TPS65140-Q1 - 用于 LCD 监视器的汽车类 4 通道电源 (5V)

TPS65140-Q1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，TPS65140-Q1是用于 LCD 监视器的汽车类 4 通道电源 (5V)，本站介绍了TPS65140-Q1的封装应用图解、特点和优点、功能等，并给出了与TPS65140-Q1相关的TI元器件型号供参考。

TPS65140-Q1 - 用于 LCD 监视器的汽车类 4 通道电源 (5V) - 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 TPS65140/145 offers a compact and small power supply solution to provide all three voltages required by thin film transistor (TFT) LCD displays. The auxiliary linear regulator controller can be used to generate a 3.3-V logic power rail for systems powered by a 5-V supply rail only.

The main output Vo1 is a 1.6-MHz fixed frequency PWM boost converter providing the source drive voltage for the LCD display. The device is available in two versions with different internal switch current limits to allow the use of a smaller external inductor when lower output power is required. The TPS65140 has a typical switch current limit of 2.3 A and the TPS65145 has a typical switch current limit of 1.37 A. A fully integrated adjustable charge pump doubler/tripler provides the positive LCD gate drive voltage. An externally adjustable negative charge pump provides the negative gate drive voltage. Due to the high 1.6-MHz switching frequency of the charge pumps, inexpensive and small 220-nF capacitors can be used.

Additionally, the TPS65140/145 has a system power good output to indicate when all supply rails are acceptable. For LCD panels powered by 5 V, only the TPS65140/145 has a linear regulator controller using an external transistor to provide a regulated 3.3-V output for the digital circuits. For maximum safety, the entire device goes into shutdown as soon as one of the outputs is out of regulation. The device can be enabled again by toggling the input or the enable (EN) pin to GND.

产品特性

Qualified For Automotive Applications
2.7-V to 5.8-V Input Voltage Range
1.6-MHz Fixed Switching Frequency
Three Independent Adjustable Outputs
Main Output up to 15 V With <1% Typical Output Voltage Accuracy
Negative Output Voltage Down to –12 V/20 mA
Positive Output Voltage up to 30 V/20 mA
Auxiliary 3.3-V Linear Regulator Controller
Internal Soft Start
Internal Power-On Sequencing
Fault Detection of all Outputs
Thermal Shutdown
System Power Good
Available in a TSSOP-24 PowerPAD™ Package
APPLICATIONS
- TFT LCD Displays for Automobiles
  - Cluster Panels
  - Navigation Displays
  - Passenger Entertainment Modules
- TFT LCD Displays for Notebooks
- TFT LCD Displays for Monitors
- Portable DVD Players
- Industrial Displays

PowerPAD is a trademark of Texas Instruments.

下面可能是您感兴趣的TI德州仪器公司电流感应放大器、I2C/PMBus监控器元器件

TI公司产品现货专家，订购TI公司产品不限最低起订量，TI芯片大陆现货即时发货，香港库存3-5天发货，海外库存7-10天发货

寻找全球TI代理商现货货源 - TI公司（德州仪器）电子元件在线订购