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AP3720 - CURRENT MODE PWM CONTROLLER

General Description

The AP3720 is a low startup current, current mode PWM controller with green-mode operation.

Key Features

  • The protection functions include cycle-by-cycle current limit (OCP), VCC over voltage protection (OVP), OTP and OLP. The AP3720 is available in DIP-8 and SOIC-8 packages. Features.
  • Low Startup Current (2.5µA) and Low Operating Current (1.2mA).
  • Off-line Converter Applied in Sub 25W Range.
  • Skip Cycle Mode Achieves Low Standby Power (.

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Datasheet Details

Part number AP3720
Manufacturer BCD Semiconductor
File Size 342.69 KB
Description CURRENT MODE PWM CONTROLLER
Datasheet download datasheet AP3720 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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Preliminary Datasheet CURRENT MODE PWM CONTROLLER FOR BJT AP3720 General Description The AP3720 is a low startup current, current mode PWM controller with green-mode operation. The PWM switching frequency at normal operation is 65k, but when the output power drops below the specifically level, the device enters the frequency-drop mode and the typical operating frequency is 20kHz (no audible noise). Additionally, when the load drops to a very low level or zero, the IC operates in so called ‘burst mode’ to minimize switching loss. The IC integrated a lot of functions such as the Lead-Edge Blanking (LEB) of the current sensing, internal slope compensation, line compensation, and several protection features.