Single Stage Dimmable Buck Converter with 600V/4A MOSFET
The AL1672 is a hig-hperformance single stage Buck convertor, targeting dimmable LED lighting applications. It operates at BCM mode which results in good EMI and efficiency.
The AL1672 can support multiple dimming modes. When a 0.3~2.4V DC signal is applied on APWM pin, the device will operate in analog dimming mode. When a digital signal is applied on APWM pin, the device works at PWM dimming mode.
The Diodes Advantage
The AL1672 is a high-performance single stage Buck converter
with built-in MOSFET for PWM/Analog dimming applications.
◾ Highly integrated converter in SO-8EP package
Low BOM cost solution
◾ Built-in 4A/600V MOSFET
Small size and simple circuit design
◾ Supports both PWM and Analog dimming
Can be dimmed by a PWM signal or a DC voltage
◾ SO-8EP Package
Better thermal performance
◾ High PF and low THD
PF > 0.9, THD < 20%
◾ Built-in Undervoltage Lock-out, Output Open-Circuit Protection,
Output Overvoltage Protection, Output Short-Circuit Protection,
Thermal Foldback Protection and Over-Temperature Shutdown
Provides a complete protection function
Circuit Functions
◾ General LED Lighting Driver with Dimming Function
◾ General Purpose Constant Current Source
◾ Smart LED Lighting