LTC2904

PRODUCTION

LTC2904

Precision Dual Supply Monitor with Pin-Selectable Thresholds

PRODUCTION

Part Details

5V, 3.3V Dual Supply Monitor with 5% Tolerance slide

Table 1. Voltage Threshold Programming slide

5V, 3.3V Dual Supply Monitor with 5% Tolerance

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Part Models 8

1ku List Price Starting From $1.85

Features

Monitors Two Inputs Simultaneously
Nine Threshold Combinations
Three Supply Tolerances (5%, 7.5%, 10%)
Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage Over Temperature
Internal V_CC Auto Select
Power Supply Glitch Immunity
200ms Reset Time Delay (LTC2904 Only)
Adjustable Reset Time Delay (LTC2905 Only)
Open Drain RST Output
Guaranteed RST for V1 ≥ 1V or V2 ≥ 1V
Low Profile (1mm) SOT-23 (ThinSOT^™) and Plastic (3mm × 2mm) DFN Packages

Additional Details

The LTC2904/LTC2905 are dual supply monitors intended for systems with two supply voltages. The dual supply monitors have a common reset output with delay (200ms for the LTC2904 and adjustable using an external capacitor for the LTC2905). This product provides a precise, space-conscious and micropower solution for supply monitoring.

The LTC2904/LTC2905 feature a tight 1.5% threshold accuracy over the whole operating temperature range, and glitch immunity to ensure reliable reset operation without false triggering. The open drain RST output is guaranteed to be in the correct state for inputs down to 1V.

The LTC2904/LTC2905 also feature three programming input pins, which program the threshold and tolerance level without requiring any external components. These three programming pins provide a total of 27 different voltage level and tolerance combinations, eliminating the need to have different parts for development and implementation of different systems with different voltage levels requiring monitoring function.

Applications

Desktop and Notebook Computers
Handheld Devices
Network Servers
Core, I/O Monitor

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Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 8

1ku List Price Starting From $1.85

Documentation

Technical Documents 2

LTC2904/LTC2905: Precision Dual Supply Monitor with Pin-Selectable Thresholds Data Sheet 10/04/2017

R413 Reliability Data 03/26/2018

Reference Materials 1

Voltage Monitors & Supervisors Quick Guide 04/04/2017

Design Resources 8

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC2904CDDB#TRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC2904CDDB#TRPBF	8-Lead DFN (3mm x 2mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC2904CTS8#TRMPBF	8-Lead SOT-23	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC2904CTS8#TRPBF	8-Lead SOT-23	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC2904IDDB#TRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC2904IDDB#TRPBF	8-Lead DFN (3mm x 2mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC2904ITS8#TRMPBF	8-Lead SOT-23	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC2904ITS8#TRPBF	8-Lead SOT-23	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTC2904CDDB#TRMPBF
Pin/Package Drawing
8-Lead DFN (3mm x 2mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC2904CDDB#TRPBF
Pin/Package Drawing
8-Lead DFN (3mm x 2mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC2904CTS8#TRMPBF
Pin/Package Drawing
8-Lead SOT-23
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC2904CTS8#TRPBF
Pin/Package Drawing
8-Lead SOT-23
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC2904IDDB#TRMPBF
Pin/Package Drawing
8-Lead DFN (3mm x 2mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC2904IDDB#TRPBF
Pin/Package Drawing
8-Lead DFN (3mm x 2mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC2904ITS8#TRMPBF
Pin/Package Drawing
8-Lead SOT-23
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC2904ITS8#TRPBF
Pin/Package Drawing
8-Lead SOT-23
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

Software & Part Ecosystem

Tools & Simulations

LTspice 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.