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LD7522H

Leadtrend Technology
Part Number LD7522H
Manufacturer Leadtrend Technology
Description Smart Green-Mode PWM Controller
Published Jul 5, 2015
Detailed Description LD7522H 1/9/2009 Smart Green-Mode PWM Controller with Multiple Latch-Mode Rev. 04 Protections General Description Th...
Datasheet PDF File LD7522H PDF File

LD7522H
LD7522H


Overview
LD7522H 1/9/2009 Smart Green-Mode PWM Controller with Multiple Latch-Mode Rev.
04 Protections General Description The LD7522H is a low startup current, current mode PWM controller with green-mode power-saving operation.
The SOP-8/DIP-8 package integrated functions such as the leading- edge blanking of the current sensing, internal slope compensation, line compensation, and several protection features.
The protection functions include cycle-by-cycle current limit, OVP, OTP, OLP, and brownout protection.
It provides the users a high efficiency, low external component counts solution for AC/DC power applications.
Furthermore, to satisfy various protection requirements, both latch-mode protection and auto-recoverable protection can be easily achieved by configuring LD7522H on different operation modes.
The special green-mode control is not only to achieve the low power consumption but also to offer a non-audible-noise operation when the LD7522H is operating under light load or no load condition.
Features z High-Voltage CMOS Process with Excellent ESD protection z Very Low Startup Current (< 35μA) 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) z OLP (Over Load Protection) z OTP (Over Temperature Protection) through a NTC z Brownout Protection z Flexibility on Latch/Auto-Recoverable Protection Mode z 500mA Driving Capability Applications z Switching AC/DC Adaptor and Battery Charger z Open Frame Switching Power Supply z LCD Monitor/TV Power Typical Application AC EMI input Filter OVP VCC BNO LD7522H OUT CS (-)LATCH GND COMP Leadtrend Technology Corporation LD7522H-DS-04 January 2009 1 www.
leadtrend.
com.
tw photocoupler TL431 Pin Configuration SOP-8 & DIP-8 (TOP VIEW) LD7522H OVP VCC OUT GND 8 765 TOP MARK YYWWPP 1 234 YY: Year code (D: 2004, E: 2005….
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) WW: week code PP: production code BNO COMP (-)LATCH ...


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