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LD7922 - Primary-Side PWM Power Switch

General Description

The LD7922 integrates a 700V power MOSFET and a primary-side feedback PWM controller with CV/CC operation in a DIP-7 package.

The LD7922 is designed for low power adapter/charger and LED lighting applications.

It minimizes the components counts and is available in tiny packages.

Key Features

  • OTP (Over Temperature Protection) and OVP (Over Voltage Protection) to prevent the circuit from being damaged under abnormal conditions. Features.
  • Built-in 700V Power MOSFET.
  • Primary-side Feedback Control.
  • Constant Current Control.
  • Built-in Load Regulation Compensation.
  • Built-in Primary Winding Inductance Compensation.
  • Low Startup Current (.

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Datasheet Details

Part number LD7922
Manufacturer Leadtrend Technology
File Size 302.79 KB
Description Primary-Side PWM Power Switch
Datasheet download datasheet LD7922 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LD7922 08/02/2012 Primary-Side PWM Power Switch with CV/CC Operation VER. 00 General Description The LD7922 integrates a 700V power MOSFET and a primary-side feedback PWM controller with CV/CC operation in a DIP-7 package. The LD7922 is designed for low power adapter/charger and LED lighting applications. It minimizes the components counts and is available in tiny packages. Those make it an ideal design for low cost applications. The LD7922 provides constant voltage, constant current (CV/CC) operation requiring neither photo-coupler nor secondary control circuit. Also, the LD7922 features OTP (Over Temperature Protection) and OVP (Over Voltage Protection) to prevent the circuit from being damaged under abnormal conditions.