© Semiconductor Components Industries, LLC, 2006

July, 2006 − Rev. 4

1

Publication Order Number:

CS52843/D

CS52843

Current Mode

PWM Control Circuit

The CS52843 provides all the necessary features to implement

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

number of external components.

The CS52843 incorporates a new precision temperature−controlled

oscillator to minimize variations in frequency. An undervoltage

enabled. In the CS52843 turn on is at 8.4 V and turn off at 7.6 V.

Other features include low start−up current, pulse−by−pulse current

limiting, and a high−current totem pole output for driving capacitive

loads, such as gate of a power MOSFET. The output is low in the off

state, consistent with N−channel devices.

Features

http://onsemi.com

A

= Assembly Location

WL, L

= Wafer Lot

YY, Y

= Year

WW, W = Work Week

PIN CONNECTIONS AND

MARKING DIAGRAMS

SO−8

D SUFFIX

CASE 751

COMP

1

Sense

OSC

GND

Device

Package

Shipping

ORDERING INFORMATION

CS52843ED8

SO−8

95 Units/Rail

CS52843EDR8

SO−8

CS52843ED14

SO−14

2500 Tape & Reel

CS52843EDR14

SO−14

2500 Tape & Reel

55 Units/Rail

1

8

SO−14

D SUFFIX

CASE 751A

GND

OSC

Pwr GND

NC

Sense

NC

1

14

NC

NC

COMP

1

14