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| TAIYO YUDEN LS655 Model LCD Backlight Driver 12 Volt Input Dual Tube CCFT Inverter Brightness Control Physical Specifications Dimensions: Operating Temp: Relative Humidity: Storage: Impact Resistance: Vibration Resistance: 105mm x 25mm x 10mm (4.13" x 0.98" x 0.39") 0 to 60C, convection cooling 20% to 90%, non-condensing -20 to 85C/5-95% RH 50G half wave per 2 msec 10-55-10 Hz/min @ 1.5mm (4W) RoHS COMPLIANT Input Specifications* Item Condition Standard Input Voltage Rated Tolerance Max. Input Current Max. Input Power DC-Bright DC-Resistor *Above Specifications Occur @ 25 5C -- Continuous Operation Starting Condition (Discharge Starting Voltage) VIN = 5 Vdc Luminance @ Max. VIN = 5 Vdc Luminance @ Max. IOUT = Max IOUT = Min IOUT = Max IOUT = Min 5 Vdc 4.75 V - 5.25 V 4.75 V - 5.25 V 950 mA Typ. 4.8 W 1.9 V 1.5 V 10 k 0 k Output Specifications* Item Condition Standard MIN TYP MAX Output Voltage (Vrms) Tube Current for per Lamp (mArms) Max. Power Output for 2 Lamps (W) Ignition Frequency (kHz) *Above specifications occur @ 25 5C. VIN = 5 Vdc Luminance @ Max.(VBR = 1.9 V @ 10 k) Luminance @ Min. (VBR = 1.5 V @ 0 k) VIN = 5 Vdc/Luminance @ Max. Luminance @ Max. -- -- -- -- -- 1000 5.2 2.2 4.0 55 -- -- -- -- -- Model LS655 Luminance Variance Item Condition Applied Voltage Output Current Luminance @ Max. Luminance @ Min. Btwn. pin 6 and GND, or pin 5 & 6 Btwn. pin 6 and GND, or pin 5 & 6 Vbr = 1.9 V or 10 k Vbr = 1.5 V or 0 k 5.2 mA (one lamp) 2.2 mA (one lamp) (c) Copyright 2006 TAIYO YUDEN (U.S.A.), INC. Specifications subject to change without notice. TAIYO YUDEN (U.S.A.), INC. 1770 La Costa Meadows Drive, San Marcos, CA 92078 (760) 510-3200 / Fax: (760) 471-4021 (800) 493-6835 www.t-yuden.com powerproducts@t-yuden.com FM 32227 Model LS655 Tech Notes Connection Diagram DC Bright Control Method* Maximum output current can be adjusted by applying bias voltage or using a variable resistor as shown below. 1 GND 2 GND 5 Vdc 5 Vdc 1 GND 2 GND 3 VIN 4 Variable Resistor (0-10 k 20%-100%) 3 4 DC Voltage Bias (1.5-1.9 Vdc 20%-100%) VIN VIN VBRL VBRH VIN VBRL VBRH 5 6 5 6 dimming by applying DC bias voltage dimming by using a variable resistor 1 GND 2 GND 5 Vdc 3 4 5 6 VIN VIN VBRL VBRH preset to maximum brightness (continuous) (c) Copyright 2006 TAIYO YUDEN (U.S.A.), INC. Specifications subject to change without notice. TAIYO YUDEN (U.S.A.), INC. 1770 La Costa Meadows Drive, San Marcos, CA 92078 (760) 510-3200 / Fax: (760) 471-4021 (800) 493-6835 www.t-yuden.com powerproducts@t-yuden.com FM 32227 |
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