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LD7577J

Leadtrend
Part Number LD7577J
Manufacturer Leadtrend
Description High Voltage Green-Mode PWM Controller
Published Aug 15, 2015
Detailed Description LD7577J 8/16/2010 High Voltage Green-Mode PWM Controller with Brown-Out Protection Rev. 00b General Description The LD7...
Datasheet PDF File LD7577J PDF File

LD7577J
LD7577J

Overview
LD7577J 8/16/2010 High Voltage Green-Mode PWM Controller with Brown-Out Protection Rev.
00b General Description The LD7577J integrated several functions of protections, and EMI-improved solution in a tiny package.
It minimizes the component counts and the circuit space, and it’s perfect for the low cost of applications.
It provides functions of low startup current, green-mode power-saving operation, leading-edge blanking of the current sensing and internal slope compensation.
Also, the LD7577J features more protections like OLP (Over Load Protection), OVP (Over Voltage Protection), and brownout protection to prevent the circuit being damaged from the abnormal conditions.
Furthermore, the LD7577J features frequency trembling to suppress the 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 compensation z OVP (Over Voltage Protection) on Vcc z AC Input OVP (Over Voltage Protection) z OLP (Over Load Protection) z Brownout Protection 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 * BNO HV VCC OUT LD7577J CS GND COMP * *See Application Information Leadtrend Technology Corporation LD7577J-DS-00b August 2010 1 www.
leadtrend.
com.
tw photocoupler TL431 Pin Configuration SOP-7 (TOP VIEW) SOP-8 (TOP VIEW) DIP-8 (TOP VIEW) LD7577J HV VCC OUT HV NC VCC OUT HV NC VCC OUT 7 65 LD7577JGR YYWWPP 1 23 4 8 7 65 LD7577JGS YYWWPP 1 234 8 76 5 LD7577JGN YYWWPP 1 234 YY: WW: PP: Year code Week code Production code BNO COMP CS GND BNO COMP CS GND BNO COMP CS GND Ordering Information Part number Switching Freq.
Package LD7577J GR 65KHz SOP-7 Green package ...


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