LD7552 데이터 시트보기 (PDF) - Unspecified

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LD7552

Green-Mode PWM Controller

Unspecified 

Pin Configuration

SOP-8 & DIP-8 (TOP VIEW)

8 765

TOP MARK

YYWWPP

1 23 4

YY: Year code (D: 2004, E: 2005…..)

WW: week code

PP: production code

Ordering Information

Part number

LD7552 IS

LD7552 BS

LD7552 IN

LD7552 BN

Package

SOP-8

SOP-8 (PB Free)

DIP-8

DIP-8 (PB Free)

TOP MARK

LD7552IS

LD7552BS

LD7552IN

LD7552BN

Shipping

2500 /tape & reel

2500 /tape & reel

3600 /tube /carton

3600 /tube /carton

Pin Descriptions

PIN

NAME

1

GND

2

COMP

3

VCC

4

RT

5

NC

6

CS

7

VCC

8

OUT

FUNCTION

Ground

Voltage feedback pin (same as the COMP pin in UC384X), By connecting a

photo-coupler to close the control loop and achieve the regulation.

Supply voltage pin

This pin is to program the switching frequency. By connecting a resistor to ground

to set the switching frequency.

Unconnected pin

Current sense pin, connect to sense the MOSFET current

Supply voltage pin

Gate drive output to drive the external MOSFET

2

Leadtrend Technology Corporation

LD7552-DS-00 February, 2005

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