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LD5521 - Quasi-Resonant PWM Flyback Controller

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Datasheet Details

Part number LD5521
Manufacturer Leadtrend
File Size 349.18 KB
Description Quasi-Resonant PWM Flyback Controller
Datasheet download datasheet LD5521 Datasheet

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.

Overview

LD5521 07/24/2015 Quasi-Resonant PWM Flyback Controller with Frequency Swapping and Integrated Protections REV.

Key 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 noise level and thus helps the power circuit designers to easily deal with the EMI filter by spending minimum amount of component cost and developing time. Typical.

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