TPS22917
- Input operating voltage range (VIN): 1 V to 5.5 V
- Maximum continuous current (IMAX): 2 A
- On-resistance (RON):
- 5 VIN = 80 mΩ (typical)
- 1.8 VIN = 120 mΩ (typical)
- 1 VIN = 220 mΩ (typical)
- Ultra-low power consumption:
- ON state (IQ): 0.5 µA (typical)
- OFF state (ISD): 10 nA (typical)
- Smart ON pin pulldown (RPD):
- ON ≥ VIH (ION): 10 nA (maximum)
- ON ≤ VIL (RPD): 750 kΩ (typical)
- Adjustable turn ON limits inrush current
(tON):
- 5-V tON = 100 µs at 72 mV/µs (CT = open)
- 5-V tON = 4000 µs at 2.3 mV/µs (CT = 1000 pF)
- Adjustable output discharge and fall time:
- Optional QOD resistance ≥ 150 Ω (internal)
- Always-ON true Reverse Current Blocking (RCB):
- Activation current (IRCB): –500 mA (typical)
- Reverse leakage (IIN,RCB): –1 µA (maximum)
The TPS22917x device is a small, single channel load switch using a low leakage P-Channel MOSFET for minimum power loss. Advanced gate control design supports operating voltages as low as 1 V with minimal increase in ON-Resistance and power loss.
The Rise and Fall times can be independently adjusted with external components for system level optimizations. The timing capacitor (CT) and turn on time can be adjusted to manage inrush current without adding unnecessary system delays. The output discharge resistance (QOD) can be used to adjust the output fall time. Connect the QOD pin directly to the output for a fastest fall time or leave it open for the slowest fall time.
The switch ON state is controlled by a digital input that can interface directly with low-voltage control signals. The TPS22917 uses active high enable logic, while the TPS22917L uses active low. When power is first applied, a Smart Pulldown is used to keep the ON pin from floating until system sequencing is complete. After the ON pin is deliberately driven high (≥VIH), the Smart Pulldown (RPD) is disconnected to prevent unnecessary power loss.
The TPS22917x device is available in a leaded SOT-23 package (DBV) which allows visual inspection of solder joints. The device is characterized for operation over a temperature range of –40°C to 125°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 | TPS22917x 1 V–5.5-V, 2-A, 80-mΩ Ultra-Low Leakage Load Switch datasheet (Rev. B) | PDF | HTML | 2021/12/15 | ||
| 電子書 | 11 Ways to Protect Your Power Path | 2019/7/3 | ||||
| Application brief | Making the Switch to an Integrated Load Switch | 2019/6/11 | ||||
| 應用說明 | Integrated Load Switches Versus Discrete MOSFETs (Rev. A) | 2019/5/6 | ||||
| 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 | ||||
| 應用說明 | Fundamentals of On-Resistance in Load Switches | 2016/6/9 | ||||
| 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
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)。
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 6 | 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。