Diodes' AL1673 is a high performance single stage flyback/buck-Boost converter targeting dimmable LED lighting application. It operates at boundary conduction mode (BCM) mode which results in good EMI and efficiency.

The AL1673 can support multiple dimming modes. When a 0.3 V_DC to 2.4 V_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 600 V/2 A high voltage MOSFET.

The AL1673 is available in SO-8EP package.

Diodes Advantage

The AL1673 is a high-performance single-stage converter with built-in MOSFET for PWM/analog dimming applications.

• Highly-integrated converter in SO-8EP package: low BOM cost solution
• Built-in 2 A/600 V 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