LD7752

2

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD7752-DS-01 June 2013

Pin Configuration

YY:

Year code

WW:

Week code

PP:

Production code

1

8

2

3

4

7

6

5

TOP MARK

YYWWPP

YYWWPP

SOP-8 /DIP-8(TOP VIEW)

1

7

2

3

4

6

5

TOP MARK

YYWWPP

YYWWPP

SOP-7 (TOP VIEW)

Ordering Information

Part number

Switching Freq.

Package

Top Mark

Shipping

LD7752 GS

65kHz

SOP-8

LD7752 GS

2500 /tape & reel

LD7752 GR

65kHz

SOP-7

LD7752 GR

2500 /tape & reel

LD7752 GN

65kHz

DIP-8

LD7752 GN

3600 /tube /Carton

The LD7752 is ROHS compliant/ Green Packaged.

Pin Descriptions

PIN

NAME

FUNCTION

1

CT

Soft start time adjustment.

2

COMP

Voltage feedback pin (same as the COMP pin in UC384X). Connect a photo-coupler

to close the control loop and achieve regulation.

3

CS

Current sense pin, connect it to sense the MOSFET current

4

GND

Ground

5

OUT

Gate drive output to drive the external MOSFET

6

VCC

Supply voltage pin

7

NC

Unconnected Pin

8

HV

Connect this pin with positive terminal of bulk capacitor to provide startup current for

the controller. As Vcc voltage trips to UVLO (on), this HV loop will be disabled to

minimize power loss through the startup circuit.