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AL1663

UNIVERSAL FLYBACK AND BUCK-BOOST SINGLE STAGE DIMMABLE LED CONTROLLER



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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
APWM 1
PWMD 2
COMP 3
CS 4
(Top View)
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



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AL1663 pdf
AL1663/AL1663R
Typical Applications Circuit
AC
Input
F1
VR1
DB1
L1
C1 C2
RTH
T1
C5
R10
D2
Aux R4 D1
Cvcc
R5 D4
VCC PWMD APWM
FB OUT
AL1663
R9
R6 COMP
Rcomp
GND
CS
U1
Ccomp
Q1
RCS
C7 R14
D3 +
C6
OUT
AC
Input
F1
VR1
DB1
AL1663 Flyback Application Circuit
L1
C1 C2 RTH
T1
R11 C6
OUT
Aux R4 D1
Cvcc
R5 D4
VCC PWMD APWM
FB OUT
AL1663
R9
R6 COMP
Rcomp
GND
CS
Ccomp
D3
Q1
RCS
AC
Input
F1
VR1
DB1
AL1663 Buck-Boost Application Circuit
L1
C1 C2
RTH
T1
C5
R10
D2
Aux R4 D1
Cvcc
R5 D4
VCC NC APWM
FB OUT
AL1663R
R9
R6 COMP
Rcomp
GND
CS
U1
Ccomp
Q1
RCS
C7 R14
D3 +
C6
OUT
AL1663R Flyback Application Circuit
AL1663/AL1663R
Document number: DS38466 Rev. 1 - 2
2 of 15
www.diodes.com
May 2016
© Diodes Incorporated



Part Number AL1663
Description UNIVERSAL FLYBACK AND BUCK-BOOST SINGLE STAGE DIMMABLE LED CONTROLLER
Maker Diodes - Diodes
Total Page 15 Pages
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