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LD5521

Part Number	LD5521
Manufacturer	Leadtrend
Description	Quasi-Resonant PWM Flyback Controller
Published	Jun 22, 2018
Detailed Description	LD5521 07/24/2015 Quasi-Resonant PWM Flyback Controller with Frequency Swapping and Integrated Protections REV. 01 Gene...
Datasheet	LD5521 PDF File

Overview

LD5521 07/24/2015 Quasi-Resonant PWM Flyback Controller with Frequency Swapping and Integrated Protections REV.
01 General Description The LD5521 integrate a quasi-resonant PWM control function into a SOT-26 package.
It takes less components counts or circuit space, especially ideal for those total solutions of low cost.
The implemented functions include low startup current, green-mode power-saving operation, leading-edge blanking of the current sensing and internal soft driving.
It also features more protections like OLP (Over Load Protection) and OVP (Over Voltage Protection) to prevent circuit damage occurred under abnormal conditions.
Furthermore, the QR jitter function could reduce the...

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