LD7516CGL datasheet(1/14 Pages) LEADTREND

Part #	LD7516CGL

Description	Primary Side Quasi-Resonant Controller Operating in CV/CC Mode

PDF	14 Pages

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Manufacturer	LEADTREND [Leadtrend Technology]

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

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LD7516C

08/31/2016

1

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD7516C-DS-01 August 2016

Primary Side Quasi-Resonant Controller

Operating in CV/CC Mode

REV. 01

General Description

The LD7516C is an excellent primary side feedback MOS

controller with CV/CC operation, integrated with several

functions of protections. It minimizes the component

counts and is available in a tiny SOT-26 package. Those

make it an ideal design for low cost applications.

It

provides

functions

of

ultra-low

startup

current,

green-mode power-saving operation and leading-edge

blanking of the current sensing. Also, the LD7516C

features Internal OTP (Over Temperature Protection) and

OVP (Over Voltage Protection) to prevent the circuit from

being damaged due to abnormal conditions.

In most cases, the power supply with primary-side

feedback controller would accompany with some serious

load regulation effect. To deal with this problem, the

LD7516C

consists

of

dedicated

load

regulation

compensation circuit to enhance its performance.

Features

 Primary-Side Feedback Control with Quasi-Resonant

Operation

 120mA/-200mA unbalanced MOS driving capability

 Constant Voltage within

5%

 Built-In Adjustable Load Regulation Compensation

 Constant Current Control

 Ultra-Low Startup Current (<1.5

A)

 0.65mA Low Operating Current at Light Load

 75 kHz Maximum Switching Frequency.

 Current Mode Control

 Green Mode Control Improve Efficiency

 LEB (Leading-Edge Blanking) on CS Pin

 Built-in Soft Start

 VCC OVP (Over Voltage Protection)

 FB Pin Open/Short Protection

 Internal OTP (Over Temperature Protection)

Applications

 Mobile Phone Adapter

 Lower Power AC/DC Adapter

Typical Application

VCC

AC

Input

DC

Output

EMI

Filter

OUT

CS

COMP

LD7516C

GND

FB

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LD7516CGL Datasheet(PDF) 1 Page - Leadtrend Technology

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