DatasheetsPDF.com

LD7578

Leadtrend
Part Number LD7578
Manufacturer Leadtrend
Description Green-Mode PWM Controller
Published Mar 3, 2015
Detailed Description LD7578 10/08/2008 Green-Mode PWM Controller with HV Start-Up Circuit and OTP Protection Rev.00 General Description F...
Datasheet PDF File LD7578 PDF File

LD7578
LD7578

Overview
LD7578 10/08/2008 Green-Mode PWM Controller with HV Start-Up Circuit and OTP Protection Rev.
00 General Description Features The LD7578 integrates several functions of protections in a SOP-8 package.
It minimizes the component counts and the circuit space.
The device provides functions of low startup current, green-mode power-saving operation, leading-edge blanking of the current sensing and internal slope compensation.
Also, the LD7578 features more protections like OLP (Over Load Protection), OVP (Over Voltage Protection), and external OTP (Over Temperature Protection) to prevent the circuit from being damaged under abnormal conditions.
z High-Voltage (500V) Startup Circuit 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) on Vcc z OLP (Over Load Protection) z OTP through a NTC/Latch-Off 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 input EMI Filter * HV VCC OUT LD7578 (-)LATCH CS GND COMP * *See Application Information photocoupler TL431 Leadtrend Technology Corporation LD7578-DS-00 October 2008 1 www.
leadtrend.
com.
tw Pin Configuration SOP-8 & DIP-8 (TOP VIEW) HV NC VCC OUT 8 76 5 TOP MARK YYWWPP 1234 YY: WW: PP: Year code Week code Production code LD7578 (-) LATCH COMP CS GND Ordering Information Part number Package LD7578 GS SOP-8 Green package LD7578 GN DIP-8 Green package The LD7578 is ROHS compliant/ Green Package.
Top Mark LD7578GS LD7578GN Shipping 2500 /tape & reel 3600 /tube /Carton Pin Descriptions PIN NAME FUNCTION Pulling this pin below 0.
95V will shutdown the controller and enter latch mode unless AC power-on recycles.
By connecting a NTC from this pin to ground, it will achieve 1 (-) LATCH the OTP protection function.
Keep this pin float to...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)