TPS3808E Series

600nA ultra-low quiescent current supervisor with programmable delay and manual reset

Catalog

600nA ultra-low quiescent current supervisor with programmable delay and manual reset

Part	Supplier Device Package	Number of Voltages Monitored	Reset	Type	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Threshold	Reset Timeout [Min]	Mounting Type	Package / Case	Output
Texas Instruments TPS3808EG25DBVR	SOT-23-6	1	Active Low	Monitor	-40 °C	125 ¯C	2.33 V	180 ms	Surface Mount	SOT-23-6	Open Drain or Open Collector
Texas Instruments TPS3808EG18DBVR	SOT-23-6	1	Active Low	Monitor	-40 °C	125 ¯C	1.67 V	180 ms	Surface Mount	SOT-23-6	Open Drain or Open Collector
Texas Instruments TPS3808EG09DBVR	SOT-23-6	1	Active Low	Monitor	-40 °C	125 ¯C	0.84 V	180 ms	Surface Mount	SOT-23-6	Open Drain or Open Collector
Texas Instruments TPS3808EG12DBVR	SOT-23-6	1	Active Low	Monitor	-40 °C	125 ¯C	1.12 V	180 ms	Surface Mount	SOT-23-6	Open Drain or Open Collector
Texas Instruments TPS3808EG19DBVR	SOT-23-6	1	Active Low	Monitor	-40 °C	125 ¯C	1.77 V	180 ms	Surface Mount	SOT-23-6	Open Drain or Open Collector
Texas Instruments TPS3808EG33DBVR	SOT-23-6	1	Active Low	Monitor	-40 °C	125 ¯C	3.07 V	180 ms	Surface Mount	SOT-23-6	Open Drain or Open Collector
Texas Instruments TPS3808EG01DBVR	SOT-23-6	1	Active Low	Monitor	-40 °C	125 ¯C	0.405 V	180 ms	Surface Mount	SOT-23-6	Open Drain or Open Collector

Catalog

600nA ultra-low quiescent current supervisor with programmable delay and manual reset

Key Features

• Undervoltage monitoring for power railsReliable monitoring with high threshold accuracy (1% typical)Fixed voltage threshold options from 0.9V to 5VAdjustable voltage option available (0.405)Separate Sense pin for monitoring and VDD pin for powerDevice temperature grade 1: -40°C to +125°CMiniature solution with ultra-low power consumption0.6µA typical quiescent currentCompact 6-pin SOT-23 package (2.99mm x 1.6mm)Highly configurable reset time delay to prevent unsafe power onAdjustable from 1.25ms to 10sSeparate Manual Reset Input (MR) to assert RESET output on demandUndervoltage monitoring for power railsReliable monitoring with high threshold accuracy (1% typical)Fixed voltage threshold options from 0.9V to 5VAdjustable voltage option available (0.405)Separate Sense pin for monitoring and VDD pin for powerDevice temperature grade 1: -40°C to +125°CMiniature solution with ultra-low power consumption0.6µA typical quiescent currentCompact 6-pin SOT-23 package (2.99mm x 1.6mm)Highly configurable reset time delay to prevent unsafe power onAdjustable from 1.25ms to 10sSeparate Manual Reset Input (MR) to assert RESET output on demand

Description

The TPS3808E 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 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 10s 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 is available in the SOT-23 (6) , and is fully specified over a temperature range of –40°C to 125°C (TJ). The TPS3808E 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 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 10s 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 is available in the SOT-23 (6) , and is fully specified over a temperature range of –40°C to 125°C (TJ).