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LD7575

Part Number	LD7575
Manufacturer	Leadtrend
Description	Green-Mode PWM Controller
Published	Oct 15, 2008
Detailed Description	LD7575 6/5/2007 Green-Mode PWM Controller with High-Voltage Start-Up Circuit REV: 04a General Description www.DataShee...
Datasheet	LD7575 PDF File

Overview

LD7575 6/5/2007 Green-Mode PWM Controller with High-Voltage Start-Up Circuit REV: 04a General Description www.
DataSheet4U.
com The LD7575 is a current-mode PWM controller with Features z z z z z z z z z z High-Voltage (500V) Startup Circuit Current Mode Control Non-Audible-Noise Green Mode Control UVLO (Under Voltage Lockout) LEB (Leading-Edge Blanking) on CS Pin Programmable Switching Frequency Internal Slope Compensation OVP (Over Voltage Protection) on Vcc OLP (Over Load Protection) 500mA Driving Capability excellent power-saving operation.
It features a high- voltage current source to directly supply the startup current from bulk capacitor and further to provide a lossless startup circuit.
The integrated functions such as the leading-edge blanking of the current sensing, internal slope compensation, and the small package provide the users a high efficiency, minimum external component counts, and low cost solution for AC/DC power applications.
Furthermore, the embedded over voltage protection, over load protection and the special green-mode control provide the solution for users to design a high performance power circuit easily.
DIP-8 package.
The LD7575 is offered in both SOP-8 and Applications z z z Switching AC/DC Adapter and Battery Charger Open Frame Switching Power Supply LCD Monitor/TV Power Typical Application 1 Leadtrend Technology Corporation LD7575-DS-04a June 2007 LD7575 Pin Configuration SOP-8 & DIP-8 (TOP VIEW) VCC 6 8 7 OUT 5 NC HV www.
DataSheet4U.
com TOP MARK YYWWPP 1 2 3 4 YY: WW: PP: Year code Week code Production code RT COMP Ordering Information Part number LD7575 PS LD7575 PN Package SOP-8 DIP-8 Top Mark LD7575PS LD7575PN Shipping 2500 /tape & reel 3600 /tube /Carton The LD7575 is ROHS compliant.
Pin Descriptions PIN 1 NAME RT FUNCTION This pin is to program the switching frequency.
By connecting a resistor to ground to set the switching frequency.
Voltage feedback pin (same as the COMP pin in UC384X), By connecting a...

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