AL9902S16-13

AL9902 LINEAR AND PWM DIMMING HIGH VOLTAGE LED DRIVER Description Pin Assignments The AL9902 high-voltage PWM LED driver provides an efficient solution for offline high-brightness LED lamps from rectified line voltages ranging from 85VAC up to 277VAC. The AL9902 has an SW NC SO GND CS VIN 12 11 10 9 8 77 internal MOSFET that allows switching frequencies up to 300kHz, with the switching frequency determined by an external single resistor. The AL9902 topology creates a constant current through the LEDs providing constant light output. The output current is programmed by one external resistor. EP1 The LED brightness can be varied by both linear and PWM dimming using the AL9902’s LD and PWM pins respectively. The PWM input operates with duty ratio of 0-100% and frequency of up to several kHz. 11 2 NC NC EP2 3 4 PWM VDD 5 66 LD Rosc U-DFN6040-12 The AL9902 is available in the thermally enhanced U-DFN6040-12 and SO-16 packages. NC SO NC 16 15 14 1 2 NC NC NC GND CS 13 12 11 10 NC 3 4 5 6 7 SW NC PWM VDD VIN 9 Features   >90% Efficiency Universal Rectified 85 to 277VAC Input Range           Internal MOSFET Up to 650V, 2A High Switching Frequency Up to 300kHz Internal Voltage Regulator Removes Start-Up Resistor 7.5V Regulated Output Tighter Current Sense Tolerance Better Than ±5% LED Brightness Control with Linear and PWM Dimming Internal Over-Temperature Protection (OTP) U-DFN6040-12 and SO-16 Packages Totally Lead-Free & Fully RoHS compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes: LD 8 Rosc SO-16 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