TPS65165

www.ti.com TPS65165 SLVS723A – DECEMBER 2006 – REVISED MAY 2007 Compact LCD Bias IC With High Speed Amplifiers for TV and Monitor TFT-LCD Panels FEATURES 2.5 V to 6.0 V Input Voltage Range Vs Output Voltage up to 18 V – 1%-Accurate Boost Converter With 4.5 A Switch Current – 600 kHz Fixed Frequency PWM Operation – Overvoltage Protection – Adjustable Softstart Regulated Positive Charge Pump Converter VGH Integrated Gate Voltage Shaping of VGH Regulated Negative Charge-Pump Driver VGL Adjustable Sequencing for Vs and VGH 3 Integrated High-Speed Operational Amplifiers – 50 MHz 3 db Bandwidth – Slew Rate 45 V/µs – 215 mA Short Circuit Current High Voltage Test Mode (HVS) Thermal Shutdown 40-Pin 5×5-mm QFN Package APPLICATIONS LCD Monitor LCD TV Panel DESCRIPTION The TPS65165 is a Compact LCD Bias IC with 3 high-speed operational amplifiers for gamma correction and/or VCOM supply. The device generates all 3 voltage rails for TFT-LCD displays (Vs, VGL and VGH). The device incorporates a high-voltage switch that can be controlled by a logic signal from the timing controller (TCON) to provide the gate-voltage modulation for VGH. If this function is not required, the CTRL pin can be tied high. Vin 2.5V to 6.0V L1 10uH D1 C1 C2 C3 22 mF 22 mF 22 mF C4 1 mF C10 1 nF R3 30 kW COMP C2P C11 330 nF C2N HVS CTRL DRN R10 1kW POS1 NEG1 OUT1 C5 C6 C7 22 mF 22 mF 22 mF Boost Converter D S Positive Charge Pump x2 or x3 High Voltage Switch Control 1 ...