LD5535E1/A1

10/05/2017

2

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD5535E1/A1-DS-00 October 2017

Pin Configuration

Ordering Information

Part number

Package

Top Mark

Shipping

LD5535E1 GL

SOT-26

Yt z/ WE1

3000 / tape & reel

LD5535A1 GL

SOT-26

Yt z/ WA1

3000 / tape & reel

The LD5535E1/A1 is ROHS compliant / Green Packaged

Protection Mode

Product Name

Switching

Freq.

OLP

VCC OVP

CS OVP

OSCP

SDSP

OTP Pin

Int. OTP

LD5535E1

65kHz

Auto

recovery

Auto

recovery

Auto

recovery

Auto

recovery

Auto recovery /

4 Cycle

Auto

recovery

Auto

recovery

LD5535A1

65kHz

Auto

recovery

Auto

recovery

Auto

recovery

Auto

recovery

Auto recovery /

4 Cycle

Latch

Auto

recovery

Pin Descriptions

SOT-26

NAME

FUNCTION

1

GND

Ground

2

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

OTP

Pull this pin below 0.95V to shut down the controller into latch mode until the

AC resumes power-on. Connecting this pin to ground with NTC will achieve

OTP protection. Let this pin float or connect a 100k

 resistor to disable the

latch protection.

4

CS

Current sense pin, connect it to sense the MOSFET current.

5

VCC

Supply voltage pin

6

OUT

Gate drive output to drive the external MOSFET

SOT-26 (TOP VIEW)

Y

: Year code (D: 2004, E: 2005

…..)

W

: Week code

PP

: Production code

tzX1

: LD5535E1 or LD5535A1

1

2

3

4

5

6

GND COMP OTP

OUT

VCC

CS

Yt z

WX1

pp