LD7830

2

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD7830-DS-01a

August 2012

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

8

2

3

4

6

5

TOP MARK

YYWWPP

YYWWPP

SOP-7 (TOP VIEW)

Ordering Information

Part number

Package

Top Mark

Shipping

LD7830 GR

SOP-7

LD7830GR

2500 /tape & reel

LD7830 GS

SOP-8

LD7830GS

2500 /tape & reel

LD7830 GN

DIP-8

LD7830GN

3600 /tube /Carton

The LD7830 is green packaged.

Protection Mode

Part number

VCC OVP

OLP

LD7830

Auto recovery

Auto recovery

Pin Descriptions

Pin

NAME

FUNCTION

1

ZCD

Quasi resonance detector and programmable maximum ON-time.

2

COMP

Feedback pin. Connect a photo-coupler to close the control loop to achieve

regulation.

3

CS

Current sense pin, connect it to sense the MOSFET current for OCP

4

GND

Ground

5

OUT

Gate drive output to drive the external MOSFET

6

VCC

Power source VCC pin

7

NC

No connecting.

8

HV

Connect this pin to positive terminal of main bulk cap to provide startup current

for controller. Once Vcc is UVLO on, the HV loop will open and turn off internal

current source to minimize the power loss.