LXMG1813-12-62中文资料Legacy Power Management数据手册Microchip规格书

描述 Description

The LXMG1813-12-6x is a Single Output 6W CCFL (Cold Cathode Fluorescent Lamp) Inverter Module designed for the driving LCD backlight lamps for panels in the range of 3.9” to 15”. Utilizing the full-bridge drive topology capabilities of the Microsemi’s highly integrated LX1697 CCFL backlight controller the inverter allows a wider input voltage range (9V to 16.8V) and wider lamp output voltage range 390V to 790V compared to Microsemi’s existing Direct Drive™ inverter solutions. For applications needing fully automatic brightness control an ‘S’ version (LXMG1813-12-6xS) of the inverter includes a connector to mate the inverter with an external light sensor board (the LXMG1800_LS) which can extend the life of the display and save power (particularly important for battery powered products). The maximum output current of the inverter is externally programmable over a range of 4mA to 7mA in 1mA steps to allow the inverter to properly match (PanelMatch™) to a wide array of LCD panel lamp current specifications. For lower input voltage requirements the LXMG1811-05-6x or -6xS will work from a 5V input supply. The modules include a dimming input that permits brightness control from a DC voltage source, a PWM signal or an external potentiometer. The resultant “burst drive” that energizes the lamp was designed to ensure that no premature lamp degradation occurs, while allowing significant power savings at lower dim levels. Other benefits of the inverter’s topology include stable fixed-frequency operation, secondary-side strike voltage regulation and both open/shorted lamp protection with fault timeout.