用于笔记本 PC、平板 PC 和监视器的具有集成伽马参考的 LCD 偏置
| Display type | LCD unipolar |
| IC integration | Gamma buffer, LCD bias, VCOM |
| Vin (Min) (V) | 2.6 |
| Vin (Max) (V) | 6 |
| Source driver voltage (Min) (V) | 7 |
| Source driver voltage (Max) (V) | 10.1 |
| Level shifter/scan driver (ch) | 0 |
| Features | Adjustable sequencing, GPM or GVS, Gamma buffer, I2C interface, Output discharge, Reset generator, Temperature sensor or compensation, VCOM or op amp |
| Topology | Boost, Buck |
| Rating | Catalog |
- 2.6 V to 6 V Input Voltage Range
- Synchronous Boost Converter (AVDD)
- Non-Synchronous Boost Converter With Temperature
Compensation (VGH) - Synchronous Buck Converter (VCORE)
- Synchronous Buck Converter (VIO1)
- Low Dropout Linear Regulator (VIO2)
- Programmable VCOM Calibrator With Two
Integrated Buffer Amplifiers - Gate Voltage Shaping
- Panel Discharge Signal (XAO)
- System Reset Signal (RST)
- 14-Channel, 10-Bit Programmable Gamma Voltage Correction
- On-Chip EEPROM with Write Protect
- I2C? Interface
- Thermal Shutdown
- Supports GIP and Non-GIP Displays
- 56-Ball, 3,16-mm × 3,45-mm 0,4-mm Pitch DSBGA
The TPS65642A device is a compact LCD bias solution primarily intended for use in notebook and tablet PCs. The device comprises two boost converters to supply the source driver and gate driver, or level shifter, of the LCD panel; two buck converters and a low-dropout (LDO) linear regulator to supply the system logic voltages; a programmable VCOM generator with two high-speed amplifiers; 14-channel gamma-voltage correction; and a gate-voltage shaping function.
