LD7537 datasheet(1/16 Pages) LEADTREND

номер детали	LD7537

подробное описание детали	Green-Mode PWM Controller with Frequency Swapping and Integrated Protections

PDF	16 Pages

Scroll/Zoom	100%

производитель	LEADTREND [Leadtrend Technology]

домашняя страница	https://www.leadtrend.com.tw/

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LD7537

12/15/2011

1

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD7537-DS-01a December 2011

Green-Mode PWM Controller with Frequency Swapping

and Integrated Protections

Rev. 01a

General Description

The LD7537 is built-in with several functions, protection

and EMI-improved solution in a tiny package. It takes less

components counts or circuit space, especially ideal for

those total solutions of low cost.

The implemented functions include low startup current,

green-mode

power-saving

operation,

leading-edge

blanking of the current sensing and internal slope

compensation.

It also features more protections like

OLP (Over Load Protection) and OVP (Over Voltage

Protection) to prevent circuit damage occurred under

abnormal conditions.

Furthermore, the Frequency Swapping function is to

reduce the noise level and thus helps the power circuit

designers to easily deal with the EMI filter design by

spending minimum amount of component cost and

developing time.

Features

High-Voltage CMOS Process with Excellent ESD

protection

Very Low Startup Current (<20

μA)

Current Mode Control

Green Mode Control

UVLO (Under Voltage Lockout)

LEB (Leading-Edge Blanking) on CS Pin

Internal Frequency Swapping

Internal Slope Compensation

OVP (Over Voltage Protection) on Vcc Pin

Brownout Protection

OLP (Over Load Protection)

300mA Driving Capability

Applications

Switching AC/DC Adaptor and Battery Charger

Open Frame Switching Power Supply

Typical Application

EMI

Filter

BNO

OUT

CS

VCC

GND

COMP

LD7537

photocoupler

AC

input

DC

Output

Free Datasheet http://www.nDatasheet.com

Аналогичный номер детали - LD7537

производитель	номер детали	датащи	подробное описание детали
Leadtrend Technology	LD7530	340Kb / 19P	Green-Mode PWM Controller with Integrated Protections and Adjustable OLP Delay Time 12/5/2007
	LD7531	360Kb / 18P	Green-Mode PWM Controller with Frequency Trembling and Integrated Protections 6/25/2008
	LD7535	431Kb / 19P	Green-Mode PWM Controller with Integrated Protections 12/11/2007
	LD7536	374Kb / 16P	Green-Mode PWM Controller with Frequency Swapping and Integrated Protections
	LD7536GL	374Kb / 16P	Green-Mode PWM Controller with Frequency Swapping and Integrated Protections

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Аналогичное описание - LD7537

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Leadtrend Technology	LD9704R	699Kb / 14P	Green-Mode PWM Controller with Frequency Swapping with protections and MOSFET Integrated
	LD7536	374Kb / 16P	Green-Mode PWM Controller with Frequency Swapping and Integrated Protections
	LD5530	454Kb / 16P	Green-Mode PWM Controller with Frequency Swapping and Integrated Protections
	LD7552B	300Kb / 16P	Green-Mode PWM Controller with Integrated Protections
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	GR8876A	896Kb / 15P	Green-Mode PWM Controller with Integrated Protections
List of Unclassifed Man...	LD5530R	538Kb / 16P	Green-Mode PWM Controller with Frequency Swapping and Integrated Protections
Leadtrend Technology	LD7536R	327Kb / 16P	Green-Mode PWM Controller with Frequency Swapping and Integrated Protections
Leadtrend Technology	LD7531	360Kb / 18P	Green-Mode PWM Controller with Frequency Trembling and Integrated Protections 6/25/2008

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Аналогичный номер детали - LD7537

Аналогичное описание - LD7537

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