The TPS3890 is a precision voltage supervisor with low-quiescent current that monitors system voltages as low as 1.15 V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and manual reset (MR) return above the respective thresholds. The TPS3890 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 40 µs and 30 s by connecting the CT pin to an external capacitor. The TPS3890 has a very low quiescent current of 2.1 µA and is available in a small 1.5-mm × 1.5-mm package, making the device well-suited for battery-powered and space-constrained applications. The device is fully specified over a temperature range of –40°C to +125°C (TJ).
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS3890 Low Quiescent Current, 1% Accurate Supervisor with Programmable Delay datasheet (Rev. A) | PDF | HTML | 24 May 2016 |
| More literature | Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) | 17 Mar 2020 | ||
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 28 Jun 2019 | ||
| More literature | Latching a Voltage Supervisor (Reset IC) (Rev. A) | 05 Apr 2019 | ||
| More literature | Comparing Voltage and Processor Monitoring Solutions | 05 Apr 2019 | ||
| More literature | Using The Manual Reset On Voltage Supervisors to Debounce a Pushbutton Switch | 08 Mar 2019 | ||
| Circuit design | Auxiliary circuits for high-performance audio | 16 Jan 2019 | ||
| More literature | Mitigating the Voltage Glitch on the Output of a Voltage Supervisor (Reset IC) D | 27 Jun 2018 | ||
| More literature | How Comparator Topology Influences Propagation Delay | 05 Apr 2017 | ||
| Technical article | Tips and tricks for optimizing your voltage supervisor | 07 Mar 2017 |
For additional terms or required resources, click any title below to view the detail page where available.
PSEMTHR24EVM-081 is the base board for the TPS23881 and TPS23882 PSE controllers. This board contains 24 2-Pair / 4-Pair ports that can that can be used to send up to 30W/port for IEEE 802.3at applications and up to 90W/port for IEEE 802.3bt applications.
| Package | Pins | Download |
|---|---|---|
| WSON (DSE) | 6 | View options |
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.