TPS65142
- 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
- Up to 16.5 V Boost Converter with 1.8-A
- 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
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 × 3 mm2 Thin QFN package.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS65142 LCD Bias Power Integrated with WLED Backlight Drivers datasheet (Rev. B) | PDF | HTML | 2015/8/14 | ||
| 應用說明 | Basic Calculation of a Boost Converter's Power Stage (Rev. D) | PDF | HTML | 2022/10/28 | |||
| 應用說明 | Understanding Undervoltage Lockout in Power Devices (Rev. A) | 2018/9/19 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Generation of a VCOM buffer input using PWM signal | 2015/12/21 | ||||
| 應用說明 | TPS65142 Loop Compensation Design Consideration | 2013/7/2 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RTG) | 32 | Ultra Librarian |
訂購與品質
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