TAIYO YUDEN LS655-RH RoHS LCD Backlight Driver Model 5 Volt Input Dual Tube CCFT Inverter COMPLIANT (4W) Brightness Control Physical Specifications Dimensions: 105mm x 25mm x 10mm (4.13" x 0.98" x 0.39") Operating Temp: 0 to 60C, convection cooling Relative Humidity: 20% to 90%, non-condensing Storage: -20 to 85C/5-95% RH Impact Resistance: 50G half wave per 2 msec Vibration Resistance: 10-55-10 Hz/min @ 1.5mm Input Specifications* Item Condition Standard -- Continuous Operation Starting Condition (Discharge Starting Voltage) 5 Vdc 4.75 V - 5.25 V 4.75 V - 5.25 V Max. Input Current VIN = 5 Vdc Luminance @ Max. 950 mA Typ. Max. Input Power VIN = 5 Vdc Luminance @ Max. 4.8 W DC-Bright IOUT = Max IOUT = Min 1.9 V 1.5 V DC-Resistor IOUT = Max IOUT = Min 10 k 0 k Input Voltage Rated Tolerance *Above Specifications Occur @ 25 5C Output Specifications* Item Condition Standard MIN TYP MAX Output Voltage (Vrms) VIN = 5 Vdc -- 1000 -- Tube Current for per Lamp (mArms) Luminance @ Max.(VBR = 1.9 V @ 10 k) Luminance @ Min. (VBR = 1.5 V @ 0 k) -- -- 5.2 2.2 -- -- Max. Power Output for 2 Lamps (W) VIN = 5 Vdc/Luminance @ Max. -- 4.0 -- Ignition Frequency (kHz) Luminance @ Max. -- 55 -- *Above specifications occur @ 25 5C. Model LS655-RH Luminance Variance Item Condition Applied Voltage Luminance @ Max. Btwn. pin 6 and GND, or pin 5 & 6 Vbr = 1.9 V or 10 k Output Current 5.2 mA (one lamp) Luminance @ Min. Btwn. pin 6 and GND, or pin 5 & 6 Vbr = 1.5 V or 0 k 2.2 mA (one lamp) (c) Copyright 2007 TAIYO YUDEN (U.S.A.), INC. Specifications subject to change without notice. TAIYO YUDEN (U.S.A.), INC. 440 Stevens Avenue, Suite 300 Solana Beach, CA 92075 (858) 350-6800 / Fax: (858) 350-6854 (800) 263-4532 www.t-yuden.com inverters@t-yuden.com FM 32227 Model LS655-RH Tech Notes Connection Diagram LS655-RH DC Bright Control Method* Maximum output current can be adjusted by applying bias voltage or using a variable resistor as shown below. 1 GND 1 GND 2 GND 5 Vdc 2 GND 5 Vdc DC Voltage Bias (1.5-1.9 Vdc 20%-100%) 3 VIN 3 VIN 4 VIN 4 VIN 5 VBRL 5 VBRL 6 VBRH 6 VBRH Variable Resistor (0-10 k 20%-100%) dimming by applying DC bias voltage dimming by using a variable resistor 1 GND 2 GND 5 Vdc 3 VIN 4 VIN 5 VBRL 6 VBRH preset to maximum brightness (continuous) (c) Copyright 2007 TAIYO YUDEN (U.S.A.), INC. Specifications subject to change without notice. TAIYO YUDEN (U.S.A.), INC. 440 Stevens Avenue, Suite 300 Solana Beach, CA 92075 (858) 350-6800 / Fax: (858) 350-6854 (800) 263-4532 www.t-yuden.com inverters@t-yuden.com FM 32227