AL1663 Datasheet, PDF (1/15 Pages) Diodes Incorporated – SINGLE STAGE DIMMABLE LED CONTROLLER

AL1663/AL1663R
UNIVERSAL FLYBACK AND BUCK-BOOST
SINGLE STAGE DIMMABLE LED CONTROLLER
Description
The AL1663/AL1663R is a high performance single stage Flyback
and Buck-boost controller, targeting dimmable LED lighting
application. It is a primary side regulation (PSR) controller which can
provide accurate constant current (CC) regulation without opto-
coupler and secondary control circuitry. It is operating at BCM mode
which results in good EMI and efficiency, and keeps high PF and low
total harmonic distortion (THD) under universal input voltage.
The AL1663/AL1663R can support multiple dimming modes. When a
0.3 to 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. And for AL1663 When
a digital signal is applied on PWMD pin and the APWM pin is
connected with a hundreds of nF capacitor, the device will work in
PWM-to-DC dimming mode.
The AL1663/AL1663R features low start-up current and low operation
current. It integrates multiple protections including over voltage, short
circuit, over current and over temperature protection.
Pin Assignments
(Top View)
APWM 1
PWMD 2
COMP ³
CS 4
8 FB
7 VCC
6 OUT
5 GND
NC 1
FB 2
CS ³
GND 4
8 APWM
7 COMP
6 VCC
5 OUT
AL1663
SO-8
AL1663R
SO-8
Applications
 General LED Lighting Driver with Dimming Function
 General Purpose Constant Current Source
 LED Backlighting Driver
 Smart LED Lighting
The AL1663/AL1663R is available in SO-8 package.
Features
 Primary Side Regulation without Opto-coupler
 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
 Support both PWM Dimming and Analog Dimming
 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-8
 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
 Halogen and Antimony Free. “Green” Device (Note 3)
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.
AL1663/AL1663R
Document number: DS38466 Rev. 1 - 2
1 of 15
www.diodes.com
May 2016
© Diodes Incorporated