UNIVERSAL FLYBACK AND BUCK-BOOST
SINGLE STAGE DIMMABLE LED DRIVER
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.
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
Analog Dimming and PWM-to-DC Dimming Range:18%
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
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
General LED Lighting Driver with Dimming Function
General Purpose Constant Current Source
Smart LED Lighting
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Document number: DS39540 Rev. 1 - 2
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