Diodes - AL1673 - Universal Flyback and Buck-Boost Single Stage Dimmable LED Driver

Diodes – AL1673 – Universal Flyback and Buck-Boost Single Stage Dimmable LED Driver

The AL1673 is a high-performance single stage LED Driver-converter operating in Flyback and Buck-Boost topologies, targeting dimmable LED lighting applications. It operates in BCM mode which results in good EMI and efficiency.

The AL1673 supports 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 operating current. It integrates multiple protection functions including overvoltage, short-circuit, overcurrent and over-temperature protection.

The AL1673 has a built-in 600V/2A high-voltage MOSFET and is available in SO-8EP package.

Advantages

Highly-integrated converter in SO-8EP package – Low BOM cost solution
Built-in 2A/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 Over-voltage Protection, Output Short-Circuit Protection, Thermal Foldback Protection and Over-Temperature Shutdown – Provides a complete protection function

Applications