Maxim Integrated Products has introduced an integrated PMIC for gate-in-panel (GIP) LCD monitors to provide a cost-competitive solution for powering the source drivers, gate drivers, and VCOM backplane in LCD monitor panels.
Developed using Maxim's proprietary, high-voltage BiCMOS process, the MAX17100 fulfills all the power requirements for GIP-based LCD monitor panels by integrating a boost regulator, three high-current operational amplifiers, a VCOM calibrator, linear regulators for gate-on and gate-off supplies, and a 6-channel level shifter.
All power blocks are optimized for GIP-based TFT LCDs. The boost regulator employs a 1.2 MHz switching frequency to allow the use of low-profile inductors and ceramic capacitors for slimmer panel designs. Built-in digital soft-start and an integrated power MOSFET control inrush currents while reducing the number of external components required. The MAX17100 delivers output voltages up to 18 V from a 2.5 V to 6 V input while achieving <85 percent efficiency. The integrated operational amplifiers drive the VCOM backplane and feature a 200 mA short-circuit current with a 45 V/microsecond slew rate. The 6-channel level shifter can swing from +35 V to -15 V and can swiftly drive capacitive loads. The MAX17100 also includes an I2C-controlled VCOM calibrator that provides 7-bit setting accuracy.
Availability and Pricing
The PMIC is available in a 6 mm x 6 mm, 48-pin TQFN package and operates over the -40 to +85 degrees Celsius extended industrial temperature range. Prices start at $1.50 (1000-up, FOB USA).