TPS65640

• 2.5V to 5.5V Input Voltage Range
• 3.6 to 12.7V Boost Converter (AV_DD)
• 15 to 37V Boost Converter with Temperature
  Compensation (V_GH)
• –8V to –3.8V Linear Negative Voltage Regulator
  (V_GL or NAV_DD)
• 1.5V to 3V Alternative Buck Converter or
  Low Dropout Regulator (V₂₅)
• 7 bits Programmable V_COM Calibrator with one
  Integrated Buffer Amplifiers
• 0.8V to 5.1V Programmable V_COM Voltage Output
  for Full AV_DD Application
• –4.1V to 0.2V Programmable V_COM Voltage
  Output for Positive and Negative AV_DD Application
• Two Operational Amplifiers
• Gate Voltage Shaping
• Programmable V_GH and V_COM Temperature
  Compensation
• T_CON 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

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 V_COM 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.