LTC2919 Series

Precision Triple/Dual Input UV, OV and Negative Voltage Monitor

Catalog

Precision Triple/Dual Input UV, OV and Negative Voltage Monitor

Part	Type	Output	Voltage - Threshold	Voltage - Threshold	Operating Temperature [Max]	Operating Temperature [Min]	Number of Voltages Monitored	Reset	Reset Timeout [Min]	Package / Case	Supplier Device Package	Mounting Type	Package / Case [x]	Package / Case [x]
Analog Devices LTC2919CDDB-5#TRMPBF	Multi-Voltage Supervisor	Open Drain or Open Collector	4.425 V	Adj	70 °C	0 °C	3	Active Low	140 ms	10-WFDFN Exposed Pad	10-DFN (3x2)	Surface Mount
Analog Devices LTC2919HMS-5#TRPBF	Multi-Voltage Supervisor	Open Drain or Open Collector	4.425 V	Adj	125 °C	-40 °C	3	Active Low	140 ms	10-MSOP 10-TFSOP	10-MSOP	Surface Mount	3 mm	0.118 in
Analog Devices LTC2919HMS-3.3#TRPBF	Multi-Voltage Supervisor	Open Drain or Open Collector	2.921 V		125 °C	-40 °C	3	Active Low	140 ms	10-MSOP 10-TFSOP	10-MSOP	Surface Mount	3 mm	0.118 in
Analog Devices LTC2919HDDB-2.5#TRMPBF	Multi-Voltage Supervisor	Open Drain or Open Collector	2.213 V	Adj	125 °C	-40 °C	3	Active Low	140 ms	10-WFDFN Exposed Pad	10-DFN (3x2)	Surface Mount
Analog Devices LTC2919CMS-5#PBF	Multi-Voltage Supervisor	Open Drain or Open Collector	4.425 V	Adj	70 °C	0 °C	3	Active Low	140 ms	10-MSOP 10-TFSOP	10-MSOP	Surface Mount	3 mm	0.118 in
Analog Devices LTC2919HMS-2.5#PBF	Multi-Voltage Supervisor	Open Drain or Open Collector	2.213 V	Adj	125 °C	-40 °C	3	Active Low	140 ms	10-MSOP 10-TFSOP	10-MSOP	Surface Mount	3 mm	0.118 in
Analog Devices LTC2919HDDB-5#TRPBF	Multi-Voltage Supervisor	Open Drain or Open Collector	4.425 V	Adj	125 °C	-40 °C	3	Active Low	140 ms	10-WFDFN Exposed Pad	10-DFN (3x2)	Surface Mount
Analog Devices LTC2919CDDB-2.5#TRPBF	Multi-Voltage Supervisor	Open Drain or Open Collector	2.213 V	Adj	70 °C	0 °C	3	Active Low	140 ms	10-WFDFN Exposed Pad	10-DFN (3x2)	Surface Mount
Analog Devices LTC2919HMS-2.5#TRPBF	Multi-Voltage Supervisor	Open Drain or Open Collector	2.213 V	Adj	125 °C	-40 °C	3	Active Low	140 ms	10-MSOP 10-TFSOP	10-MSOP	Surface Mount	3 mm	0.118 in
Analog Devices LTC2919CMS-3.3#TRPBF	Multi-Voltage Supervisor	Open Drain or Open Collector	2.921 V		70 °C	0 °C	3	Active Low	140 ms	10-MSOP 10-TFSOP	10-MSOP	Surface Mount	3 mm	0.118 in

Catalog

Precision Triple/Dual Input UV, OV and Negative Voltage Monitor

Key Features

• Two Low Voltage Adjustable Inputs (0.5V)

• Accurate UVLO Provides a Third Monitor Input

• Open-DrainRST, OUT1 and OUT2 Outputs

• Pin Selectable Input Polarity Allows Negative, UV and OV Monitoring

• Guaranteed Threshold Accuracy: ±1.5%

• 6.5V Shunt Regulator for High Voltage Operation

• Low 50µA Quiescent Current

• Buffered 1V Reference for Negative Supply Offset

• Input Glitch Rejection

• Adjustable Reset Timeout Period

• Selectable Internal Timeout Saves Components

• Outputs Guaranteed Low with VCC= 0.5V

• Space Saving 10-Lead 3mm × 2mm DFN and MSOP Packages

• AEC-Q100 Qualified for Automotive Applications

Description

The LTC2919 is a triple/dual input monitor intended for a variety of system monitoring applications. Polarity selection and a buffered reference output allow the LTC2919 to monitor positive and negative supplies for undervoltage (UV) and overvoltage (OV) conditions.The two adjustable inputs have a nominal 0.5V threshold, featuring tight 1.5% threshold accuracy over the entire operating temperature range. Glitch filtering ensures outputs operate reliably without false triggering. An accurate threshold at the VCCpin provides a third input supply monitor for a 2.5V, 3.3V or 5V supply.Two independent output pins indicate the status of each adjustable input. A third common output provides a configurable reset timeout that may be set by an accurate internal 200ms timer, programmed with an external capacitor, or disabled for a fast response. A three-state input pin sets the input polarity of each adjustable input without requiring any external components.The LTC2919 provides a highly versatile, precise, space-conscious, micropower solution for supply monitoring.ApplicationsDesktop and Notebook ComputersNetwork ServersCore, I/O MonitorAutomotive