TPS2148_TI 具有 3.3V LDO（带使能引脚）和输出开关的低电平有效、双通道、0.15A 负载、340mΩ USB 电源开关

TPS2148的基本参数

制造厂商：TI
产品类别：电源管理
技术类目：USB 电源开关和充电端口控制器
功能描述：具有 3.3V LDO（带使能引脚）和输出开关的低电平有效、双通道、0.15A 负载、340mΩ USB 电源开关
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TPS2148的产品详情：

The TPS2148 incorporates two power distribution switches and an LDO in one small package, providing a USB peripheral power management solution that saves up to 60% in board space over typical implementations.

The TPS2148 meets USB 2.0 bus-powered peripheral requirements. An integrated LDO regulates the 5-V bus power down to 3.3 V for the USB controller, and a MOSFET switch that is internally connected to the output of the LDO simplifies meeting the suspend and enumeration current requirements imposed by the USB specification.

A second switch is available to support a downstream port, stage power to a second voltage regulator, or disable power to selected circuitry in power-save modes.

Each power-distribution switch is capable of supplying 200 mA of continuous current, and the independent logic enables are compatible with 5-V logic and 3-V logic. The switches and the LDO are designed with controlled rise times and fall times to minimize current surges.

The TPS2148 has active-low enables while the TPS2158 has active-high enables.

TPS2148的优势和特性：

Complete Power Management Solution for USB Bus-Powered Peripherals
3.3-V 200 mA Low-Dropout Voltage Regulator With Enable
3.3-V 340-m (Typ) High-Side MOSFET
5-V 340-m (Typ) High-Side MOSFET
Independent Thermal- and Short-Circuit Protection for LDO and Each Switch
2.9-V to 5.5-V Operating Range
CMOS- and TTL-Compatible Enable Inputs
75-uA (Typ) Supply Current
Available in 8-Pin MSOP (PowerPAD?)
-40°C to 85°C Ambient Temperature Range
APPLICATIONS
- USB Peripherals
  - Digital Cameras
  - Zip Drives
  - Speakers and Headsets

PowerPAD is a trademark of Texas Instruments.

TPS2148的参数（英文）：

Vin (Min) (V)
2.9
Vin (Max) (V)
5.5
Product type
Fixed current limit, Power switch, Switch with LDO
Operating temperature range (C)
-40 to 100
Rating
Catalog

TPS2148具体的完整产品型号参数及价格（美元）：

TPS2148的完整型号有：TPS2148IDGN，以下是这些产品的关键参数及官网采购报价：

TPS2148IDGN，工作温度：-40 to 100，封装：HVSSOP (DGN)-8，包装数量MPQ：80个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS2148IDGN的批量USD价格：1.1（1000+）

TPS2148的评估套件：

TPS2148的电路图解：

TPS2148的评估套件：