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LD5520 - Quasi-Resonant PWM Controller

Description

The LD5520 is built with several functions, protection and EMI-improved solution in a tiny package.

It takes less components counts or circuit space, especially ideal for those total solutions of low cost.

Features

  • more protections like OLP (Over Load Protection), FB pin OVP (FB pin Over Voltage Protection) and OVP (Over Voltage Protection) to prevent circuit damage occurred under abnormal conditions. Furthermore, the adjustable frequency swapping function is to reduce the noise level and thus helps the power circuit designers to easily deal with the EMI filter design by spending minimum amount of component cost and developing time. Features.
  • Secondary -side Feedback Control with qua.

📥 Download Datasheet

Datasheet Details

Part number LD5520
Manufacturer Leadtrend
File Size 667.45 KB
Description Quasi-Resonant PWM Controller
Datasheet download datasheet LD5520 Datasheet

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Full PDF Text Transcription

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LD5520 05/17/2016 Quasi-Resonant PWM Controller with Frequency Swapping and Integrated Protections REV: 00 General Description The LD5520 is built with several functions, protection and EMI-improved solution in a tiny 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 slope compensation. It also features more protections like OLP (Over Load Protection), FB pin OVP (FB pin Over Voltage Protection) and OVP (Over Voltage Protection) to prevent circuit damage occurred under abnormal conditions.
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