LS680-1

TAIYO YUDEN LS680-1 M odel LCD Backlight Driver 12 Volt Input Four Tube CCFT Inverter Brightness Control ( 8W) ( PWM Dimming 30-100%) Physical Specifications Dimensions: Operating Temp: Relative Humidity: Storage: Impact Resistance: Vibration Resistance: 160mm x 30mm x 10mm (6.299" x 1.181" x 0.39") 0 to 60°C, convection cooling 20% to 90%, non-condensing -20 to 85°C/5-95% RH 50G half wave per 2 msec 10-55-10 Hz/min @ 1.5mm Input Specifications* Item Condition Standard Input Voltage Rated Tolerance Max. Input Current Max. Input Power On/Off Input Current — Continuous Operation Starting Condition (Discharge Starting Voltage) VIN = 12 Vdc Luminance @ Max. VIN = 12 Vdc Luminance @ Max. On VCONT = 2.0 – Vcc Off VCONT = GND-0.8 Vdc 12 Vdc 10.8 Vdc - 13.2 Vdc 10.8 Vdc - 13.2 Vdc 2.0 A 24 W IMAX = 4.0 mA IMAX = 50 µA *Above Specifications Occur @ 25 ± 5ºC Output Specifications* Item Condition Standard MIN TYP MAX Output Voltage (Vrms) Tube Current for 2 Lamps (mArms) Max. Power Output for 2 Lamps (W) Ignition Frequency (kHz) VIN = 10.8 Vdc Luminance @ Max.(VCONT = 3.8 V) Luminance @ Min. (VCONT = 2.0 V) VIN = 12 Vdc/Luminance @ Max. Luminance @ Max. 1500 12.5 — — 50 1650 14.0 7.5 — 60 — 15.5 — 8.0 70 *Above specifications occur @ 25 ± 5ºC & VIN = 10.8 - 13.2 Vdc. M odel 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) 4 (0.157) 80 (3.15) CN3 10 (0.394) CN2 5 (0.197) 10 (0.394) 10 (0.394) CN1 5 (0.197) 10 (0.394) 3—¿3.6 (0.142) 10MAX (0.394MAX) 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 powerproducts@t-yuden.com PQAA REF.1612 1.0TYP (0.039TYP) FM 32227 30 (1.181) M odel LS680-1 Tech Notes Connection Diagram LS680-1 Input Connector CN1 Hirose DF13-8P-1.25H 1 2 3 4 5 6 7 8 V(in) V(in) On/Off Bright DC Bright Duty S-GNG GND GND Output Connector CN2, CN3 JST SM04 (4.0) B-BHS CCFT HIGH 1 2 CCFT HIGH 3 NC 4 CCFT LOW CCFT HIGH CCFT HIGH NC CCFT LOW 1 2 3 4 CN2 CCFT INVERTER 12 Vdc 0/5 Vdc PWM 0/5 Vcc CCFT CN3 Corresponding Housing: Hirose DF13-8S-1.25C Corresponding Housing: JST BHR-04VS-1 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). DC Bias Lamp Current (2 lamps) 1 2 V(in) V(in) Brightness Control DC Bias (2-3.8 Vdc) 3 On/Off 4 5 6 7 8 Bright DC 16.00 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 Bright Duty 14.00 S-GND GND 12.00 10.00 Lamp Current GND 8.00 6.00 4.00 2.00 0.00 1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 4.0 * Above specifications occur @ 25 ± 5ºC, with pin 5 connected to GND, and VIN = 12 Vdc. 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 powerproducts@t-yuden.com PQAA REF.1612 FM 32227