UNIVERSAL HIGH POWER FACTOR BUCK LED DRIVER
The AL1676 is a universal AC input (85~277 VAC), high power factor
(PF) and high efficiency Buck LED driver. The AL1676 topology
provides accurate constant current (CC) with good line and load
regulation, operating at boundary conduction mode (BCM) to ease in
EMI/EMC qualification and testing to meet the latest regulatory laws.
The AL1676 single Buck stage driver works with a single winding
inductor and High voltage MOSFET included, therefore, can use
fewer external components and create a low bill of material (BOM)
cost solution. The AL1676 has rich protection features to enhance
system safety and reliability, including under voltage lock out (UVLO),
LED open/short, over voltage, over current, over temperature
protection and thermal fold-back function which can reduce output
current when the driver’s temperature is higher than the setting value.
The AL1676 is available for SO-7 package.
Universal 85 to 277 VAC Input Range
Multiple Options for Internal MOSFET
Tight Output Current Tolerance: ±3%
Low Startup Current: 100µA
Low Operation Current: 170µA (5KHs Switching)
Single Winding Inductor
Under Voltage Lock Out (UVLO)
Leading-Edge Blanking (LEB)
Cycle-by-cycle Over Current Protection (OCP)
Output Open/Short Protection (OVP/OSP)
Thermal Fold-back Protection (TFP)
Over Temperature Protection (OTP)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Retrofit LED Lamps
High Voltage DC-DC LED Driver
General Purpose Constant Current Source
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: DS38290 Rev. 1 - 2
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