0
ACTIVE
Rating |
Automotive |
Number of supplies monitored |
1 |
Threshold voltage 1 (typ) (V) |
0.84, 1.12, 1.16, 1.4, 1.67, 1.77, 2.33, 2.79, 3.08, 4.65, adjustable |
Features |
Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only |
Reset threshold accuracy (%) |
1 |
Iq (typ) (mA) |
0.0006 |
Output driver type/reset output |
Active-low, Open-drain |
Watchdog timer WDI (s) |
None |
Supply voltage (min) (V) |
1.7 |
Supply voltage (max) (V) |
6.5 |
Operating temperature range (°C) |
-40 to 125 |
SOT-23 (DBV)-6-8.12 mm² 2.9 x 2.8
The TPS3808E-Q1 family of microprocessor supervisory circuits monitors 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 manual reset (MR) return above the respective thresholds.
The TPS3808E-Q1 device uses a precision reference to achieve 0.5% threshold accuracy. 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 between 1.25ms and 150s by connecting the CT pin to an external capacitor. The TPS3808E device has a very low typical quiescent current of 0.6µA, and is designed for battery-powered applications. The TPS3808E-Q1 is available in the SOT-23-6 , and is fully specified over a temperature range of –40°C to 125°C (TJ).
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