 7

1

Publication Order Number:

CS2841B/D

CS2841B

Automotive Current Mode

PWM Control Circuit

The CS2841B provides all the necessary features to implement

off−line fixed frequency current−mode control with a minimum

number of external components.

The CS2841B (a variation of the CS2843A) is designed specifically

for use in automotive operation. The low start threshold voltage of 8.0 V

(typ), and the ability to survive 40 V automotive load dump transients

are important for automotive subsystem designs. The CS2841 series

has a history of quality and reliability in automotive applications.

The CS2841B incorporates a precision temperature−controlled

oscillator with an internally trimmed discharge current to minimize

variations in frequency. Duty−cycles greater than 50% are also

output stage is enabled. Ion implant resistors provide tighter control of

undervoltage lockout.

Features

*For additional information on our Pb−Free strategy and soldering details, please

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

CS2841B = Device Code

A

= Assembly Location

WL

= Wafer Lot

YY, Y

= Year

WW

= Work Week

G

= Pb−Free Package

PDIP−8

N SUFFIX

CASE 626

PIN CONNECTIONS AND

MARKING DIAGRAM

GND

COMP

Sense

OSC

1

8

SOIC−14

D SUFFIX

CASE 751A

GND

OSC

PWR GND

NC

Sense

NC

NC

NC

COMP

1

14

SOIC−14

PDIP−8

http://onsemi.com

See detailed ordering and shipping information in the package

dimensions section on page 2 of this data sheet.

ORDERING INFORMATION