| Number of supplies monitored | 1 |
| Threshold voltage 1 (Typ) (V) | Adjustable, 1.12, 1.16, 1.4, 1.67, 2.79, 3.07, 4.65 |
| Features | Manual reset capable |
| Reset threshold accuracy (%) | 2 |
| Output driver type/reset output | Active-low, Open-drain |
| Time delay (ms) | Programmable |
| TI functional safety category | Functional Safety-Capable |
| Rating | Automotive |
| Watchdog timer WDI (sec) | None |
| Operating temperature range (C) | -40 to 125 |
- Qualified for Automotive Applications
- Power-On Reset Generator With Adjustable Delay Time: 1.25ms to 10s
- Very Low Quiescent Current: 2.4μA Typical
- High Threshold Accuracy: 0.5% Typical
- Fixed Threshold Voltages for Standard Voltage Rails From 1.2V to 5V and Adjustable Voltage Down to 0.4V Are Available
- Manual Reset (MR) Input
- Open-Drain RESET Output
- Temperature Range: –40°C to +125°C
- Small SOT-23 Package and WSON Package (TPS3808G01QDRVRQ1 only)
The TPS3808Gxx-Q1 microprocessor supervisory circuits monitor system voltages from 0.4V to 5V, 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 MR return above their thresholds.
The TPS3808Gxx-Q1 device uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset delay time can be set to 20ms by disconnecting the CT pin, 300ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted from 1.25ms to 10s by connecting the CT pin to an external capacitor. The TPS3808Gxx-Q1 has a very low typical quiescent current of 2.4μA, so it is well suited for battery-powered applications. The device is available in a small SOT-23 package (one option available in WSON) and is fully specified over a temperature range of –40°C to +125°C (TJ).
For more information about TI?s voltage supervisor portfolio, visit the Supervisor and Reset IC Overview Page page.