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The AL1673 is a high performance single stage Flyback/Buck-Boost converter, targeting dimmable LED lighting application. It is operating at BCM mode which results in good EMI and efficiency.
The AL1673 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 AL1673 features low start-up current and low operation current. It integrates multiple protections including over voltage, short circuit, over current and over temperature protection. It also integrates 600V/2A high voltage MOSFET.
The AL1673 is available in SO-8EP package.
General LED Lighting Driver with Dimming Function
General Purpose Constant Current Source
Smart LED Lighting
Valley Switching for Low Switching Loss
Low Start-Up Current
High PF and Low THD
Tight LED Current Variation Range
Tight Output Open Voltage Variation Range
Integrates 600V/2A MOSFET
Support Both PWM Dimming and Analog Dimming
PWM Dimming Range: 3% to 100% at 1kHz PWM Frequency
Analog Dimming and PWM-to-DC Dimming Range: 18% to 100%