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 A
• 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

TPS22943的完整型号有：TPS22943DCKR，以下是这些产品的关键参数及官网采购报价：

TPS22943DCKR，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TPS22943DCKR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。

TPS22943 Unencrypted PSpice Transient Model Package (Rev. A)

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。

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