The TPS3807 family microprocessor supervisory circuits monitor system voltages as low as 1.225V. These devices assert an open-drain RSTVDD signal when the VDD voltage drops below a preset threshold. The RSTVDD output remains asserted until the VDD voltage returns above its threshold. The device also provides an additional RSTSENSE output for a SENSE input with adjustable thresholds and hysteresis.
The TPS3807 uses a precision reference to achieve 1% threshold accuracy. The TPS3807 has a very low typical quiescent current of 3.5µA, so it is well-suited to battery-powered applications. It is available in a small SC70-5 package, which is half the size of a SOT-23 package, and is fully specified over a temperature range of -40°C to +85°C.
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| Number of supplies monitored | 1, 2 |
| Threshold voltage 1 (typ) (V) | 3 |
| Features | Complimentary output, Separate VDD & sense, Undervoltage monitor only |
| Reset threshold accuracy (%) | 1 |
| Iq (typ) (mA) | 0.0035 |
| Output driver type/reset output | Active-low, Open-drain |
| Time delay (ms) | 0 |
| Supply voltage (min) (V) | 1.8 |
| Supply voltage (max) (V) | 6.5 |
| Rating | Catalog |
| Watchdog timer WDI (s) | None |
| Operating temperature range (°C) | -40 to 85 |
| SOT-SC70 (DCK) | 5 | 4.2 mm² 2 x 2.1 |
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