AL1672
SINGLE STAGE DIMMABLE BUCK CONVERTER
WITH 600V/4A MOSFET Description Pin Assignments NEW PRODUCT The AL1672 is a high performance single stage Buck convertor,
targeting dimmable LED lighting application. It is operating at BCM
mode which results in good EMI and efficiency. (Top View) 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 AL1672 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/4A high voltage MOSFET. 7 APWM 3 6 FB 4 5 VCC GND 2 DRAIN
DRAIN EP SO-8EP Features Applications п‚ п‚ п‚ п‚ п‚ п‚ п‚ п‚ п‚ п‚ п‚ п‚ п‚ п‚ 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 600V/4A 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%
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) …
