TPS22954
- Integrated Single Channel Load Switch
- Input Voltage Range: 0.7 V to 5.7 V
- RON Resistance
- RON = 14 mΩ at VIN = 5 V (VBIAS = 5 V)
- 5-A Maximum Continuous Switch Current
- Adjustable Undervoltage Lockout Threshold (UVLO)
- Adjustable Voltage Supervisor with Power Good (PG) Indicator
- Adjustable Output Slew Rate Control
- Enhanced Quick Output Discharge Remains Active after Power is Removed (TPS22954 Only)
- 15 Ω (Typ) Discharges 100 µF Within 10 ms
- Reverse Current Blocking when Disabled (TPS22953 Only)
- Automatic Restart after Supervisor Fault Detection When Enabled
- Thermal Shutdown
- Low Quiescent Current ≤ 50 µA
- SON 10-pin Package with Thermal Pad
- ESD Performance Tested Per JESD 22
- 2-kV HBM and 750-V CDM
The TPS22953/54 are small, single channel load switches with controlled turn on. The devices contain a N-channel MOSFET that can operate over an input voltage range of 0.7 V to 5.7 V and can support a maximum continuous current of 5 A.
The integrated adjustable undervoltage lockout (UVLO) and adjustable power good (PG) threshold provides voltage monitoring as well as robust power sequencing. The adjustable rise time control of the device greatly reduces inrush current for a wide variety of bulk load capacitances, thereby reducing or eliminating power supply droop. The switch is independently controlled by an on and off input (EN), which is capable of interfacing directly with low-voltage control signals. A 15-Ω on-chip load is integrated into the device for a quick discharge of the output when switch is disabled. The enhanced Quick Output Discharge (QOD) remains active for short time after power is removed from the device to finish discharging the output.
The TPS22953/54 are available in small, space-saving 10-SON packages with integrated thermal pad allowing for high power dissipation. The device is characterized for operation over the free-air temperature range of –40°C to +105°C.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS2295x 5.7 V, 5 A, 14 mΩ On-Resistance Load Switch datasheet (Rev. D) | PDF | HTML | 2016/9/16 | ||
| 應用說明 | Load Switch Thermal Considerations (Rev. A) | 2018/10/11 | ||||
| 應用說明 | Basics of Load Switches (Rev. A) | 2018/9/5 | ||||
| 應用說明 | Selecting a Load Switch to Replace a Discrete Solution | 2017/4/30 | ||||
| 應用說明 | Timing of Load Switches | 2017/4/27 | ||||
| 類比設計期刊 | 2Q 2016 Analog Applications Journal Issue | 2016/4/26 | ||||
| 應用說明 | Quiescent Current vs Shutdown Current for Load Switch Power Consumption | 2016/3/30 | ||||
| 應用說明 | Managing Inrush Current (Rev. A) | 2015/5/28 |
設計與開發
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TPS22954EVM — TPS22954 5.5V、14mΩ 導通電阻負載開關評估模組
TPS22954 裝置是單通道低 RON 負載開關，操作電壓範圍為 0.7V 至 5.7V。TPS22954EVM 可提供 TPS22954 的兩種封裝版本 DSQ（0.4mm 接腳節距）和 DQC（0.5mm 接腳節距），以供評估。TPS22954 整合了電壓監控器，可透過 TPS22954EVM 上的外部電阻器設定。
TIDA-00399 — SSD 電力傳輸參考設計
TIDA-00399 設計在 M.2 外形中實作了 SSD 的完整電源傳輸解決方案。TPS22954 負載開關用於限制突波電流，並消除對系統輸入上獨立監控電路的需求。此設計經過測試，且包括 GUI、示範和使用指南。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DQC) | 10 | Ultra Librarian |
| WSON (DSQ) | 10 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。