Power Management System Supervisor, Monitor and Control Supervisory Circuits Triple Supply Monitors
Power Management System Supervisor, Monitor and Control Supervisory Circuits Dual Supply Monitors
 Space & Harsh Environment Extended Temperature Plastic (H & MP) Extended Temperature (H & MP) System Monitor

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

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

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

DFN-10, MS-10

LTC2919 Package Drawing
LTC2919 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC2919CDDB-2.5#PBF SOT 8 C $3.18 View
LTC2919CDDB-2.5#TRMPBF DFN 32 C $3.18 $1.80 View
LTC2919CDDB-2.5#TRPBF DFN 32 C $3.18 $1.75 View
LTC2919CDDB-3.3#PBF DFN 6 C $3.18 View
LTC2919CDDB-3.3#TRMPBF DFN 32 C $3.18 $1.80 View
LTC2919CDDB-3.3#TRPBF DFN 32 C $3.18 $1.75 View
LTC2919CDDB-5#PBF DFN 8 C $3.18 View
LTC2919CDDB-5#TRMPBF DFN 10 C $3.18 $1.80 View
LTC2919CDDB-5#TRPBF DFN 10 C $3.18 $1.75 View
LTC2919CMS-2.5#PBF MSOP 10 C $3.13 $1.75 View
LTC2919CMS-2.5#TRPBF MSOP 10 C $3.13 $1.80 View
LTC2919CMS-3.3#PBF MSOP 10 C $3.13 $1.75 View
LTC2919CMS-3.3#TRPBF MSOP 10 C $3.13 $1.80 View
LTC2919CMS-5#PBF MSOP 10 C $3.13 $1.75 View
LTC2919CMS-5#TRPBF MSOP 10 C $3.13 $1.80 View
LTC2919HDDB-2.5#PBF DFN 10 H $4.00 View
LTC2919HDDB-2.5#TRMPBF DFN 10 H $4.00 $2.26 View
LTC2919HDDB-2.5#TRPBF DFN 10 H $4.00 $2.21 View
LTC2919HDDB-3.3#PBF DFN 10 H $4.00 View
LTC2919HDDB-3.3#TRMPBF DFN 10 H $4.00 $2.26 View
LTC2919HDDB-3.3#TRPBF DFN 10 H $4.00 $2.21 View
LTC2919HDDB-5#PBF DFN 10 H $4.00 View
LTC2919HDDB-5#TRMPBF DFN 10 H $4.00 $2.26 View
LTC2919HDDB-5#TRPBF DFN 10 H $4.00 $2.21 View
LTC2919HMS-2.5#PBF MSOP 10 H $3.95 $2.21 View
LTC2919HMS-2.5#TRPBF MSOP 10 H $3.95 $2.26 View
LTC2919HMS-3.3#PBF MSOP 10 H $3.95 $2.21 View
LTC2919HMS-3.3#TRPBF MSOP 10 H $3.95 $2.26 View
LTC2919HMS-5#PBF MSOP 10 H $3.95 $2.21 View
LTC2919HMS-5#TRPBF MSOP 10 H $3.95 $2.26 View
LTC2919IDDB-2.5#PBF DFN 10 I $3.64 View
LTC2919IDDB-2.5#TRMPBF DFN 10 I $3.64 $2.06 View
LTC2919IDDB-2.5#TRPBF DFN 10 I $3.64 $2.01 View
LTC2919IDDB-3.3#PBF DFN 10 I $3.64 View
LTC2919IDDB-3.3#TRMPBF DFN 10 I $3.64 $2.06 View
LTC2919IDDB-3.3#TRPBF DFN 10 I $3.64 $2.01 View
LTC2919IDDB-5#PBF DFN 10 I $3.64 View
LTC2919IDDB-5#TRMPBF DFN 10 I $3.64 $2.06 View
LTC2919IDDB-5#TRPBF DFN 10 I $3.64 $2.01 View
LTC2919IMS-2.5#PBF MSOP 10 I $3.59 $2.01 View
LTC2919IMS-2.5#TRPBF MSOP 10 I $3.59 $2.06 View
LTC2919IMS-3.3#PBF MSOP 10 I $3.59 $2.01 View
LTC2919IMS-3.3#TRPBF MSOP 10 I $3.59 $2.06 View
LTC2919IMS-5#PBF MSOP 10 I $3.59 $2.01 View
LTC2919IMS-5#TRPBF MSOP 10 I $3.59 $2.06 View
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* 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

Applications

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

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