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.

• 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: 40mA 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)
• 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

• Number of channels (#)
• 1
• Vin (Min) (V)
• 1.62
• Vin (Max) (V)
• 5.5
• Imax (A)
• 0.2
• Ron (Typ) (mOhm)
• 500
• Shutdown current (ISD) (Typ) (uA)
• 1
• Quiescent current (Iq) (Typ) (uA)
• 40
• Soft start
• Fixed Rise Time
• Rise time (Typ) (us)
• 10
• Current limit type
• Fixed
• Features
• Thermal shutdown
• Operating temperature range (C)
• -40 to 85

TPS22945的完整型号有：TPS22945DCKR，以下是这些产品的关键参数及官网采购报价：

TPS22945DCKR，工作温度：-40 to 85，封装：SC70 (DCK)-5，包装数量MPQ：3000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TPS22945DCKR的批量USD价格：0.354（1000+）

TPS22945EVM-082 — TPS22945 评估模块

TPS22945EVM-082 评估模块 (EVM) 是一个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。

TPS22945 Unencrypted PSpice Transient Model Package (Rev. B)

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)

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