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TPS2148 用于 USB 外设的 3.3V LDO + 双路开关,工作态低电平启用

TPS2148 描述

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.

TPS2145 TPS2147 TPS2148 TPS2149 TPS2155 TPS2158 TPS2159
Number of FETs 2 2 2 2 2 2 2
Vin(Min)(V) 2.9 2.9 2.9 2.9 2.9 2.9 2.9
Vin(Max)(V) 5.5 5.5 5.5 5.5 5.5 5.5 5.5
Switch Enable L L L L H H H
rDS(on) per FET, Bus Power(Typ)(mOhms) 340 340 340 340 340 340 340
Application DSP, PDA DSP, PDA USB peripheral USB 2-port hub DSP, PDA USB peripheral USB 2-port hub
Switch Current Limit, Bus Power(Min)(A) 0.2 0.2 0.2 0.2 0.2 0.2 0.2
LDO Output Range(V) 3.3 3.3 3.3 3.3 3.3 3.3 3.3
LDO Output Current(mA) 200 200 200 200 200 200 200
Ports(Max) 2 2 2 2 2 2 2
Pin/Package 14HTSSOP 10MSOP-PowerPAD 8MSOP-PowerPAD 8MSOP-PowerPAD 14HTSSOP 8MSOP-PowerPAD 8MSOP-PowerPAD
TPS2148 特性
TPS2148 芯片订购指南
器件 状态 温度 (oC) 价格(美元) | Quantity 封装 | 引脚 封装数量 | 封装载体 丝印标记
TPS2148IDGN ACTIVE -40 to 85 1.25 | 1ku MSOP-PowerPAD (DGN) | 8 80 | TUBE AXB
TPS2148IDGNG4 ACTIVE -40 to 85 1.25 | 1ku MSOP-PowerPAD (DGN) | 8 80 | TUBE AXB
TPS2148 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
TPS2148IDGN Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TPS2148IDGN TPS2148IDGN
TPS2148IDGNG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TPS2148IDGNG4 TPS2148IDGNG4
TPS2148 应用技术支持与电子电路设计开发资源下载
  1. TPS2148 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器USB 功率控制器产品选型与价格 . xls
  3. PowerPADTM Thermally Enhanced Package (PDF 1040 KB)
  4. 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A) (PDF 2206 KB)
  5. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
  6. Comparing Performance of Current Ramp and Voltage Ramp Hot Swap Controller ICs (PDF 356 KB)
  7. DN-103 Controlling a -5V Rail Using TPS2148 +3V to +8V Hot-Swap Power Manager (PDF 37 KB)
  8. PowerPADTM Made Easy (PDF 57 KB)
  9. 标准线性产品交叉参考 (Rev. D) (PDF 1058 KB)
  10. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
  11. 所选封装材料的热学和电学性质 (PDF 645 KB)
  12. 高速数据转换 (PDF 1967 KB)
TPS2148 相关工具
名称 型号 公司 工具/软件类型
TPS2148 估模块 TPS2148EVM Texas Instruments 开发电路板/EVM