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Integrated PMIC tailored for notebook LCDs

Posted: 21 Jul 2009 ?? ?Print Version ?Bookmark and Share

Keywords:power management? PMIC? LCD? notebook?

Maxim Integrated Products has launched the MAX17088 power-management IC (PMIC) that integrates boost regulator, programmable VCOM calibrator with non-volatile memory, high-current operational amplifier and a level-shifting scan driver for notebook LCD panels.

Developed using Maxim's proprietary high-voltage BiCMOS process, this device includes all functions required to power the LCD source drivers, gate drivers and VCOM backplane. Through this high level of integration, the MAX17088 provides a cost-effective power solution for LCD panels in notebooks and monitors.

The boost regulator has a 1.2MHz switching frequency and integrates a 20V, 150m? power MOSFET. It delivers output voltages up to 18V from a 1.8V to 5.5V input while achieving >85 percent efficiency. The integrated operational amplifier drives the VCOM backplane and features 150mA short-circuit current with a 40V/?s. The MAX17088 also integrates a scan driver that drives from -25V to +45V and allows output charge sharing to save power. The two-wire, I?C-controlled VCOM calibrator provides 7bit setting accuracy and minimizes connector pin count.

The MAX17088 is available in a 6mm x 6mm, 36-pin TQFN package and is fully specified over the -40C to +85C extended temperature range. Prices start at $1.25 (1,000-up, FOB USA).

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