LTC2931
LTC2931
PRODUCTIONConfigurable Six Supply Monitor with Adjustable Reset and Watchdog Timers
- Part Models
- 6
- 1ku List Price
- Starting From $4.27
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Overview
- 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.
Applications
- Desktop and Notebook Computers
- Multivoltage Systems
- Telecom Equipment
- Portable Battery-Powered Equipment
- Network Servers
- Automotive
Documentation
Data Sheet 1
Technical Articles 1
Product Selector Card 1
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 |
|---|---|---|---|
| LTC2931CF#PBF | 20-Lead TSSOP | ||
| LTC2931CF#TRPBF | 20-Lead TSSOP | ||
| LTC2931HF#PBF | 20-Lead TSSOP | ||
| LTC2931HF#TRPBF | 20-Lead TSSOP | ||
| LTC2931IF#PBF | 20-Lead TSSOP | ||
| LTC2931IF#TRPBF | 20-Lead TSSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 9, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only) |
||
| LTC2931CF#PBF | PRODUCTION | |
| LTC2931CF#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL |
||
| LTC2931CF#PBF | PRODUCTION | |
| LTC2931CF#TRPBF | PRODUCTION | |
| LTC2931HF#PBF | PRODUCTION | |
| LTC2931HF#TRPBF | PRODUCTION | |
| LTC2931IF#PBF | PRODUCTION | |
| LTC2931IF#TRPBF | PRODUCTION | |
|
Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only) |
||
| LTC2931HF#PBF | PRODUCTION | |
| LTC2931HF#TRPBF | PRODUCTION | |
| LTC2931IF#PBF | PRODUCTION | |
| LTC2931IF#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.