LD7537

2

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD7537-DS-01a December 2011

Pin Configuration

DIP-8 (TOP VIEW)

SOT-26 (TOP VIEW)

YY, Y

: Year code (D: 2004, E: 2005…..)

WW, W : Week code

PP

: Production code

P37

: LD7537

12

3

4

5

6

GND COMP BNO

OUT

VCC

CS

YWP

1

8

2

3

4

7

6

5

TOP MARK

YYWWPP

37

pp

Ordering Information

Part number

Package

Top Mark

Shipping

LD7537GL

SOT-26

Green Package

YWP/37

3000 /tape & reel

LD7537GN

DIP-8

Green Package

LD7537GN

3600 /tube /Carton

The LD7537GL is ROHS compliant.

Protection Mode

Switching Freq.

VCC OVP

OLP

BNO Pin

65kHz

Latch

Auto recovery/ 65ms

Auto recovery

Pin Descriptions

SOT-26

DIP-8

NAME

FUNCTION

1

8

GND

Ground

2

7

COMP

Voltage feedback pin (same as the COMP pin in UC384X). Connect

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

3

5

BNO

Brownout Protection Pin. Connect a resistor divider between this pin

and bulk capacitor voltage to set the brownout level. If the voltage is

less than threshold voltage, the PWM output will be disabled.

4

4

CS

Current sense pin, connect it to sense the MOSFET current

5

2

VCC

Supply voltage pin

6

1

OUT

Gate drive output to drive the external MOSFET

Free Datasheet http://www.nDatasheet.com