Acer 290E manual TX38D81VC1CAB

LCD Inverter Specification

This inverter is designed to light up the CCFL of LCD for TravelMate 290E series notebook. It should be supported the following LCD panels.

No.	Supplier	Model	Type
6	Hitachi	TX38D81VC1CAB	TFT, 15.0 XGA
7	LG	LP150X08-A3	TFT 15.0” XGA
8	Hannstar	HSD150PX17-A	TFT, 15.0” XGA

There are two control signals that come form system to control lamp brightness. One signal is named DAC_BRIG, which limits current to meet LCD lamp current specification. Another one is named PWM, which adjusts lamp brightness. This inverter brightness is adjusted by PWM burst mode. The PWM burst mode is that turning on and off the lamp at rate of 150Hz. The effective brightness is a function of the duty cycle.

Features

1.Wide range 9V to 21V input voltage.

2.Birghtness adjustment by PWM duty mode.

3.Close loop controls lamp current.

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