Features and Benefits
- Simultaneously Monitors Six Supplies
- 16 User Selectable Combinations of 5V, 3.3V, 3V, 2.5V, 1.8V, 1.5V and ± Adjustable Voltage Thresholds
- Guaranteed Threshold Accuracy: ±1.5%
- Adjustable Reset and Watchdog Timeout
- Low Supply Current: 52μA
- Comparator/Monitor Output for Each Supply
- Power Supply Glitch Immunity
- Guaranteed RST for VCC ≥ 1V
- High Temperature Operation to 125°C
- 20-Lead TSSOP Package
The LTC2931 is a conﬁgurable supply monitor for systems with up to six supply voltages. One of 16 preset or adjustable voltage monitor combinations can be selected using an external resistive divider connected to the mode select pin. The preset voltage thresholds are accurate to ±1.5% over temperature. The LTC2931 also features adjustable inputs with a 0.5V nominal threshold. All six open-drain voltage comparator outputs are connected to separate pins for individual supply monitoring.
The reset and watchdog timeout periods are adjustable using external capacitors. Tight voltage threshold accuracy and glitch immunity ensure reliable reset operation without false triggering. The RST output is guaranteed to be in the correct state for VCC down to 1V. Each status output has a weak internal pull-up and may be externally pulled up to a user deﬁned voltage.
The 52μA supply current makes the LTC2931 ideal for power conscious systems and it may be conﬁgured to monitor fewer than six inputs.
- Desktop and Notebook Computers
- Multivoltage Systems
- Telecom Equipment
- Portable Battery-Powered Equipment
- Network Servers
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
R413 Reliability Data3/26/2018
6-Input Supervisors Offer Accurate Monitoring and 125°C Operation3/1/2008 LT Journal
LTC2931 Companion Parts
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 Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|LTC2931CF#PBF||Material Declaration||Reliability Data||20-Lead TSSOP|
|LTC2931CF#TRPBF||Material Declaration||Reliability Data||20-Lead TSSOP|
|LTC2931HF#PBF||Material Declaration||Reliability Data||20-Lead TSSOP|
|LTC2931HF#TRPBF||Material Declaration||Reliability Data||20-Lead TSSOP|
|LTC2931IF#PBF||Material Declaration||Reliability Data||20-Lead TSSOP|
|LTC2931IF#TRPBF||Material Declaration||Reliability Data||20-Lead TSSOP|
|Wafer Fabrication Data||R413 Reliability Data|
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Buy Now Pricing
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