Date: 25/02/2010

Power-management IC from Maxim for TV TFT LCD display

The MAX17122 PMIC integrates three regulators to provide high-efficiency, fixed-frequency, and cost-effective operation for LCD HDTV panels.

MAX17122 integrates three regulators and feature high-efficiency and fixed-frequency operation to allow the use small inductors and capacitors. The MAX17122 IC generates all the supply rails for thin-film transistor (TFT) liquid-crystal display (LCD) TV panels.

The key features of the MAX17122 IC are,

Operating input voltage ranges from 8V to 16.5V
750kHz of switching frequency
22V of Internal-switch high-performance step-up regulator
22V internal-switch step-down regulator
36V of internal-switch boost-buck regulator
Soft-start for all outputs
Adjustable power-up sequence
Timed-output fault protection with restart for all outputs
Latched thermal-shutdown protection

The MAX17122 includes a positive charge-pump linear regulator controller that uses an external pnp bipolar junction transistor (BJT) to typically form a regulated charge-pump doubler to supply the LCD positive gate-driver supply voltage. A negative gate-driver supply is derived linearly between the boost-buck regulator's output and ground, using an external npn BJT connected to ground and a small bypass capacitor.

Operating temperature range: -40°C to +85°C

Package: 6mm x 6mm, 40-pin TQFN package
Price: Starts at each $1.10 for 1k pieces
Availability: Now

For more details visit www.maxim-ic.com