LTC2934 Series

Ultra-Low Power Adjustable Supervisor with Power-Fail Output

Catalog

Ultra-Low Power Adjustable Supervisor with Power-Fail Output

Part	Reset	Package / Case	Voltage - Threshold	Supplier Device Package	Mounting Type	Output	Number of Voltages Monitored	Operating Temperature [Max]	Operating Temperature [Min]	Type	Reset Timeout
Analog Devices LTC2934CTS8-1#TRPBF	Active Low	SOT-23-8 Thin TSOT-23-8	Adjustable/Selectable	TSOT-23-8	Surface Mount	Open Drain or Open Collector	1	70 °C	0 °C	Simple Reset/Power-On Reset	Adjustable/Selectable
Analog Devices LTC2934CDC-1	Active Low	8-WFDFN Exposed Pad	Adjustable/Selectable	8-DFN (2x2)	Surface Mount	Open Drain or Open Collector	1	70 °C	0 °C	Simple Reset/Power-On Reset	Adjustable/Selectable
Analog Devices LTC2934ITS8-2#TRMPBF	Active Low	SOT-23-8 Thin TSOT-23-8	Adjustable/Selectable	TSOT-23-8	Surface Mount	Push-Pull Totem Pole	1	85 °C	-40 °C	Simple Reset/Power-On Reset	Adjustable/Selectable
Analog Devices LTC2934CDC-1#TRPBF	Active Low	8-WFDFN Exposed Pad	Adjustable/Selectable	8-DFN (2x2)	Surface Mount	Open Drain or Open Collector	1	70 °C	0 °C	Simple Reset/Power-On Reset	Adjustable/Selectable
Analog Devices LTC2934IDC-2	Active Low	8-WFDFN Exposed Pad	Adjustable/Selectable	8-DFN (2x2)	Surface Mount	Push-Pull Totem Pole	1	85 °C	-40 °C	Simple Reset/Power-On Reset	Adjustable/Selectable
Analog Devices LTC2934CTS8-2#TRMPBF	Active Low	SOT-23-8 Thin TSOT-23-8	Adjustable/Selectable	TSOT-23-8	Surface Mount	Push-Pull Totem Pole	1	70 °C	0 °C	Simple Reset/Power-On Reset	Adjustable/Selectable
Analog Devices LTC2934CDC-1#TRMPBF	Active Low	8-WFDFN Exposed Pad	Adjustable/Selectable	8-DFN (2x2)	Surface Mount	Open Drain or Open Collector	1	70 °C	0 °C	Simple Reset/Power-On Reset	Adjustable/Selectable
Analog Devices LTC2934IDC-1#TRMPBF	Active Low	8-WFDFN Exposed Pad	Adjustable/Selectable	8-DFN (2x2)	Surface Mount	Open Drain or Open Collector	1	85 °C	-40 °C	Simple Reset/Power-On Reset	Adjustable/Selectable
Analog Devices LTC2934CTS8-1#TRMPBF	Active Low	SOT-23-8 Thin TSOT-23-8	Adjustable/Selectable	TSOT-23-8	Surface Mount	Open Drain or Open Collector	1	70 °C	0 °C	Simple Reset/Power-On Reset	Adjustable/Selectable

Catalog

Ultra-Low Power Adjustable Supervisor with Power-Fail Output

Key Features

• 500nA Quiescent Current

• ±1.5% (Max) Accuracy over Temperature

• Operates Down to 1.6V Supply

• Adjustable Reset Threshold

• Adjustable Power-Fail Threshold

• Early Warning Power-Fail Output

• Selectable 15ms or 200ms Reset Timeout

• Manual Reset Input

• Compact 8-Lead, 2mm × 2mm DFN and TSOT-23 (ThinSOT™) Packages

Description

The LTC2934 ultra-low power voltage monitor provides system initialization, power-fail warning and reset generation functions. Low quiescent current (500nA typical) makes the LTC2934 an ideal choice for battery-operated applications.Precision power-fail and reset voltages can be conﬁgured independently. Early warning of an impending low voltage condition is provided at the power-fail output (PFO) when the PFI input falls below 0.4V. Supervisory circuits monitor the ADJ input and pullRSTlow when ADJ falls below 0.4V. When ADJ is rising from an under-threshold condition, an internal reset timer is started after exceeding the ADJ threshold by 5%. The reset timeout delays the return of theRSToutput to a high state. A pushbutton switch connected to theMRinput is typically used to force a manual reset. OutputsRSTandPFOare available with open-drain (LTC2934-1) or active pull-up circuits (LTC2934-2). Operating temperature range is from –40ºC to 85ºC.ApplicationsPortable EquipmentBattery-Powered EquipmentSecurity SystemsPoint-of-Sale DevicesWireless Systems