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LD7523

Leadtrend
Part Number LD7523
Manufacturer Leadtrend
Description Smart Green-Mode PWM Controller
Published Oct 17, 2013
Detailed Description LD7523 6/16/2009 Smart Green-Mode PWM Controller with Multiple Protections REV: 00 General Description The LD7523 is ...
Datasheet PDF File LD7523 PDF File

LD7523
LD7523


Overview
LD7523 6/16/2009 Smart Green-Mode PWM Controller with Multiple Protections REV: 00 General Description The LD7523 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, 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 LD7523 on different operation modes.
The special green-mode control is not only to achieve the low power consumption operation but also the to offer a is non-audible-noise when LD7523 Features z z z z z z z z z z z z z High-Voltage CMOS Process with Excellent ESD protection Very Low Startup Current (< 35μA) Current Mode Control Non-audible-noise Green Mode Control UVLO (Under Voltage Lockout) LEB (Leading-Edge Blanking) on CS Pin Internal Slope Compensation Programmable Line Compensation OVP (Over Voltage Protection) OLP (Over Load Protection) Brownout Protection Built in OLP De-Latch Timer 500mA Driving Capability Applications z z z Switching AC/DC Adaptor and Battery Charger Open Frame Switching Power Supply LCD Monitor/TV Power operating under light load or no load condition.
Typical Application AC input EMI Filter VCC OVP OUT LD7523 CS BNO GND COMP photocoupler TL431 1 Leadtrend Technology Corporation LD7523-DS-00 June 2009 www.
leadtrend.
com.
tw Free Datasheet http://www.
datasheet4u.
com/ LD7523 Pin Configuration SOP-8 & DIP-8(TOP VIEW) GND 5 OVP VCC 7 8 OUT 6 TOP MARK YYWWPP 1 2 3 4 YY : Year code (D: 2004, E: 2005….
.
) WW : Week code ## : Production code COMP BNO Ordering Information Part number L...



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