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Power supply ICs for LCD modules in car navigation systems

Posted: 05 Mar 2014     Print Version  Bookmark and Share

Keywords:Toshiba  LCD module  car navigation  DC-DC converter  IC 

Toshiba Corp. has introduced a system power supply IC aimed at medium-sized LCD modules mainly used in car navigation systems. The TC7735FTG also supports a wide operational voltage range from 4.5-16V, which enables direct power supply from car batteries, the firm noted.

LCD modules require maximum five different voltage power supplies to drive the controller and drivers. The IC integrates two channels of DC-DC converters, two channels of charge pumps and one operational amplifier. This allows LCD modules to be driven with a single chip, reducing mounting area.


The IC integrates an OTP memory, allowing it to store different power control set-up data for each LCD modules. It also features built-in five different power outputs and adopts an automatic buck-boost converter that identifies input voltage and selects operation mode (buck or boost), eliminating control by external command, and boasts a built-in OTP for adjustable power control of each LCD.

Available in a 5 x 5mm QFN32pin package, device also offers input over voltage detection and thermal shutdown. Sample shipments are rolling out.

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