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
- Two 340-mOhm (Typical) High-Side MOSFETs
- 200 mA Low-Dropout Voltage Regulator In Fixed 3.3-V or Adjustable Versions
- Independent Thermal- and Short-Circuit Protection for LDO and Each Switch
- Overcurrent Indicators With Transient Filter
- 2.9-V to 5.5-V Operating Range
- CMOS- and TTL-Compatible Enable Inputs
- 75-uA (Typical) Supply Current
- Available in 10-Pin MSOP or 14-Pin TSSOP (PowerPADTM)
- -40°C to 85°C Ambient Temperature Range
- APPLICATIONS
- USB Hubs and Peripherals
- Keyboards
- Zip Drives
- Speakers and Headsets
- PDAs and Portable Electronics
- DSP Power Sequencing
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
- TPS2145 数据资料 dataSheet 下载.PDF
- TI 德州仪器USB 功率控制器产品选型与价格 . xls
- PowerPADTM Thermally Enhanced Package
(PDF 1040 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
- Comparing Performance of Current Ramp and Voltage Ramp Hot Swap Controller ICs
(PDF 356 KB)
- DN-103 Controlling a -5V Rail Using TPS2145 +3V to +8V Hot-Swap Power Manager
(PDF 37 KB)
- PowerPADTM Made Easy (PDF 57 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 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 |