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LD7592SGS Datasheet(PDF) 1 Page - Leadtrend Technology |
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LD7592SGS Datasheet(HTML) 1 Page - Leadtrend Technology |
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1 / 16 page  LD7592S 05/08/2018 1 Leadtrend Technology Corporation www.leadtrend.com.tw LD7592S-DS-00 May 2018 Transition-Mode PFC Controller with Fault Condition Protection REV. 00 General Description The LD7592S is a voltage mode PFC controller operating on transition mode, with several integrated functions of protection, such as OVP, OCP, and brown-in protection. It reduces the components counts and is available in a SOP-8 or DIP-8 package. Those make it an ideal design for low cost applications. It provides functions of low startup current, over voltage protection, open feedback protection, disable function, over current protection, under voltage lockout and integrated LEB of current sensing. The LD7592S adopts transition mode for power factor correction and realizes high efficiency and a low switching noise by zero current switching. Typical Application for Boost PFC Features Transition Mode of PFC Pre-Regulator Voltage Mode Control Programmable Maximum on-time ZCD Auxiliary Winding is Unnecessary Low Startup Current (<1 A) UVLO (Under Voltage Lockout) LEB (Leading-Edge Blanking) on CS pin VCC OVP (Over Voltage Protection) on VCC pin VO OVP (Over Voltage Protection) on INV pin Bulk Cap OVP (Over Voltage Protection) on OVP pin OCP (Cycle by Cycle Current Limit) 900/-1200mA Driving Capability Internal OTP (Over Temperature Protection) Applications Adaptor of Output above 75W. LCD TV Power Supply AC Input LD7592S OUT CS GND COMP VCC RAMP EMI Filter INV OVP |
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