主頁(yè) 電源管理 負(fù)載開(kāi)關(guān)

TPS22945

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使能端高電平有效、具有電流限制和消隱功能的 5.5V、0.1A、500mΩ 負(fù)載開(kāi)關(guān)

產(chǎn)品詳情

Imax (A) 0.2 Vin (max) (V) 5.5 Vin (min) (V) 1.62 Number of channels 1 Features 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 Thermal shutdown FET Internal Operating temperature range (°C) -40 to 85 Device type Load switches
Imax (A) 0.2 Vin (max) (V) 5.5 Vin (min) (V) 1.62 Number of channels 1 Features 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 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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頂層文檔 類(lèi)型 標(biāo)題 格式選項(xiàng) 下載最新的英語(yǔ)版本 日期
* 數(shù)據(jù)表 TPS2294x Low-input-voltage Current-limited Load Switches With Shut Off And Auto-Restart Feature 數(shù)據(jù)表 (Rev. D) PDF | HTML 2014年 7月 10日
電子書(shū) 11 Ways to Protect Your Power Path 2019年 7月 3日
應(yīng)用手冊(cè) Load Switch Thermal Considerations (Rev. A) 2018年 10月 11日
應(yīng)用手冊(cè) 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
技術(shù)文章 How to use load switches and eFuses in your set-top box design PDF | HTML 2017年 11月 23日
應(yīng)用手冊(cè) Selecting a Load Switch to Replace a Discrete Solution 2017年 4月 30日
應(yīng)用手冊(cè) Timing of Load Switches 2017年 4月 27日
應(yīng)用手冊(cè) Managing Inrush Current (Rev. A) 2015年 5月 28日
EVM 用戶(hù)指南 Using the TPS22945EVM-082 Single Channel Current Limited Load Switch IC 2014年 9月 2日
應(yīng)用手冊(cè) 負(fù)載開(kāi)關(guān)：什么是負(fù)載開(kāi)關(guān)，為什么需要負(fù)載開(kāi)關(guān)，如何選擇正確的負(fù)載開(kāi)關(guān)？ 最新英語(yǔ)版本 (Rev.A) 2014年 8月 11日

設(shè)計(jì)與開(kāi)發(fā)

如需其他信息或資源，請(qǐng)點(diǎn)擊以下任一標(biāo)題進(jìn)入詳情頁(yè)面查看（如有）。

評(píng)估板

TPS22945EVM-082 — TPS22945 評(píng)估模塊

TPS22945EVM-082 評(píng)估模塊 (EVM) 是一個(gè)組裝完備且經(jīng)過(guò)測(cè)試的電路，用于評(píng)估 TPS22945 負(fù)載開(kāi)關(guān)。通過(guò)該器件的輸入和輸出連接以及 PCB 布局布線，可提供進(jìn)出被測(cè)器件的低電阻通道。通過(guò)測(cè)試點(diǎn)連接，EVM 用戶(hù)可以在用戶(hù)定義的測(cè)試條件下控制器件并進(jìn)行準(zhǔn)確的 RON 和時(shí)序測(cè)量。

用戶(hù)指南: PDF
TI.com 上無(wú)現(xiàn)貨
仿真模型

TPS22945 Unencrypted PSpice Transient Model Package (Rev. B)

SLVMAG8B.ZIP (59 KB) - PSpice Model
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參考設(shè)計(jì)

PMP21065 — 適用于機(jī)頂盒的超低待機(jī)功耗、高效率的直流-直流電源參考設(shè)計(jì)

PMP21065 參考設(shè)計(jì)通過(guò)典型的 12V 直流輸入產(chǎn)生當(dāng)今機(jī)頂盒中常見(jiàn)的電源軌。此設(shè)計(jì)的主要目標(biāo)是實(shí)現(xiàn)低成本、小尺寸、低待機(jī)功耗以及高效率，從而幫助客戶(hù)滿足有關(guān) STB 功耗的新監(jiān)管準(zhǔn)則。
測(cè)試報(bào)告: PDF
原理圖: PDF
參考設(shè)計(jì)

TIDA-01451 — 適用于機(jī)頂盒的電源開(kāi)關(guān)參考設(shè)計(jì)

TIDA-01451 參考設(shè)計(jì)的功能模擬機(jī)頂盒的配電情況。通過(guò)使用集成負(fù)載開(kāi)關(guān)來(lái)控制電源軌，可根據(jù)用戶(hù)需求打開(kāi)或關(guān)閉每個(gè)電源軌。關(guān)閉未使用的電源軌可減少功率損耗并有助于達(dá)到能源合規(guī)性標(biāo)準(zhǔn)（如 Energy Star）。置于輸入端的保險(xiǎn)絲可以管理熱插拔瞬變，并保護(hù)下游的直流/直流轉(zhuǎn)換器免受過(guò)高或過(guò)低輸入電壓損壞，從而降低終端設(shè)備的返修率。
設(shè)計(jì)指南: PDF
原理圖: PDF
封裝 引腳 CAD 符號(hào)、封裝和 3D 模型
SOT-SC70 (DCK) 5 Ultra Librarian

訂購(gòu)和質(zhì)量

包含信息：
  • RoHS
  • REACH
  • 器件標(biāo)識(shí)
  • 引腳鍍層/焊球材料
  • MSL 等級(jí)/回流焊峰值溫度
  • MTBF/時(shí)基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續(xù)可靠性監(jiān)測(cè)
包含信息：
  • 制造廠地點(diǎn)
  • 封裝廠地點(diǎn)

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