LD7576PS Просмотр технического описания (PDF) - Unspecified

Номер в каталоге

Компоненты Описание

производитель

LD7576PS

Green-Mode PWM Controller

Unspecified 

LD7576/76H/76J/76K

12/5/2007

Green-Mode PWM Controller with High-Voltage

Start-Up Circuit and Adjustable OLP Delay Time

REV. 03

General Description

The LD7576X series bring high performance, combines with

highly integrated functions, protections and EMI-improve

solution. It’s an ideal solution for those cost-sensitive system,

reducing component count and overall system cost.

The LD7576X series features near-lossless high voltage

startup circuit, green-mode power-saving operation,

leading-edge blanking of the current sensing and internal

slope compensation. They also consist with more

protections of OLP (Over Load Protection), OVP (Over

Voltage Protection) and OTP (Over Temperature Protection)

to prevent the circuit damage under abnormal conditions.

The LD7576X series are available in DIP-8 and SOP-8

package.

Features

z High-Voltage (500V) Startup Circuit

z Current Mode Control

z Non-Audible-Noise Green Mode Control

z UVLO (Under Voltage Lockout)

z LEB (Leading-Edge Blanking) on CS Pin

z Internal Slope Compensation

z OVP (Over Voltage Protection) on Vcc

z On-Chip OTP (Over Temperature Protection)

z OLP (Over Load Protection)

z Latch Mode Protection by CT pin

z 500mA Driving Capability

z Adjustable OLP delay time

Applications

z Switching AC/DC Adaptor and Battery Charger

z Open Frame Switching Power Supply

z LCD Monitor/TV Power

Typical Application

Leadtrend Technology Corporation

LD7576-DS-03 December 2007

1

www.leadtrend.com.tw

Share Link: