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Off-line LED drivers AL99100 pages
AL9910/ AL9910A/ AL9910-5
UNIVERSAL HIGH VOLTAGE HIGH BRIGHTNESS LED DRIVER
Description
Pin Assignments
(Top View)
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
8 ROSC
VIN 1
CS 2
GND 3
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
AL9910
GATE 4
constant light output. The output current is programmed by one
external resistor and is ultimately determined by the external
7 LD
6 VDD
5 PWM_D
SO-8
MOSFET chosen and therefore allows many low current LEDs to be
driven as well as a few high current LEDs.
(Top View)
The LED brightness can be varied by both Linear and PWM dimming
8 ROSC
VIN 1
using the AL9910’s LD and PWM_D pins respectively. The PWM_D
CS 2
GND 3
GATE 4
input operates with duty ratio of 0-100% and frequency of up to
several kHz.
The AL9910 can withstand input voltages up to 500V which makes it
AL9910
7 LD
6 VDD
5 PWM_D
very resilient to transients at standard mains voltages. As well as
SO-8EP
standard SO-8 package the AL9910 is available in the thermally
enhanced SO-8EP package.
Applications
Features
•
•
•
Signage and Decorative LED Lighting
•
Back Lighting of Flat Panel Displays
•
7.5V MOSFET drive – AL9910
High Voltage DC-DC LED Driver
•
Internal Voltage Regulator Removes Start-Up Resistor
LED Offline Lamps
•
Input Voltage Up to 500V
•
•
>90% Efficiency
Universal Rectified 85 to 277VAC Input Range
General Purpose Constant Current Source
10V MOSFET drive – AL9910A
•
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)
•
Available in SO-8 and SO-8EP Packages
•
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 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.
AL9910/ AL9910A/ AL9910-5
Document number: DS35103 Rev. 8 - 2
1 of 15
www.diodes.com
December 2012
© Diodes Incorporated
