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BF1501 - Off Line AC/DC Switch

General Description

The THC0X switcher ICs cost effectively replace all power supplies up to 5W output power based on unregulated isolated linear transformer (50/60HZ).

Unlike conventional PWM (pulse width modulation) controllers, it regulates the output voltage in a new method of off-time modulation control.

Key Features

  • z Low start-up current.
  • Typ.15 µA.
  • Max.25 µA z Low operating current.
  • Typ.2 mA.
  • Max.5 mA z UV.

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Datasheet Details

Part number BF1501
Manufacturer BYD Microelectronics
File Size 214.12 KB
Description Off Line AC/DC Switch
Datasheet download datasheet BF1501 Datasheet

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Full PDF Text Transcription (Reference)

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BYD Microelectronics Co., Ltd. BF1501 Series Off Line AC/DC Switcher IC General Description The THC0X switcher ICs cost effectively replace all power supplies up to 5W output power based on unregulated isolated linear transformer (50/60HZ). Unlike conventional PWM (pulse width modulation) controllers, it regulates the output voltage in a new method of off-time modulation control. The controller consists of a VCO (voltage control oscillator), Sense and logic circuit, VDD pin, under-voltage lockout circuit, over-voltage protection, current limited circuit, leading edge blanking, over load protection and fault condition auto-restart. They are ideal low power AC/DC adapter/charger for cell phones.