The TPS386000-Q1 family of voltage supervisors can monitor four power rails that are greater than 0.4 V and one power rail less than 0.4 V (including negative voltage) with a 0.25% (typical) threshold accuracy. Each of the four supervisory circuits (SVS-n) assert a RESETn or RESETn output signal when the SENSEm input voltage drops below the programmed threshold. With external resistors, the threshold of each SVS-n can be programmed (where n = 1, 2, 3, 4 and m = 1, 2, 3, 4L, 4H).
Each SVS-n has a programmable delay before releasing RESETn or RESETn. The delay time can be set from 1.4 ms to 10 s through the CTn pin connection. Only SVS-1 has an active-low manual reset (MR) input; a logic-low input to MR asserts RESET1 or RESET1.
SVS-4 monitors the threshold window using two comparators. The extra comparator can be configured as a fifth SVS to monitor negative voltage with voltage reference output VREF.
The TPS386000-Q1 device has a very low quiescent current of 12 µA (typical) and is available in a small, 4-mm × 4-mm, VQFN-20 package.
| Number of supplies monitored | 3, 4 |
| Threshold voltage 1 (typ) (V) | 0.4 |
| Features | Manual reset capable, Negative voltage monitoring, Timeout watchdog, Undervoltage and overvoltage monitor, Watchdog timer |
| Reset threshold accuracy (%) | 0.5 |
| Iq (typ) (mA) | 0.012 |
| Output driver type/reset output | Active-low, Open-drain |
| Time delay (ms) | 20, 300 |
| Supply voltage (min) (V) | 1.8 |
| Supply voltage (max) (V) | 6.5 |
| Rating | Automotive |
| Watchdog timer WDI (s) | 0.6 |
| Operating temperature range (°C) | -40 to 125 |
| VQFN (RGP) | 20 | 16 mm² 4 x 4 |
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