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LD7522

Leadtrend Technology
Part Number LD7522
Manufacturer Leadtrend Technology
Description Smart Green-Mode PWM Controller
Published Apr 13, 2011
Detailed Description LD7522 12/5/2008 Smart Green-Mode PWM Controller with Multiple Protections REV:04 General Description The LD7522 is a ...
Datasheet PDF File LD7522 PDF File

LD7522
LD7522

Overview
LD7522 12/5/2008 Smart Green-Mode PWM Controller with Multiple Protections REV:04 General Description The LD7522 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 LD7522 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 LD7522 is operating under light load or no load condition.
-Patent Pending Features z 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) OTP (Over Temperature Protection) through a NTC Brownout Protection Flexibility on Latch/Auto-Recoverable Protection Mode 500mA Driving Capability Applications z z z Switching AC/DC Adaptor and Battery Charger Open Frame Switching Power Supply LCD Monitor/TV Power Typical Application AC input EMI Filter OVP 8 7 VCC 6 OUT LD7522 BNO 1 3 5 2 4 CS www.
DataSheet4U.
com (-)LATCH GND COMP photocoupler TL431 1 Leadtrend Technology Corporation LD7522-DS-04 December 2008 www.
leadtrend.
com.
tw LD7522 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 co...


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