TAIYO YUDEN LS680-1 LCD Backlight Driver Model 12 Volt Input Four Tube CCFT Inverter Brightness Control (8W) (PWM Dimming 30-100%) Physical Specifications Dimensions: 160mm x 30mm x 10mm (6.299" x 1.181" x 0.39") Operating Temp: 0 to 60°C, convection cooling Relative Humidity: 20% to 90%, non-condensing Storage: -20 to 85°C/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) 12 Vdc 10.8 Vdc - 13.2 Vdc 10.8 Vdc - 13.2 Vdc Max. Input Current VIN = 12 Vdc Luminance @ Max. 2.0 A Max. Input Power VIN = 12 Vdc Luminance @ Max. 24 W On/Off Input Current On VCONT = 2.0 – Vcc IMAX = 4.0 mA Off VCONT = GND-0.8 Vdc IMAX = 50 µA Input Voltage Rated Tolerance *Above Specifications Occur @ 25 ± 5ºC Output Specifications* Item Condition Standard MIN TYP MAX Output Voltage (Vrms) VIN = 10.8 Vdc 1500 1650 — Tube Current for 2 Lamps (mArms) Luminance @ Max.(VCONT = 3.8 V) Luminance @ Min. (VCONT = 2.0 V) 12.5 — 14.0 7.5 15.5 — Max. Power Output for 2 Lamps (W) VIN = 12 Vdc/Luminance @ Max. — — 8.0 Ignition Frequency (kHz) Luminance @ Max. 50 60 70 *Above specifications occur @ 25 ± 5ºC & VIN = 10.8 - 13.2 Vdc. Model LS680-1 Luminance Variance Item Condition Applied Voltage Output Current Luminance @ Max. Btwn. pin 4 & 6 Vcont = 3.8 V 14 mA (2 lamps) Luminance @ Min. Btwn. pin 4 & 6 Vcont = 2.0 V 7.5 mA (2 lamps) Luminance can also be controlled by applying PWM signal to pin 5 (pin 4 must be connected to GND). 160 (6.299) 30 (1.181) CN2 CN3 10 (0.394) 4 (0.157) 80 (3.15) 10 (0.394) 5 (0.197) 10 (0.394) CN1 5 (0.197) 3—¿3.6 (0.142) 1.0TYP (0.039TYP) 10MAX (0.394MAX) 10 (0.394) Units: mm (inches) No Pattern and No Componet Area (except GND pattern) © Copyright 2000 Taiyo Yuden (U.S.A.), Inc. Specifications subject to change without notice. world leaders in materials and electronics technology Taiyo Yuden (U.S.A.), Inc. 1770 La Costa Meadows Drive, San Marcos, CA 92069 (760) 510-3200 / Fax: (760) 471-4021 (800) 493-6835 www.t-yuden.com [email protected] PQAA REF.1612 FM 32227 Model LS680-1 Tech Notes Connection Diagram LS680-1 Output Connector CN2, CN3 JST SM04 (4.0) B-BHS CCFT HIGH 1 2 CCFT HIGH 3 NC 4 CCFT LOW Input Connector CN1 Hirose DF13-8P-1.25H 0/5 Vdc PWM 0/5 Vcc V(in) V(in) On/Off Bright DC Bright Duty S-GNG GND GND INVERTER 12 Vdc 1 2 3 4 5 6 7 8 CCFT HIGH CCFT HIGH NC CCFT LOW 1 2 3 4 CN2 CCFT CCFT CN3 Corresponding Housing: JST BHR-04VS-1 Corresponding Housing: Hirose DF13-8S-1.25C DC Bright Control Method Maximum output current can be adjusted by applying bias voltage between brightness control pins as shown below. Alternatively, brightness control can be done by applying PWM signal to pin 5 (pin 4 must be tied to GND). Brightness Control DC Bias (2-3.8 Vdc) 1 V(in) 2 V(in) 3 On/Off 4 Bright DC 5 Bright Duty 6 S-GND 7 GND 8 GND DC Bias Lamp Current (2 lamps) 2.0 V 2.2 V 2.4 V 2.6 V 2.8 V 3.0 V 3.2 V 3.4 V 3.6 V 3.8 V 4.0 V 7.51 mA 8.45 mA 9.28 mA 10.05 mA 11.05 mA 11.58 mA 12.30 mA 13.18 mA 14.16 mA 14.21 mA 14.21 mA 16.00 14.00 12.00 Lamp Current 10.00 8.00 6.00 4.00 2.00 0.00 1.8 * Above specifications occur @ 25 ± 5ºC, with pin 5 connected to GND, and VIN = 12 Vdc. 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 4.0 DC Bias (Vdc) On/Off Control The inverter is ON if one of the following conditions are met: • Pin 3 (On/Off) is connected to pin 1/2 (VIN) • Pin 3 (On/Off) = 2 Vdc —Vcc The inverter is OFF if one of the following conditions are met: • Pin 3 (On/Off) is connected to pin 7/8 (GND) • Pin 3 (On/Off) ≤ 0.8 Vdc © Copyright 2000 Taiyo Yuden (U.S.A.), Inc. Specifications subject to change without notice. world leaders in materials and electronics technology Taiyo Yuden (U.S.A.), Inc. 1770 La Costa Meadows Drive, San Marcos, CA 92069 (760) 510-3200 / Fax: (760) 471-4021 (800) 493-6835 www.t-yuden.com [email protected] PQAA REF.1612 FM 32227