Product Summary

The BIT3713 is a low cost PWM CCFL controller. To aim at the cold cathode fluorescent lamp applications, the BIT3713 integrated all functions required in a single 8 pin chip, The chip provides a fully functioned PWM control circuit with a ture lamp current feedback protection. The applications of the BIT3713 are cold cathode fluorescent lamps system, notebook PC, LCD monitor, palm-top computers, video phone/door pohne, portable instrumentation, personal digital assistants, airline entertainment centers, automotive display, ATM/financial terminal, POS terminal, navigation devices, test equipment, copiers and office equipment, medical equipment.

Parametrics

BIT3713 absolute maximum ratings: (1)VDD: -0.3V to +9.0V; (2)GND: ±0.3V; (3)input voltage: -0.3V to VDD+0.3V; (4)operating ambit temperature: 0℃ to +70℃; (5)operating junction temperature: +150℃; (6)storage temperature: -55℃ to +150℃.

Features

BIT3713 features: (1)PWM modulation; (2)open lamp protection; (3)internal UVLO(under voltage lock out) function; (4)dimming control; (5)CMOS totem pole output; (6)NMOS output driving; (7)SOP/DIP packing.

Diagrams

BIT3713 block diagram