Off Line AC/DC Switch
BYD Microelectronics Co., Ltd.
BF1501 Series
Off Line AC/DC Switcher IC
General Description
The THC0X switcher ICs cos...
Description
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.
Applications
AC/DC adapter/charger for cell/cordless phones,
digital cameras, MP3/portable audio devices etc
LED Lighting
Replacements for linear transformers and RCC
SMTPS
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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