TPS22945
- Input Voltage Range: 1.62 V to 5.5 V
- Low ON resistance
- rON = 0.4 Ω at VIN = 5.5 V
- rON = 0.5 Ω at VIN = 3.3 V
- rON = 0.6 Ω at VIN = 2.5 V
- rON = 0.8 Ω at VIN = 1.8 V
- Minimum Current Limit: 40 mA or 100 mA
- Undervoltage Lockout (UVLO)
- Thermal Shutdown
- Shutdown Current < 1 µA
- Fast Current Limit Response Time
- Fault Blanking
- Auto Restart
- 1.8-V Compatible Control Input Thresholds
- ESD Performance Tested Per JESD 22
- 4000-V Human-Body Model
(A114-B, Class II) - 1000-V Charged-Device Model (C101)
- 4000-V Human-Body Model
- Tiny SC-70 (DCK) Package
- UL Recognized Component (UL File 169910)
- Evaluated to IEC 60950-1, Ed 2, Am1, Annex CC,
Test Program 2 with CB Report
The TPS22941/2/3/4/5 load switches provide protection to systems and loads in high-current conditions. The devices contain a 0.4-Ω current-limited P-channel MOSFET that can operate over an input voltage range of 1.62 V to 5.5 V. Current is prevented from flowing when the MOSFET is off. The switch is controlled by an on/off input (ON), which is capable of interfacing directly with low-voltage control signals. The TPS22941/2/3/4/5 includes thermal shutdown protection that prevents damage to the device when a continuous over-current condition causes excessive heating by turning off the switch.
These devices provide an integrated, robust solution to provide current limiting the output current to a safe level by switching into a constant-current mode when the ouptut load exceeds the current-limit threshold. The OC logic output asserts low during overcurrent, undervoltage, or overtemperature conditions. These additional features make the TPS22941/2/3/4/5 an ideal solution for applications where current limiting is necessary.
This family of devices are available in a SC70-5 (DCK) package. It is characterized for operation over the free-air temperature range of –40°C to 85°C.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TPS2294x Low-input-voltage Current-limited Load Switches With Shut Off And Auto-Restart Feature 数据表 (Rev. D) | PDF | HTML | 2014-7-10 | ||
| 电子书 | 11 Ways to Protect Your Power Path | 2019-7-3 | ||||
| 应用手册 | Load Switch Thermal Considerations (Rev. A) | 2018-10-11 | ||||
| 应用手册 | Basics of Load Switches (Rev. A) | 2018-9-5 | ||||
| 选择指南 | 电源管理指南 2018 | 2018-7-31 | ||||
| 技术文章 | How to use load switches and eFuses in your set-top box design | PDF | HTML | 2017-11-23 | |||
| 应用手册 | Selecting a Load Switch to Replace a Discrete Solution | 2017-4-30 | ||||
| 应用手册 | Timing of Load Switches | 2017-4-27 | ||||
| 应用手册 | Managing Inrush Current (Rev. A) | 2015-5-28 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
TPS22945EVM-082 — TPS22945 评估模块
TPS22945EVM-082 评估模块 (EVM) 是一款组装完备且经过测试的电路，用于评估 TPS22945 负载开关。通过该器件的输入和输出连接以及 PCB 布局布线，可提供进出被测器件的低电阻通道。通过测试点连接，EVM 用户可以在用户定义的测试条件下控制器件并进行准确的 RON 和时序测量。
PMP21065 — 适用于机顶盒的超低待机功耗、高效率的直流-直流电源参考设计
PMP21065 参考设计通过典型的 12V 直流输入产生当今机顶盒中常见的电源轨。此设计的主要目标是实现低成本、小尺寸、低待机功耗以及高效率，从而帮助客户满足有关 STB 功耗的新监管准则。
TIDA-01451 — 适用于机顶盒的电源开关参考设计
TIDA-01451 参考设计的功能模拟机顶盒的配电情况。通过使用集成负载开关来控制电源轨，可根据用户需求打开或关闭每个电源轨。关闭未使用的电源轨可减少功率损耗并有助于达到能源合规性标准（如 Energy Star）。置于输入端的保险丝可以管理热插拔瞬变，并保护下游的直流/直流转换器免受过高或过低输入电压损坏，从而降低终端设备的返修率。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOT-SC70 (DCK) | 5 | Ultra Librarian |
订购和质量
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