ld7578 Leadtrend Technology, ld7578 Datasheet

ld7578

Manufacturer Part Number

ld7578

Description

Green-mode Pwm Controller With Hv Start-up Circuit And Otp Protection

Manufacturer

Leadtrend Technology

Datasheet

1.LD7578.pdf (19 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

ld7578JGS

Manufacturer:

LEADTREN

Quantity:

20 000

Current page: 1 of 19
Download datasheet (405Kb)

Rev.00

General Description

The LD7578 integrates several functions of protections in

a SOP-8 package. It minimizes the component counts and

the circuit space.

The device provides functions of low startup current,

green-mode

blanking of the current sensing and internal slope

compensation.

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

Voltage Protection), and external OTP (Over Temperature

Protection) to prevent the circuit from being damaged

under abnormal conditions.

Typical Application

Leadtrend Technology Corporation

LD7578-DS-00 October 2008

Green-Mode PWM Controller with HV Start-Up Circuit

power-saving

input

Also, the LD7578 features more

Filter

EMI

*See Application Information

operation,

(-)LATCH

www.leadtrend.com.tw

and OTP Protection

leading-edge

LD7578

GND

VCC

COMP

OUT

Features

Applications

High-Voltage (500V) Startup Circuit

Current Mode Control

Non-Audible-Noise Green Mode Control

UVLO (Under Voltage Lockout)

LEB (Leading-Edge Blanking) on CS Pin

Internal Slope Compensation

OVP (Over Voltage Protection) on Vcc

OLP (Over Load Protection)

OTP through a NTC/Latch-Off Mode

500mA Driving Capability

Switching AC/DC Adaptor and Battery Charger

Open Frame Switching Power Supply

LCD Monitor/TV Power

photocoupler

TL431

LD7578

10/08/2008

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