The TPS22970 is a small, space-saving load switch with controlled Turn-ON to reduce inrush current. The device contains an N-channel MOSFET that can operate over an input voltage range of 0.65 V to 3.6 V and pulsed switch currents up to 4 A. An integrated charge pump biases the NMOS switch in order to achieve a minimum switch ON resistance (RON). The switch is controlled by an on and off input (ON), which is capable of interfacing directly with low-voltage control signals.
The TPS22970 is capable of thermal shutdown when the junction temperature is above the threshold, turning the switch off. The switch turns on again when the junction temperature stabilizes to a safe range.
The TPS22970 has a 150-Ω on-chip resistor for quick discharge of the output when switch is disabled to avoid any unknown state caused by floating supply to the downstream load.
The TPS22970 has an internally controlled rise time in order to reduce inrush current.
The TPS22970 is available in an ultra-small, space saving 8-pin WCSP package and is characterized for operation over the free-air temperature range of –40°C to +105°C.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS22970 3.6-V, 4-A, 4.7-mΩ On-Resistance Load Switch datasheet (Rev. A) | PDF | HTML | 20 Jul 2017 |
| Application note | Load Switch Thermal Considerations (Rev. A) | 11 Oct 2018 | ||
| Application note | Basics of Load Switches (Rev. A) | 05 Sep 2018 | ||
| Application note | Selecting a Load Switch to Replace a Discrete Solution | 30 Apr 2017 | ||
| Application note | Timing of Load Switches | 27 Apr 2017 | ||
| User guide | TPS22970 Load Switch Evaluation Module | 30 Nov 2016 | ||
| 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 |
For additional terms or required resources, click any title below to view the detail page where available.
The TPS22970 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS22970 load switch. The TPS22970EVM allows the user to apply different input voltages (0.65-V to 3.6-V) under different loading conditions (0-A to 4-A) to the TPS22970. Output, input, and switching (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| DSBGA (YZP) | 8 | Ultra Librarian |
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