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MAX749

Part Number	MAX749
Manufacturer	Maxim
Description	Digitally Adjustable LCD Bias Supply
Published	May 2, 2005
Detailed Description	19-0143; Rev 1; 2/95 NUAL KIT MA ATION HEET S A EVALU T A WS D FOLLO Digitally Adjustable LCD Bias Supply ____________...
Datasheet	MAX749 PDF File

Overview

19-0143; Rev 1; 2/95 NUAL KIT MA ATION HEET S A EVALU T A WS D FOLLO Digitally Adjustable LCD Bias Supply _______________General Description The MAX749 generates negative LCD-bias contrast voltages from 2V to 6V inputs.
Full-scale output voltage can be scaled to -100V or greater, and is digitally adjustable in 64 equal steps by an internal digital-toanalog converter (DAC).
Only seven small surfacemount components are required to build a complete supply.
The output voltage can also be adjusted using a PWM signal or a potentiometer.
A unique current-limited control scheme reduces supply current and maximizes efficiency, while a high switching frequency (up to 500kHz) minimizes the size of ex...

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