LTC2919 - Precision Triple/Dual Input UV, OV and Negative Voltage Monitor

Features

  • Two Low Voltage Adjustable Inputs (0.5V)
  • Accurate UVLO Provides a Third Monitor Input
  • Open-Drain RST, 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
Designed for Automotive and Transportation Applications
AEC-Q100 generic family data available for specific packages


Typical Application

LTC2919 Typical Application
LTC2919 Typical Application

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 VCC pin 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.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTC2919CDDB-2.5#PBF 3x2 DFN-10 DDB C 05-08-1722 Yes
LTC2919CDDB-2.5#TRMPBF 3x2 DFN-10 DDB C 05-08-1722 Yes
LTC2919CDDB-2.5#TRPBF 3x2 DFN-10 DDB C 05-08-1722 Yes
LTC2919CDDB-3.3#PBF 3x2 DFN-10 DDB C 05-08-1722 Yes
LTC2919CDDB-3.3#TRMPBF 3x2 DFN-10 DDB C 05-08-1722 Yes
LTC2919CDDB-3.3#TRPBF 3x2 DFN-10 DDB C 05-08-1722 Yes
LTC2919CDDB-5#PBF 3x2 DFN-10 DDB C 05-08-1722 Yes
LTC2919CDDB-5#TRMPBF 3x2 DFN-10 DDB C 05-08-1722 Yes
LTC2919CDDB-5#TRPBF 3x2 DFN-10 DDB C 05-08-1722 Yes
LTC2919CMS-2.5#PBF MS-10 MS C 05-08-1661 Yes
LTC2919CMS-2.5#TRPBF MS-10 MS C 05-08-1661 Yes
LTC2919CMS-3.3#PBF MS-10 MS C 05-08-1661 Yes
LTC2919CMS-3.3#TRPBF MS-10 MS C 05-08-1661 Yes
LTC2919CMS-5#PBF MS-10 MS C 05-08-1661 Yes
LTC2919CMS-5#TRPBF MS-10 MS C 05-08-1661 Yes
LTC2919HDDB-2.5#PBF 3x2 DFN-10 DDB H 05-08-1722 Yes
LTC2919HDDB-2.5#TRMPBF 3x2 DFN-10 DDB H 05-08-1722 Yes
LTC2919HDDB-2.5#TRPBF 3x2 DFN-10 DDB H 05-08-1722 Yes
LTC2919HDDB-3.3#PBF 3x2 DFN-10 DDB H 05-08-1722 Yes
LTC2919HDDB-3.3#TRMPBF 3x2 DFN-10 DDB H 05-08-1722 Yes
LTC2919HDDB-3.3#TRPBF 3x2 DFN-10 DDB H 05-08-1722 Yes
LTC2919HDDB-5#PBF 3x2 DFN-10 DDB H 05-08-1722 Yes
LTC2919HDDB-5#TRMPBF 3x2 DFN-10 DDB H 05-08-1722 Yes
LTC2919HDDB-5#TRPBF 3x2 DFN-10 DDB H 05-08-1722 Yes
LTC2919HMS-2.5#PBF MS-10 MS H 05-08-1661 Yes
LTC2919HMS-2.5#TRPBF MS-10 MS H 05-08-1661 Yes
LTC2919HMS-3.3#PBF MS-10 MS H 05-08-1661 Yes
LTC2919HMS-3.3#TRPBF MS-10 MS H 05-08-1661 Yes
LTC2919HMS-5#PBF MS-10 MS H 05-08-1661 Yes
LTC2919HMS-5#TRPBF MS-10 MS H 05-08-1661 Yes
LTC2919IDDB-2.5#PBF 3x2 DFN-10 DDB I 05-08-1722 Yes
LTC2919IDDB-2.5#TRMPBF 3x2 DFN-10 DDB I 05-08-1722 Yes
LTC2919IDDB-2.5#TRPBF 3x2 DFN-10 DDB I 05-08-1722 Yes
LTC2919IDDB-3.3#PBF 3x2 DFN-10 DDB I 05-08-1722 Yes
LTC2919IDDB-3.3#TRMPBF 3x2 DFN-10 DDB I 05-08-1722 Yes
LTC2919IDDB-3.3#TRPBF 3x2 DFN-10 DDB I 05-08-1722 Yes
LTC2919IDDB-5#PBF 3x2 DFN-10 DDB I 05-08-1722 Yes
LTC2919IDDB-5#TRMPBF 3x2 DFN-10 DDB I 05-08-1722 Yes
LTC2919IDDB-5#TRPBF 3x2 DFN-10 DDB I 05-08-1722 Yes
LTC2919IMS-2.5#PBF MS-10 MS I 05-08-1661 Yes
LTC2919IMS-2.5#TRPBF MS-10 MS I 05-08-1661 Yes
LTC2919IMS-3.3#PBF MS-10 MS I 05-08-1661 Yes
LTC2919IMS-3.3#TRPBF MS-10 MS I 05-08-1661 Yes
LTC2919IMS-5#PBF MS-10 MS I 05-08-1661 Yes
LTC2919IMS-5#TRPBF MS-10 MS I 05-08-1661 Yes


LTC2919 Package Drawing
LTC2919 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC2919CDDB-2.5#PBF 3x2 DFN-10 C $3.18 Yes
LTC2919CDDB-2.5#TRMPBF 3x2 DFN-10 C $3.18 $1.80 Yes
LTC2919CDDB-2.5#TRPBF 3x2 DFN-10 C $3.18 $1.75 Yes
LTC2919CDDB-3.3#PBF 3x2 DFN-10 C $3.18 Yes
LTC2919CDDB-3.3#TRMPBF 3x2 DFN-10 C $3.18 $1.80 Yes
LTC2919CDDB-3.3#TRPBF 3x2 DFN-10 C $3.18 $1.75 Yes
LTC2919CDDB-5#PBF 3x2 DFN-10 C $3.18 Yes
LTC2919CDDB-5#TRMPBF 3x2 DFN-10 C $3.18 $1.80 Yes
LTC2919CDDB-5#TRPBF 3x2 DFN-10 C $3.18 $1.75 Yes
LTC2919CMS-2.5#PBF MS-10 C $3.13 $1.75 Yes
LTC2919CMS-2.5#TRPBF MS-10 C $3.13 $1.80 Yes
LTC2919CMS-3.3#PBF MS-10 C $3.13 $1.75 Yes
LTC2919CMS-3.3#TRPBF MS-10 C $3.13 $1.80 Yes
LTC2919CMS-5#PBF MS-10 C $3.13 $1.75 Yes
LTC2919CMS-5#TRPBF MS-10 C $3.13 $1.80 Yes
LTC2919HDDB-2.5#PBF 3x2 DFN-10 H $4.00 Yes
LTC2919HDDB-2.5#TRMPBF 3x2 DFN-10 H $4.00 $2.26 Yes
LTC2919HDDB-2.5#TRPBF 3x2 DFN-10 H $4.00 $2.21 Yes
LTC2919HDDB-3.3#PBF 3x2 DFN-10 H $4.00 Yes
LTC2919HDDB-3.3#TRMPBF 3x2 DFN-10 H $4.00 $2.26 Yes
LTC2919HDDB-3.3#TRPBF 3x2 DFN-10 H $4.00 $2.21 Yes
LTC2919HDDB-5#PBF 3x2 DFN-10 H $4.00 Yes
LTC2919HDDB-5#TRMPBF 3x2 DFN-10 H $4.00 $2.26 Yes
LTC2919HDDB-5#TRPBF 3x2 DFN-10 H $4.00 $2.21 Yes
LTC2919HMS-2.5#PBF MS-10 H $3.95 $2.21 Yes
LTC2919HMS-2.5#TRPBF MS-10 H $3.95 $2.26 Yes
LTC2919HMS-3.3#PBF MS-10 H $3.95 $2.21 Yes
LTC2919HMS-3.3#TRPBF MS-10 H $3.95 $2.26 Yes
LTC2919HMS-5#PBF MS-10 H $3.95 $2.21 Yes
LTC2919HMS-5#TRPBF MS-10 H $3.95 $2.26 Yes
LTC2919IDDB-2.5#PBF 3x2 DFN-10 I $3.64 Yes
LTC2919IDDB-2.5#TRMPBF 3x2 DFN-10 I $3.64 $2.06 Yes
LTC2919IDDB-2.5#TRPBF 3x2 DFN-10 I $3.64 $2.01 Yes
LTC2919IDDB-3.3#PBF 3x2 DFN-10 I $3.64 Yes
LTC2919IDDB-3.3#TRMPBF 3x2 DFN-10 I $3.64 $2.06 Yes
LTC2919IDDB-3.3#TRPBF 3x2 DFN-10 I $3.64 $2.01 Yes
LTC2919IDDB-5#PBF 3x2 DFN-10 I $3.64 Yes
LTC2919IDDB-5#TRMPBF 3x2 DFN-10 I $3.64 $2.06 Yes
LTC2919IDDB-5#TRPBF 3x2 DFN-10 I $3.64 $2.01 Yes
LTC2919IMS-2.5#PBF MS-10 I $3.59 $2.01 Yes
LTC2919IMS-2.5#TRPBF MS-10 I $3.59 $2.06 Yes
LTC2919IMS-3.3#PBF MS-10 I $3.59 $2.01 Yes
LTC2919IMS-3.3#TRPBF MS-10 I $3.59 $2.06 Yes
LTC2919IMS-5#PBF MS-10 I $3.59 $2.01 Yes
LTC2919IMS-5#TRPBF MS-10 I $3.59 $2.06 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

Please contact your local sales representative for more information regarding reliability reports and AEC-Q100 data or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC2919HDDB-2.5#PBF 3x2 DFN-10 H $4.00 Yes
LTC2919HDDB-2.5#TRMPBF 3x2 DFN-10 H $4.00 $2.26 Yes
LTC2919HDDB-2.5#TRPBF 3x2 DFN-10 H $4.00 $2.21 Yes
LTC2919HDDB-3.3#PBF 3x2 DFN-10 H $4.00 Yes
LTC2919HDDB-3.3#TRMPBF 3x2 DFN-10 H $4.00 $2.26 Yes
LTC2919HDDB-3.3#TRPBF 3x2 DFN-10 H $4.00 $2.21 Yes
LTC2919HDDB-5#PBF 3x2 DFN-10 H $4.00 Yes
LTC2919HDDB-5#TRMPBF 3x2 DFN-10 H $4.00 $2.26 Yes
LTC2919HDDB-5#TRPBF 3x2 DFN-10 H $4.00 $2.21 Yes
LTC2919HMS-2.5#PBF MS-10 H $3.95 $2.21 Yes
LTC2919HMS-2.5#TRPBF MS-10 H $3.95 $2.26 Yes
LTC2919HMS-3.3#PBF MS-10 H $3.95 $2.21 Yes
LTC2919HMS-3.3#TRPBF MS-10 H $3.95 $2.26 Yes
LTC2919HMS-5#PBF MS-10 H $3.95 $2.21 Yes
LTC2919HMS-5#TRPBF MS-10 H $3.95 $2.26 Yes
LTC2919IDDB-2.5#PBF 3x2 DFN-10 I $3.64 Yes
LTC2919IDDB-2.5#TRMPBF 3x2 DFN-10 I $3.64 $2.06 Yes
LTC2919IDDB-2.5#TRPBF 3x2 DFN-10 I $3.64 $2.01 Yes
LTC2919IDDB-3.3#PBF 3x2 DFN-10 I $3.64 Yes
LTC2919IDDB-3.3#TRMPBF 3x2 DFN-10 I $3.64 $2.06 Yes
LTC2919IDDB-3.3#TRPBF 3x2 DFN-10 I $3.64 $2.01 Yes
LTC2919IDDB-5#PBF 3x2 DFN-10 I $3.64 Yes
LTC2919IDDB-5#TRMPBF 3x2 DFN-10 I $3.64 $2.06 Yes
LTC2919IDDB-5#TRPBF 3x2 DFN-10 I $3.64 $2.01 Yes
LTC2919IMS-2.5#PBF MS-10 I $3.59 $2.01 Yes
LTC2919IMS-2.5#TRPBF MS-10 I $3.59 $2.06 Yes
LTC2919IMS-3.3#PBF MS-10 I $3.59 $2.01 Yes
LTC2919IMS-3.3#TRPBF MS-10 I $3.59 $2.06 Yes
LTC2919IMS-5#PBF MS-10 I $3.59 $2.01 Yes
LTC2919IMS-5#TRPBF MS-10 I $3.59 $2.06 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Applications

  • Desktop and Notebook Computers
  • Network Servers
  • Core, I/O Monitor
  • Automotive

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Models for the following parts are available in LTspice:
LTC2919-25
LTC2919-33
LTC2919-50

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