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AL9910_1106

更新时间： 2024-11-09 12:20:23
品牌 Logo 应用领域
美台 - DIODES 驱动器高压
页数 文件大小 规格书
15页 336K
描述
UNIVERSAL HIGH VOLTAGE HIGH BRIGHTNESS LED DRIVER

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AL9910_1106 数据手册

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AL9910/AL9910A/AL9910-5  
UNIVERSAL HIGH VOLTAGE HIGH BRIGHTNESS LED  
DRIVER  
Description  
Pin Assignments  
The AL9910/A high voltage PWM LED driver-controller  
provides an efficient solution for offline high brightness LED  
lamps from rectified line voltages ranging from 85VAC up to  
277VAC. The AL9910 drives external MOSFETs at switching  
frequencies up to 300kHz, with the switching frequency  
determined by a single resistor. The AL9910 topology creates  
a constant current through the LEDs providing constant light  
output. The output current is programmed by one external  
resistor and is ultimately determined by the external  
MOSFET chosen and therefore allows many low current  
LEDs to be driven as well as a few high current LEDs  
(Top View)  
1
2
3
4
Rosc  
LD  
8
7
6
5
VIN  
CS  
AL9910  
GND  
Gate  
VDD  
PWM_D  
SO-8  
(Top View)  
The LED brightness can be varied by both Linear and PWM  
dimming using the AL9910’s LD and PWM_D pins  
respectively. The PWM_D input operates with duty ratio of  
0-100% and frequency of up to several kHz.  
1
2
3
4
Rosc  
LD  
8
7
6
5
VIN  
CS  
AL9910  
GND  
Gate  
VDD  
The AL9910 can withstand input voltages up to 500V which  
makes it very resilient to transients at standard mains  
voltages. As well as standard SO-8 package the AL9910 is  
available in the thermally enhanced SO-8EP package.  
PWM_D  
SO8-EP  
Features  
•
•
•
•
>90% Efficiency  
Universal rectified 85 to 277VAC input range  
Input voltage up to 500V  
Applications  
Internal voltage regulator removes start-up resistor  
•
•
•
•
•
LED offline lamps  
High voltage dc-dc LED Driver  
o
o
7.5V MOSFET drive – AL9910  
10V MOSFET drive – AL9910A  
Signage and Decorative LED Lighting  
Back Lighting of Flat Panel Displays  
•
•
•
•
•
•
Tighter current sense tolerance: 5% AL9910-5  
Drives LED Lamps with both high and low current LEDs  
LED brightness control with Linear and PWM dimming  
Internal Thermal Protection (OTP)  
General purpose constant current source  
SO-8 and SO-8EP in “Green” Molding Compound  
(No Br, Sb) with Lead Free Finish/ RoHS Compliant  
(Note 1)  
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at  
http://www.diodes.com/products/lead_free.html.  
Typical Application Circuit  
C3  
L1  
D1  
VIN  
VAC IN  
VDD  
LD  
C1  
Q1  
AL9910/A  
BR1  
GATE  
C2  
CS  
PWM_D  
ROSC  
RSENSE  
GND  
ROSC  
1 of 15  
www.diodes.com  
June 2011  
© Diodes Incorporated  
AL9910/AL9910A/AL9910-5  
Document number: DS 35103 Rev. 3 - 2  
1234567...15

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