TPS2070 - 具有 5V LDO 控制、3.3V LDO、8 个电源开关、工作态低电平 BPMode Ind，用于总线/自供电集线器的功率控制器

TPS2070是TI德州仪器公司的一款含LDO的开关产品，TPS2070是具有 5V LDO 控制、3.3V LDO、8 个电源开关、工作态低电平 BPMode Ind，用于总线/自供电集线器的功率控制器，本站介绍了TPS2070的封装应用图解、特点和优点、功能等，并给出了与TPS2070相关的TI元器件型号供参考。

TPS2070 - 具有 5V LDO 控制、3.3V LDO、8 个电源开关、工作态低电平 BPMode Ind，用于总线/自供电集线器的功率控制器 - 含LDO的开关 - USB电源和充电端口控制器 - 德州仪器

产品描述

The TPS2070 and TPS2071 provide a complete USB hub power solution by incorporating four major functions: current-limited power switches for four ports, a 3.3-V 100-mA regulator, a 5-V regulator controller for self-power, and a DP0 line control to signal attach/detach of the hub.

These devices are designed to meet bus-powered and self-powered hub requirements. These devices are also designed for hybrid hub implementations and allow for automatic switching from self-powered mode to bus-powered mode if loss of self-power is experienced (can be disabled by applying a logic high to BP_DIS).

Each port has a current-limited 107-m N-channel MOSFET high-side power switch for 100-mA bus-powered operation. All the N-channel MOSFETs are designed without parasitic diodes, preventing current backflow into the inputs.

For applications not requiring a 5-V regulator controller, use the TPS2074 or TPS2075 device.

产品特性

Complete USB Hub Power Solution
Meets USB Specifications 1.1 and 2.0
Independent Thermal and Short-Circuit Protection
3.3-V Regulator for USB Hub Controller
Overcurrent Logic Outputs
4.5-V to 5.5-V Operating Range
CMOS- and TTL-Compatible Enable Inputs
185 µA Bus-Power Supply Current
Available in 32-Pin HTSSOP PowerPAD™ Package
-40°C to 85°C Ambient Temperature Range

2PowerPAD is a trademark of Texas Instruments.

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