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TPS22941

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使能端低電平有效、具有電流限制的 5.5V、0.04A、500mΩ 負載開關

產品詳情

Imax (A) 0.08, 0.2 Vin (max) (V) 5.5 Vin (min) (V) 1.62 Number of channels 1 Features Active low, Inrush current control, Thermal shutdown, Under voltage lock out Quiescent current (Iq) (typ) (μA) 40 Soft start Fixed Rise Time Rating Catalog Ron (typ) (mΩ) 500 Shutdown current (ISD) (typ) (μA) 1 Current limit type Fixed Function Inrush current control, Thermal shutdown FET Internal Operating temperature range (°C) -40 to 85 Device type Load switches
Imax (A) 0.08, 0.2 Vin (max) (V) 5.5 Vin (min) (V) 1.62 Number of channels 1 Features Active low, Inrush current control, Thermal shutdown, Under voltage lock out Quiescent current (Iq) (typ) (μA) 40 Soft start Fixed Rise Time Rating Catalog Ron (typ) (mΩ) 500 Shutdown current (ISD) (typ) (μA) 1 Current limit type Fixed Function Inrush current control, Thermal shutdown FET Internal Operating temperature range (°C) -40 to 85 Device type Load switches
SOT-SC70 (DCK) 5 4.2 mm2 2 x 2.1
  • 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)
  • 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
  • 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)
  • 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.

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.

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類型 標題 下載最新的英語版本 日期
* 數據表 TPS2294x Low-input-voltage Current-limited Load Switches With Shut Off And Auto-Restart Feature 數據表 (Rev. D) PDF | HTML 2014年 7月 10日
應用手冊 Load Switch Thermal Considerations (Rev. A) 2018年 10月 11日
應用手冊 Basics of Load Switches (Rev. A) 2018年 9月 5日
選擇指南 電源管理指南 2018 (Rev. K) 2018年 7月 31日
選擇指南 電源管理指南 2018 (Rev. R) 2018年 6月 25日
應用手冊 Selecting a Load Switch to Replace a Discrete Solution 2017年 4月 30日
應用手冊 Timing of Load Switches 2017年 4月 27日
應用手冊 Managing Inrush Current (Rev. A) 2015年 5月 28日
應用手冊 負載開關:什么是負載開關,為什么需要負載開關,如何選擇正確的負載開關? 最新英語版本 (Rev.A) 2014年 8月 11日

設計和開發

如需其他信息或資源,請點擊以下任一標題進入詳情頁面查看(如有)。

評估板

TPS22945EVM-082 — TPS22945 評估模塊

TPS22945EVM-082 評估模塊 (EVM) 是一個組裝完備且經過測試的電路,用于評估 TPS22945 負載開關。通過該器件的輸入和輸出連接以及 PCB 布局布線,可提供進出被測器件的低電阻通道。通過測試點連接,EVM 用戶可以在用戶定義的測試條件下控制器件并進行準確的 RON 和時序測量。

用戶指南: PDF
TI.com 上無現貨
仿真模型

TPS22941 PSpice Transient Model

SLVMAG4.ZIP (3 KB) - PSpice Model
模擬工具

PSPICE-FOR-TI — PSpice? for TI 設計和仿真工具

PSpice? for TI 可提供幫助評估模擬電路功能的設計和仿真環境。此功能齊全的設計和仿真套件使用 Cadence? 的模擬分析引擎。PSpice for TI 可免費使用,包括業內超大的模型庫之一,涵蓋我們的模擬和電源產品系列以及精選的模擬行為模型。

借助?PSpice for TI 的設計和仿真環境及其內置的模型庫,您可對復雜的混合信號設計進行仿真。創建完整的終端設備設計和原型解決方案,然后再進行布局和制造,可縮短產品上市時間并降低開發成本。?

在?PSpice for TI 設計和仿真工具中,您可以搜索 TI (...)
參考設計

TIDA-010055 — 適用于保護繼電器模塊且具有診斷功能的非隔離式電源架構參考設計

該參考設計展示了適用于具有模擬輸入/輸出和通信模塊的保護繼電器的非隔離式電源架構,這些模塊通過 5V、12V 或 24V 直流輸入生成。為了生成電源,該設計針對尺寸和設計時間受限的應用使用帶集成 FET 的直流/直流轉換器和帶集成電感器的電源模塊,并針對需要低 EMI 和線性穩壓器 (LDO) 以實現低紋波的應用采用 HotRod? 封裝類型。保護措施包括用于輸入瞬態保護的平緩鉗位 TVS,用于過載保護且具有可配置負載電流的電子保險絲,以及用于輸入反轉保護的理想二極管控制器。其他功能包括自動切換電源多路復用器、模擬溫度傳感器、輸入正常指示、“空載”檢測和電壓監控器。
設計指南: PDF
原理圖: PDF
封裝 引腳 CAD 符號、封裝和 3D 模型
SOT-SC70 (DCK) 5 Ultra Librarian

訂購和質量

包含信息:
  • RoHS
  • REACH
  • 器件標識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續可靠性監測
包含信息:
  • 制造廠地點
  • 封裝廠地點

推薦產品可能包含與 TI 此產品相關的參數、評估模塊或參考設計。

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