AL9910-5S-13

AL9910/ AL9910A/ AL9910-5/ AL9910A-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. Features • • >90% Efficiency Universal Rectified 85 to 277VAC Input Range • Input Voltage Up to 500V • Internal Voltage Regulator Removes Start-Up Resistor ƒ 7.5V MOSFET Drive – AL9910 ƒ 10V MOSFET Drive – AL9910A • Tighter Current Sense Tolerance: 5% AL9910-5, AL9910A-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: Applications • LED Offline Lamps • High Voltage DC-DC LED Driver • Signage and Decorative LED Lighting • Back Lighting of Flat Panel Displays • General Purpose Constant Current Source 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