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AL1666

更新时间： 2024-09-20 14:55:39
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美台 - DIODES /
页数 文件大小 规格书
16页 822K
描述
HIGH PERFORMANCE DIMMABLE LED CONTROLLER

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AL1666  
HIGH PERFORMANCE DIMMABLE LED CONTROLLER  
Description  
Pin Assignments  
The AL1666 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 THD under  
universal input voltage.  
(Top View)  
ADIM  
8
1
2
3
4
FB  
PWMD  
VCC  
7
6
5
The AL1666 can support analog/PWM dimming modes. When a 0 to  
2.4V DC signal is applied on ADIM pin, the device will operate in  
analog dimming mode; when a digital signal is applied on PWMD pin  
and the ADIM pin is connected with hundreds of nF capacitors, the  
device will work at PWM-to-DC dimming mode. The dimming range is  
1% to 100%.  
OUT  
GND  
COMP  
CS  
The AL1666 has rich protection features. It integrates multiple  
protections including Under Voltage Lock Out (UVLO), Output Over  
Voltage Protection (OVP), Output Short Circuit Protection (OSP),  
Over Current Protection (OCP), Winding Short Circuit, Secondary  
Diode Short, Internal Thermal Fold-Back Protection (TFP) and Over  
Temperature Protection (OTP).  
SO-8 (Standard)  
Applications  
General LED Lighting Driver with Dimming Function  
0 to 10V Dimming Luminaires  
General Purpose Constant Current Source  
Smart LED Lighting  
The AL1666 is available in SO-8 (Standard) package.  
Features  
Primary Side Regulation without Opto-Coupler  
Valley Switching for Low Switching Loss  
Support Analog and PWM-to-DC Dimming  
Analog/PWM-to-DC Dimming Range: 1% to 100%  
Tight CS Reference Voltage 0.4V±1.5%  
High PF>0.9 and Low THD<20%  
High Efficiency  
Internal Protections  
.
Under Voltage Lock Out (UVLO)  
Output Over Voltage Protection (OVP)  
Output Short Protection (OSP)  
.
.
.
.
.
.
.
Over Current Protection (OCP)  
Winding Short Circuit Protection  
Secondary Diode Short Protection  
Internal Thermal Fold-back Protection (TFP)  
Over Temperature Protection (OTP)  
Tight LED Current Variation Range  
LED Current Line Regulation: ±2% (90VAC to 305VAC  
)
LED Current Load Regulation: ±2% Full Load to Half Load  
Package: SO-8 (Standard)  
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  
Halogen and Antimony Free. “Green” Device (Note 3)  
For automotive applications requiring specific change  
control (i.e. parts qualified to AEC-Q100/101/200, PPAP  
capable, and manufactured in IATF 16949 certified facilities),  
please contact us or your local Diodes representative.  
https://www.diodes.com/quality/product-definitions/  
Notes:  
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.  
2. See https://www.diodes.com/quality/lead-free/ 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.  
1 of 16  
www.diodes.com  
December 2019  
© Diodes Incorporated  
AL1666  
Document number: DS42417 Rev. 1 - 2  
1234567...16

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