The TPS3808Gxx-Q1 microprocessor supervisory circuits monitor 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 MR return above their thresholds.
The TPS3808Gxx-Q1 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 from 1.25 ms to 10 s by connecting the CT pin to an external capacitor. The TPS3808Gxx-Q1 has a very low typical quiescent current of 2.4 μA, so it is well suited for battery-powered applications. The device is available in a small SOT-23 package (one option available in WSON) and is fully specified over a temperature range of –40°C to +125°C (TJ).
For more information about TI's voltage supervisor portfolio, visit the Supervisor and Reset IC Overview Page page.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS3808Gxx-Q1 | SOT-23 (6) | 2.90 mm × 1.60 mm |
WSON (6) | 2.00 mm × 2.00 mm |
Changes from I Revision (June 2015) to J Revision
Changes from H Revision (June 2012) to I Revision
Changes from G Revision (November, 2010) to H Revision
ORDERABLE PART NUMBER | NOMINAL SUPPLY VOLTAGE | THRESHOLD VOLTAGE (VIT) |
---|---|---|
TPS3808G01QDRVRQ1 | Adjustable | 0.405 V |
TPS3808G01QDBVRQ1 | ||
TPS3808G12QDBVRQ1 | 1.2 V | 1.12 V |
TPS3808G125QDBVRQ1 | 1.25 V | 1.16 V |
TPS3808G15QDBVRQ1 | 1.5 V | 1.4 V |
TPS3808G18QDBVRQ1 | 1.8 V | 1.67 V |
TPS3808G30QDBVRQ1 | 3 V | 2.79 V |
TPS3808G33QDBVRQ1 | 3.3 V | 3.07 V |
TPS3808G50QDBVRQ1 | 5 V | 4.65 V |