TPS65142 - 用于具有 6ch WLED 驱动器的 LCD 面板的 LCD 偏置解决方案

TPS65142是TI德州仪器公司的一款电流感应放大器、I2C/PMBus监控器产品，TPS65142是用于具有 6ch WLED 驱动器的 LCD 面板的 LCD 偏置解决方案，本站介绍了TPS65142的封装应用图解、特点和优点、功能等，并给出了与TPS65142相关的TI元器件型号供参考。

TPS65142 - 用于具有 6ch WLED 驱动器的 LCD 面板的 LCD 偏置解决方案 - 电流感应放大器、I2C/PMBus监控器 - 保护、监控和热插拔 - 德州仪器

产品特性

Integrated Bias and Backlight Power
2.3-V to 6-V Input Voltage Range for Bias
- Up to 16.5 V Boost Converter with 1.8-A Switch Current
- 1.2-MHz / 650-kHz Selectable Switching Frequency
- Internal Compensation
- Internal Soft-start at Power on
- Reset Function (XAO Signal)
- Regulated VGH
- Regulated VGL
- Gate Voltage Shaping
- LCD Discharge Function
150-mA Unity Gain VCOM Buffer
4.5-V to 24-V WLED Backlight Input Range
- Integrated 1.5-A / 40-V MOSFET
- Boost Output Tracks WLED Voltage
- Internal Compensation
- External Current Setting Input
- 6 Current-Sink Channels of 25 mA
- Better than 3% Current Matching
- Up to 1000:1 PWM Dimming Range
Overvoltage Protection
Thermal Shutdown
Undervoltage Lockout
32-Pin 6 mm × 3 mm QFN Package

产品应用

Note-PC TFT-LCD Panels
Tablet TFT-LCD Panels

产品说明

The TPS65142 provides a compact solution to the bias power and the WLED backlight in note-pc TFT-LCD panels. The device features a boost converter, a positive charge pump regulator, and a negative charge pump regulator to power the source drivers and the gate drivers. A 150 mA unity-gain high-speed buffer is offered to drive the VCOM plane. Gate voltage shaping and the LCD discharge function are offered to improve the image quality. A reset function allows a proper reset of the TCON at the power on. The TPS65142 also offers the complete solution to driver up to 6 chains of WLEDs with 1000:1 ratio PWM dimming.

All features are integrated in a compact 6 x 3 mm2 Thin QFN package.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS65142	WQFN (32)	6.00 mm x 3.00 mm

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