Diodes Incorporated introduced the AL1673. 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 0.3~2.4 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 operating current. It integrates multiple protection functions including overvoltage, short-circuit, overcurrent and over-temperature protection.
The AL1673 has a built-in 600 V/2 A high-voltage MOSFET and is available in SO-8EP package.
Application
- General LED Lighting Driver with Dimming Function
- General Purpose Constant Current Source
- Smart LED Lighting
Features
- Valley Switching for Low Switching Loss
- Low Start-Up Current
- High PF and Low THD
- High Efficiency
- Tight LED Current Variation Range
- Tight Output Open Voltage Variation Range
- Integrates 600 V/2 A MOSFET
- Support Both PWM Dimming and Analog Dimming
- PWM Dimming Range: 3% to 100% at 1 kHz PWM Frequency
- Analog Dimming and PWM-to-DC Dimming Range: 18% to 100%
- Internal Protections
- Under Voltage Lock Out (UVLO)
- Output Over Voltage Protection (OVP)
- Output Short Protection (OSP)
- Over Current Protection (OCP)
- Thermal Fold-back Protection (TFP)
- Over Temperature Protection (OTP)
- Low System Cost
- Package: SO-8EP
