The TPS3890-Q1 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-Q1 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 25 µs and 30 s by connecting the CT pin to an external capacitor. The TPS3890-Q1 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-Q1 Low Quiescent Current, 1% Accurate Supervisor with Programmable Delay datasheet (Rev. B) | 28 Feb 2018 |
| Technical article | 3 quiescent-current (Iq) specifications you need to understand | 12 Nov 2021 | |
| Functional safety information | TPS3890-Q1 Functional Safety FIT Rate and Failure Mode Distribution | 18 Dec 2019 | |
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 28 Jun 2019 | |
| Technical article | How voltage references and supervisors help achieve ASIL functional safety goals | 10 May 2019 | |
| User guide | TPS3890EVM-775 Evaluation | 31 Mar 2016 |
For additional terms or required resources, click any title below to view the detail page where available.
| 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.