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Low-quiescent current supervisor with programmable delay & manual reset
VQFN-20Manufacturer:
Mfr.Part #:
TPS3808G18DRVR
Datasheet:
Number Of Supplies Monitored:
1
Threshold Voltage 1 (typ) (V):
0.405, 0.84, 1.16, 1.4, 1.67, 1.77, 2.33, 2.79, 3.07, 4.65
Features:
Manual reset capable
Reset Threshold Accuracy (%):
2
EDA/CAD Models:
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The TPS3808 family of microprocessor supervisory circuits monitors system voltages from 0.4 V to 5 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 TPS3808 device uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset delay time can be set to 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25 ms and 10 s by connecting the CT pin to an external capacitor. The TPS3808 device has a very low typical quiescent current of 2.4 µA, so it is well-suited to battery-powered applications. It is available in the SOT-23 and 2-mm × 2-mm WSON packages, and is fully specified over a temperature range of –40°C to 125°C (TJ).
Number of supplies monitored | 1 | Threshold voltage 1 (typ) (V) | 0.405, 0.84, 1.16, 1.4, 1.67, 1.77, 2.33, 2.79, 3.07, 4.65 |
Features | Manual reset capable | Reset threshold accuracy (%) | 2 |
Iq (typ) (mA) | 0.0024 | Output driver type/reset output | Active-low, Open-drain |
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 125 |
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