LD5523K

05/16/2018

2

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD5523K-DS-00 May 2018

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

t23K

: LD5523K

1

2

3

4

5

6

GND COMP

FB

OUT

VCC

CS

YWt

1

8

2

3

4

7

6

5

TOP MARK

YYWWPP

YYWWPP

23K

pp

Ordering Information

Part number

Package

TOP MARK

Shipping

LD5523K GL

SOT-26

(Green Package)

YWt/23K

3000 /tape & reel

LD5523K GN

DIP-8

(Green Package)

LD5523K

3600 /tube /Carton

The LD5523K is RoHs compliant/ green packaged.

Protection Mode

Product

Name

Switching

Freq.

VCC_OVP

FB_OVP

OSCP

OLP

BNI/BNO

Bulk cap

OVP

CS_OTP

Int. OTP

SDSP

LD5523K

65kHz

Auto

recovery

Auto

recovery

Auto

recovery

Auto

recovery

Auto

recovery

Auto

recovery

Auto

recovery

Auto

recovery

Auto

recovery

Pin Descriptions

NAME

PIN

(SOT-26)

Pin

(DIP-8)

FUNCTION

GND

1

8

Ground

COMP

2

7

Output of the error amplifier for voltage compensation

FB

3

5

Auxiliary voltage sense, brown in/out and Quasi Resonant detection

CS

4

4

Current sense pin, connect to sense the MOSFET current

VCC

5

2

Supply voltage pin

OUT

6

1

Gate drive output to drive the external MOSFET

NC

3

Unconnected Pin

NC

6

Unconnected Pin