TPS65640是TI公司的一款电流感应放大器、I2C/PMBus监控器产品，TPS65640是用于笔记本 PC 和平板 PC 的具有数字 VCOM 缓冲器的 LCD 偏置，本页介绍了TPS65640的产品说明、应用、特性等，并给出了与TPS65640相关的TI元器件型号供参考。
TPS65640 - 用于笔记本 PC 和平板 PC 的具有数字 VCOM 缓冲器的 LCD 偏置 - 电流感应放大器、I2C/PMBus监控器 - 保护、监控和热插拔 - TI公司（Texas Instruments，德州仪器）
The TPS65640 is a compact LCD bias solution primarily intended for use in Notebook and Tablet PCs. The device comprises two boost converters to supply the LCD panel’s source driver and gate driver/level shifter; one buck converters or a LDO regulator alternatively to supply the time controller logic voltages; a linear negative voltage regulator to supply gate off voltage or provide negative voltage for source driver; a programmable VCOM generator with one high-speed amplifier; a gate voltage shaping function and two high speed operational amplifiers.
All the regulators and VCOM voltage outputs are programmed through I2C interface and stored in the TPS65640 integrated E2PROM. The TPS65640 is available in 5.5mm × 3.5mm, 28 Leads QFN package.
- 2.5V to 5.5V Input Voltage Range
- 3.6 to 12.7V Boost Converter (AVDD)
- 15 to 37V Boost Converter with Temperature Compensation (VGH)
- –8V to –3.8V Linear Negative Voltage Regulator (VGL or NAVDD)
- 1.5V to 3V Alternative Buck Converter or Low Dropout Regulator (V25)
- 7 bits Programmable VCOM Calibrator with one Integrated Buffer Amplifiers
- 0.8V to 5.1V Programmable VCOM Voltage Output for Full AVDD Application
- –4.1V to 0.2V Programmable VCOM Voltage Output for Positive and Negative AVDD Application
- Two Operational Amplifiers
- Gate Voltage Shaping
- Programmable VGH and VCOM Temperature Compensation
- TCON Reset Signal Generator with Programmable delay
- I2C Interface for E2PROM Programming
- Thermal shutdown
- Supports GIP and non-GIP displays
- 28 pins 5.5mm×3.5mm 0.5mm pitch QFN
