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LD7578J

Leadtrend
Part Number LD7578J
Manufacturer Leadtrend
Description High Voltage Green-Mode PWM Controller
Published Jul 5, 2015
Detailed Description LD7578J 03/03/2009 High Voltage Green-Mode PWM Controller with Over Temperature Protection Rev. 00 General Descriptio...
Datasheet PDF File LD7578J PDF File

LD7578J
LD7578J

Overview
LD7578J 03/03/2009 High Voltage Green-Mode PWM Controller with Over Temperature Protection Rev.
00 General Description The LD7578J integrates several functions of protections, and EMI-improved solution in a SOP-8/or DIP-8 package to minimize 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 LD7578J features more protections like OLP (Over Load Protection), OVP (Over Voltage Protection), and OTP (Over Temperature Protection) to prevent the circuit being damaged under the abnormal conditions.
The LD7578J features built-in auto-recovery function for OVP on Vcc pin and OLP.
Furthermore, the LD7578J features frequency trembling to depress radiation noise and is an excellent solution for EMI filter design.
Features 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 Frequency Trembling z Internal Slope Compensation z Internal Over Current Protection z OVP (Over Voltage Protection) on Vcc z OLP (Over Load Protection) z External OTP through a NTC 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 Leadtrend Technology Corporation LD7578J-DS-00 March 2009 1 www.
leadtrend.
com.
tw Pin Configuration SOP-8 & DIP-8 (TOP VIEW) HV NC VCC OUT 8765 TOP MARK YYWWPP 1 234 YY: WW: PP: Year code Week code Production code LD7578J (-) LATCH COMP CS GND Ordering Information Part number LD7578J GS Switching Freq.
65KHz Protection Mode Auto recovery LD7578J GN 65KHz Auto recovery The LD7578J is green packaged.
Package SOP-8 DIP-8 Green package Green package Top Mark LD7578J GS LD7578J GN Shipping 2500 /tape & reel 3600 /tube /Carton Pin Descriptions PIN NAME 1...


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