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TPS22944

現行

具電流限制和啟用高電位作動的 5.5V、0.1-A、500-mΩ 負載開關

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產品規格表

TPS22944

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 1 Vin (min) (V) 1.62 Vin (max) (V) 5.5 Imax (A) 0.08 Ron (typ) (mΩ) 500 Shutdown current (ISD) (typ) (µA) 1 Quiescent current (Iq) (typ) (µA) 40 Soft start Fixed Rise Time Current limit type Fixed Features Thermal shutdown Rating Catalog Operating temperature range (°C) -40 to 85 FET Internal Device type Load switches Function Inrush current control, Thermal shutdown
Number of channels 1 Vin (min) (V) 1.62 Vin (max) (V) 5.5 Imax (A) 0.08 Ron (typ) (mΩ) 500 Shutdown current (ISD) (typ) (µA) 1 Quiescent current (Iq) (typ) (µA) 40 Soft start Fixed Rise Time Current limit type Fixed Features Thermal shutdown Rating Catalog Operating temperature range (°C) -40 to 85 FET Internal Device type Load switches Function Inrush current control, Thermal shutdown
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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TPS22950 現行 具有可調整電流限制的 5.5-V、2-A、40-mΩ 負載開關 Same functionality with lower on resistance and adjustable current limit.

技術文件

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類型 標題 日期
* Data sheet TPS2294x Low-input-voltage Current-limited Load Switches With Shut Off And Auto-Restart Feature datasheet (Rev. D) PDF | HTML 2014年 7月 10日
Application note Load Switch Thermal Considerations (Rev. A) 2018年 10月 11日
Application note Basics of Load Switches (Rev. A) 2018年 9月 5日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Application note Selecting a Load Switch to Replace a Discrete Solution 2017年 4月 30日
Application note Timing of Load Switches 2017年 4月 27日
Application note Managing Inrush Current (Rev. A) 2015年 5月 28日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

TPS22945EVM-082 — TPS22945 評估模組

The TPS22945EVM-082 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS22945 load switch. The VIN and VOUT connections to the device and the PCB layout routing provide a low resistance pathway into and out of the device under test. Test point connections allow the (...)

使用指南: PDF
TI.com 無法提供
模擬型號

TPS22944 TINA-TI Transient Reference Design

SLVMCA7.TSC (70 KB) - TINA-TI Reference Design
下載
模擬型號

TPS22944 TINA-TI Transient Spice Model

SLVMCA6.ZIP (22 KB) - TINA-TI Spice Model
下載
模擬型號

TPS22944 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMAG7A.ZIP (58 KB) - PSpice Model
下載
模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
要求
參考設計

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Design guide: PDF
電路圖: PDF
參考設計

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Design guide: PDF
電路圖: PDF
參考設計

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This reference design showcases a cost-optimized and scalable ADC-based AC/DC binary input module (BIM) architecture with reinforced isolation. The 16 channels of a 10- or 12-bit SAR ADC are used for sensing multiple binary inputs. The op amps, in addition to keeping the cost per-channel low, (...)
Design guide: PDF
電路圖: PDF
參考設計

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此參考設計為一簡化架構，可產生隔離式電源供應，適用於測量隔離電壓與電流的隔離式放大器。具 5-V 輸入之強化隔離操作的完全整合式 DC/DC 轉換器，並具備可設定 5-V 或 5.4-V 輸出 (適用於低壓降穩壓器 (LDO) 的空餘空間) 可產生隔離電源。連接到 ±50-mV 輸入範圍隔離放大器，且配置爲通道隔離輸入的分流，可測量電流。連接到 ±250-mV 或 ±12-V 輸入範圍隔離放大器，且配置爲群組隔離輸入的潛在分頻器，可測量電壓。隔離放大器介面直接輸出至 24 位 Δ Σ 類比轉數位轉換器 (ADC)，或使用增益放大器擴展至 (...)
Design guide: PDF
電路圖: PDF
參考設計

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This reference design accurately measures 16-channel AC voltage and current inputs using a precision 16-bit SAR ADC over a wide input range. This range covers protection and measurement requirements (including sampling requirements as per IEC 61850-9-2), which simplifies system design and improves (...)
Design guide: PDF
電路圖: PDF
參考設計

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This reference design showcases space- and cost-optimized architecture for a 4-channel DC-input binary module with improved measurement accuracy and status indication using only two products simplifying system design. MCU-based binary module improves measurement resolution of binary input (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-010008 — 適合於電網應用之瞬態保護的平箝制 TVS 架構參考設計

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Design guide: PDF
電路圖: PDF
參考設計

TIDA-01214 — 採用16 位元 ADC 和數位隔離器的隔離式高準確度類比輸入模組參考設計

This reference design provides accurate measurements of AC voltage and current inputs using a precision 16-bit SAR ADC over a wide input range, covering protection and measurement range (including sampling requirements of IEC 61850-9-2), simplifying system design and improving trip time (...)
Design guide: PDF
電路圖: PDF
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