CCFL-Inverter SCF-0272 ( For 2W ✕ 1 Lamp ) ■Features ●Built in On/Off control function ●It's possible to dim with external PWM signal, applying On/Off function. ●Applications: LCD size 7 to 8 inches for monitor Suitable Sanken's CCFL: Lamp length 160 to 180 mm : Exterior Diameter φ1.8mm 86.0± 0.5 14.5± 0.2 CN1 Top View φ2.4 CN2 5.5 max Side View 10.0± 0.5 4.5± 0.1 ■Outline PWB (Printed wiring board): FR-4 or CEM-3 (t =0.8) Weight: 5.3g typ Unit : mm ■Connector terminal number and Function Connector No. CN1 (Input) CN 2 (Output) Terminal No. Symbol Function 1 VIN DC input voltage 2 GND Power GND 3, 4 Vbr On-Off/dimming control 5 S-GND Signal-GND 1 Lamp-H Output high side 2 Lamp-L Output low side Connector type name/Manufacturer CHP2705-0101/SMK SM02B-BHSS-TB/JST SCF-0272 ■Application CN1 1 VIN 3,4 Vbr H 5V CN2 SW D L 2 GND 5 S-GND Lamp-H 1 Lamp-L 2 RL Cold-Cathode Fluorescent Lamp TTL pulse 100 to 500Hz SW H: enable 2.5V to VIN L : disable 0 to 0.5V D: dimming Inverter Unit ■Absolute maximum ratings Parameter Symbol Ratings Unit DC input voltage VIN 0 to 8 V Control signal voltage Vbr 0 to 5.5 V Output power PL 2.3 W Operating temp. Topr 0 to 60 °C Storage temp. Tstg – 20 to 80 °C Humidity RH 95 %RH ■Electrical characteristics Remarks Maximum wet-bulb temp. 38°C No dew condensation Conditions: at Topr=25°C, VIN=5V (unless otherwise stated) min Ratings typ max Parameter Symbol Input DC voltage VIN 4.75 5 5.25 V Input current IIN — — 700 mA VIN=5V Driving frequency fsw 50 — 60 kHz RL=90kΩ Output current IL — 4.7 — mArms RL=90kΩ — 5.0 — mArms RL=80kΩ Dimming control frequency fPWM 100 — 500 Hz External signal TTL Output Power PL — 2.0 — W RL =80kΩ Open voltage VO 1000 1100 — Vrms Unit Remarks VIN = 4.75V, RL=100MΩ