AL1676

Document number: DS38290 Rev. 1 - 2

1 of 15

www.diodes.com

February 2016

© Diodes Incorporated

AL1676

UNIVERSAL HIGH POWER FACTOR BUCK LED DRIVER

Description

(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.

Features



>90% Efficiency





Multiple Options for Internal MOSFET



Tight Output Current Tolerance: ±3%



Low Startup Current: 100µA



Low Operation Current: 170µA (5KHs Switching)



Single Winding Inductor



Internal Protections:



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)



SO-7 Package



Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)



Halogen and Antimony Free

. “Green” Device (Note 3)

Pin Assignments

(Top View)

1

2

3

4

7

6

5

VCC

ROVP

COMP

GND

CS

D

NC

SO-7

Applications



Retrofit LED Lamps



LED Tube



High Voltage DC-DC LED Driver



General Purpose Constant Current Source

Notes:

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"

and Lead-free.

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.