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.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS22917x 1 V–5.5-V, 2-A, 80-mΩ Ultra-Low Leakage Load Switch datasheet (Rev. B) | PDF | HTML | 15 Dec 2021 |
| E-book | 11 Ways to Protect Your Power Path | 03 Jul 2019 | ||
| Application brief | Making the Switch to an Integrated Load Switch | 11 Jun 2019 | ||
| Application note | Integrated Load Switches Versus Discrete MOSFETs (Rev. A) | 06 May 2019 | ||
| Application note | Load Switch Thermal Considerations (Rev. A) | 11 Oct 2018 | ||
| Application note | Basics of Load Switches (Rev. A) | 05 Sep 2018 | ||
| User guide | TPS22917 Load Switch Evaluation Module | 05 Oct 2017 | ||
| Application note | Selecting a Load Switch to Replace a Discrete Solution | 30 Apr 2017 | ||
| Application note | Timing of Load Switches | 27 Apr 2017 | ||
| Application note | Fundamentals of On-Resistance in Load Switches | 09 Jun 2016 | ||
| Application note | Quiescent Current vs Shutdown Current for Load Switch Power Consumption | 30 Mar 2016 | ||
| Application note | Managing Inrush Current (Rev. A) | 28 May 2015 |
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