TPS2145 用于 USB、DSP 和便携应用领域的可调节 LDO + 双路开关,工作态低电平启用

TPS2145 描述

Two power-distribution switches and an adjustable (TPS2145) or fixed (TPS2147) LDO are incorporated in one small package, providing a power management solution that saves up to 60% in board space over typical implementations. Designed to meet USB 2.0 bus-powered hub requirements, these devices also allow core and I/O voltage sequencing in DSP applications, or power segmentation in portable equipment. Each current-limited switch is a 340-m N-channel MOSFET capable of supplying 200 mA of continuous current. A logic enable compatible with 5-V logic and 3-V logic controls each MOSFET as well as the LDO in the TPS2145. The internal charge pump provides the gate drive controlling the power-switch rise times and fall times, minimizing current surges during switching.

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
TPS2145 特性
TPS2145 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
TPS2145IPWP ACTIVE -40 to 85 1.75 | 1ku HTSSOP (PWP) | 14 90 | TUBE PD2145I
TPS2145IPWPG4 ACTIVE -40 to 85 1.75 | 1ku HTSSOP (PWP) | 14 90 | TUBE PD2145I
TPS2145IPWPR ACTIVE -40 to 85 1.45 | 1ku HTSSOP (PWP) | 14 2000 | LARGE T&R PD2145I
TPS2145IPWPRG4 ACTIVE -40 to 85 1.45 | 1ku HTSSOP (PWP) | 14 2000 | LARGE T&R PD2145I
TPS2145 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
TPS2145IPWP Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR TPS2145IPWP TPS2145IPWP
TPS2145IPWPG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR TPS2145IPWPG4 TPS2145IPWPG4
TPS2145IPWPR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR TPS2145IPWPR TPS2145IPWPR
TPS2145IPWPRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR TPS2145IPWPRG4 TPS2145IPWPRG4
TPS2145 应用技术支持与电子电路设计开发资源下载
  1. TPS2145 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. PowerPAD™ 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 TPS2145 +3V to +8V Hot-Swap Power Manager   (PDF  37 KB)
  8. PowerPAD™ 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)
TPS2145 相关工具
名称 型号 公司 工具/软件类型
TPS2145 估模块 TPS2145EVM Texas Instruments 开发电路板/EVM