LD5857

2

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD5857-DS-00 April 2014

Pin Configuration

VCC

1

8

2

3

4

7

6

5

TOP MARK

YYWWPP

YYWWPP

YY:

Year code

WW: Week code

PP:

Production code

SOP-8 (TOP VIEW)

Ordering Information

Part number

Package

TOP MARK

Shipping

LD5857 GS

SOP-8

LD5857 GS

2500 /tape & reel

Note: The LD5857 is ROHS compliant/ Green Packaged.

Pin Descriptions

PIN

NAME

FUNCTION

1

VCC

Power source VCC pin.

2

DRV

Gate drive output to drive the external MOSFET.

3

GND

Ground.

4

CS

Current Sense pin. Connect with an external current sensing resistor to GND. CS

pin voltage is used to provide current feedback in the control loop and detect an

overcurrent condition.

5

FB

LED output current feedback through a current sense resistor.

6

COMP

It

’s a compensation of the error amplifier

7

OVP

Over-voltage protection.

8

DIM

FB Dimming Input. (Input PWM signal.)