Texas Instruments TPS65142
The TPS65142 provides a compact solution to the bias power and the WLED backlight in note-pc TFTLCD 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. The TPS65142 also offers the complete solution to driver up to 6 chains of WLEDs with 1000:1 ratio PWM dimming.| Part No. | TPS65142 |
|---|---|
| Datasheet | TPS65142 Download |
| Manufacturer |  Texas Instruments |
| Description | LCD Bias Power Integrated |
| Buy | Stock & Price |
FEATURES
●1 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 3
DESCRIPTION
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.
