LD7765 datasheet(1/19 Pages) LEADTREND

Part #	LD7765

Description	High Voltage Green-Mode PWM Controller with BNO Function

PDF	19 Pages

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Manufacturer	LEADTREND [Leadtrend Technology]

Direct Link	https://www.leadtrend.com.tw/

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LD7765

10/29/2012

1

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD7765-DS-00

October 2012

High Voltage Green-Mode PWM Controller

with BNO Function

REV: 00

General Description

The LD7765 is a Green Mode PWM IC, featuring X-cap

discharge functions to reduce the discharge resistor loss

in less component counts.

The

LD7765

provides

HV

start-up,

green-mode

power-saving operation, internal slope compensation and

Soft-start functions which could minimize the power loss

and enhance the system performance.

With complete protection as OLP/ OVP/ OTP and

brown-in/out, this chip prevents the circuit from being

damaged in abnormal conditions.

Features

 High-Voltage (500V) Startup Circuit on HV pin

 Brown-in/out Function on HV pin

 X-Cap Discharge function on HV pin

 Frequency Trembling for EMI improve

 Green Mode Control for Power Saving

 Current Mode control with Slope Compensation

 OVP (Over Voltage Protection) on Vcc

 OLP (Over Load Protection)

 OTP (Over temperature protection)

 Soft Start

 Soft Driving

 +500mA/-800mA Driving Capability

Applications

 Switching AC/DC Adaptor and Battery Charger

 Open Frame Switching Power Supply

 LCD Monitor/TV Power

Typical Application

EMI

Filter

+

~

AC

Input

OTP

GND

COMP

CS

OUT

VCC

HV

DC

Output

LD7765

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