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LD7750

Leadtrend
Part Number LD7750
Manufacturer Leadtrend
Description High Voltage Green-Mode PWM Controller
Published Feb 18, 2014
Detailed Description LD7750 2/23/2010 High Voltage Green-Mode PWM Controller with Over Temperature Protection Rev. 00b General Description ...
Datasheet PDF File LD7750 PDF File

LD7750
LD7750

Overview
LD7750 2/23/2010 High Voltage Green-Mode PWM Controller with Over Temperature Protection Rev.
00b General Description The LD7750 integrates several functions of protections, and EMI-improved solution in a SOP-8, SOP-7, or DIP-8 package to minimize the component counts and the circuit space.
The device provides functions of low startup current, green-mode compensation.
Voltage power-saving Also, the operation, LD7750 OTP leading-edge features more blanking of the current sensing and internal slope protections like OLP (Over Load Protection), OVP (Over Protection), and (Over Temperature Protection) to prevent the circuit being damaged under the abnormal conditions.
The LD7750 features built-in auto-recovery function for OVP on Vcc pin and OLP.
Furthermore, the LD7750 features frequency swapping to depress radiation noise, providing an excellent solution for EMI filter design.
Features z z 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 Internal Frequency Swapping Internal Slope Compensation Internal Over Current Protection OVP (Over Voltage Protection) on Vcc OLP (Over Load Protection) External OTP through a NTC 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 * HV VCC OUT OTP LD7750 CS GND COMP * photocoupler *See Application Information 1 Leadtrend Technology Corporation LD7750-DS-00b February 2010 www.
leadtrend.
com.
tw Free Datasheet http://www.
datasheet4u.
ne LD7750 Pin Configuration SOP-8 & DIP-8 (TOP VIEW ) VCC OUT NC HV SOP-7 (TOP VIEW) VCC 6 8 7 6 5 7 OUT 5 HV TOP MARK YYWWPP 1 2 3 4 1 TOP MARK YYWWPP 2 3 4 YY: WW: PP: Year code Week code Production code OTP GND OTP COMP COMP Ordering Information Part number LD7750 GR LD7750 GS LD7750 GN Switching Freq.
65KHz 65KHz...


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