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2022-09-24 21:48:02
TPS3808G09DBVR Low Quiescent Current Monitor with Programmable Delay
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The TPS 3808 series microprocessor supervisory circuit monitors system voltages from 0.4V to 5V and asserts an open-drain reset signal when the sense voltage falls below a preset threshold or when the manual reset (MR) pin falls to a logic low. The reset output remains low for a user-adjustable delay time after the sense voltage and manual reset (MR) return exceeds the corresponding threshold.
The TPS 3808 device uses an accurate reference to achieve a 0.5% threshold accuracy of 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 between 1.25ms and 10s by connecting the CT pin to an external capacitor by the user Adjustment. The TPS 3808 device has a very low typical quiescent current of 2.4A, making it ideal for battery powered applications. It is available in SOT-23 and 2mm x 2mm WSON packages and is fully specified over the -40°C to 125°C (TJ) temperature range.
Power Reset Generator: 1.25ms to 10s Very Low Quiescent Current: 2.4 Typical High Threshold Accuracy: 0.5% Standard Voltage Rails Fixed Threshold Voltage from 0.9 V to 5V, Adjustable Voltage Down to 0.4 V Manually Available Reset (MR) Input Open Reset Output Temperature Range: -40°C to 125°C Small SOT-23 and 2mm × 2mm WSON packages.