SCF-0274

CCFL-Inverter sFeatures qFor SCF-0274 ( For 4.7W ✕ 2 Lamps ) CCFL 2 lamps qBuilt in On/Off control function qRegulated qBuilt lamp current in PWM Mode dimming control circuit. qApplications: LCD size 15 inches for monitor Suitable Sanken's CCFL: Lamp length 300 to 340 mm : Exterior Diameter φ2.6mm sOutline 180.0 ± 0.5 (3.5) 80 .0 ± 0.2 66.5± 0.2 18± 0.2 CN3 CN1 CN2 3- φ3.0 Side View PWB (Printed wiring board): FR-4 or CEM-3(t =1.0) Weight: 29.6g typ Unit : mm sConnector terminal number and Function Connector No. Terminal No. 1 2 CN 1 (Input) 3 4 5 CN 2 (Output 1) CN 3 (Output 2) 1 3 1 3 Symbol VIN GND Vbr N. C Vrmt Lamp1-H Lamp1-L Lamp 2-H Lamp 2-L On-Off control Output 1 high side Output 1 low side Output 2 high side Output 2 low side SM02(8.0) B-BHS-TB/JST SM02(8.0)B-BHS-TB/JST Function DC input voltage GND Dimming control S5B-PH-SM3-TB/JST Connector type name/Manufacturer 8.0max 25± 0.5 Top View (3.5) SCF-0274 sApplication CN1 12V H SW 5 L 0 to 2.5V SW H: enable 2.5V to VIN L : disable 0 to 0.5V 2 3 Vrmt GND Vbr Lamp-L 3 Cold-Cathode Fluorescent Lamp 1 VIN Lamp-H CN2, 3 1 RL Inverter Unit sAbsolute maximum ratings Parameter DC input voltage On-Off voltage Dimming voltage Output power Operating temp. Storage temp. Humidity Symbol VIN Vrmt Vbr PL Topr Tstg RH Ratings 0 to 14.4 0 to 14.4 0 to 3.0 5.0 0 to 60 – 20 to 80 95 Unit V V V W °C °C %RH Maximum wet-bulb temp. 38°C No dew condensation Per 1 lamp Remarks sElectrical characteristics Parameter DC input voltage Input current Driving frequency Output current Dimming control frequency Output Power Open voltage Symbol VIN IIN fsw IL fPWM PL VO min 10.8 — 50 — — 240 — 1500 4.7 — Ratings typ 12 — 55 8.0 2.5 Conditions : at Topr=25°C, VIN=12V (unless otherwise stated) max 13.2 1500 60 — — 300 — — Unit V mA kHz mArms mArms Hz W Vrms RL=73kΩ VIN=12V RL=73kΩ Remarks Per 1 lamp RL=73kΩ, Vbr=0V Per 1 lamp RL=73kΩ, Vbr=2.5V VIN=10.8V, RL=100MΩ sDimming characteristics 9.0 PWM Dimming Vbr=0 to 0.65V ➝ Duty 100% 8.0 6.0 4.0 2.0 0.0 0.0 Output Current (mArms) 0.5 1.0 1.5 2.0 2.5 3.0 Dimming voltage (Vbr)