TPS65146 - 具有 LDO、GPM 的 3 通道 LCD 偏置、VCOM 缓冲器和复位 IC

TPS65146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，TPS65146是具有 LDO、GPM 的 3 通道 LCD 偏置、VCOM 缓冲器和复位 IC，本站介绍了TPS65146的封装应用图解、特点和优点、功能等，并给出了与TPS65146相关的TI元器件型号供参考。

TPS65146 - 具有 LDO、GPM 的 3 通道 LCD 偏置、VCOM 缓冲器和复位 IC - 电流感应放大器、I2C/PMBus监控器 - 保护、监控和热插拔 - 德州仪器

产品描述

The TPS65146 offers a very compact power supply solution designed to supply the LCD bias voltages required by TFT (Thin Film Transistor) LCD panels running from a typical 3.3 V or 5 V supply rail. The device integrates a step-up converter for VS (Source Driver voltage), a positive charge pump regulator for VGH (Gate Driver High voltage), a logic voltage rail using an integrated LDO and a Vcom buffer driving the LCD backplane. In addition to that, a gate voltage shaping block is integrated for VGH, modulating the signal (into VGHM) with high flexibility by using a logic input VFLK and an external discharge resistor connected to RE pin. Also, an external discrete negative charge pump can be set using the boost converter of the TPS65146 to generate VGL (Gate Driver Low voltage). The integrated reset function together with the LCD discharge function available in the TPS65146 provide the signals enabling the discharge of the LCD TFT pixels when powering-off. The device includes safety features like overvoltage protection (OVP), as well as thermal shutdown.

产品特性

2.5V to 6.0V Input Voltage Range
16.5V Boost Converter With 2A Switch Current
650kHz/1.2MHz Selectable Switching Frequency
Adjustable Soft-Start for the Boost Converter
500mA LDO
Reset Function (XAO Signal)
Regulated VGH
Gate Voltage Shaping
VCOM Buffer
LCD Discharge Function
Overvoltage Protection
Thermal Shutdown
Undervoltage Lockout
24-Pin 4×4mm QFN Package
APPLICATIONS
- Notebook PC
- Monitor

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