Power Management
System Supervisor, Monitor and Control
Supervisory Circuits
Triple Supply Monitors
Space & Harsh Environment
Extended Temperature Plastic (H & MP)
Extended Temperature (H & MP) System Monitor
LTC2911 - Precision Triple Supply Monitor with Power-Fail Comparator
Features
- Ultralow Voltage Reset: VCC = 0.5V Guaranteed
- Monitors Three Inputs Simultaneously:
3.3V, 5V, ADJ (LTC2911-1)
3.3V, 2.5V, ADJ (LTC2911-2) - ±1.5% Threshold Accuracy
- Power-Fail Monitor
- RST State Can Be Held for Margining
- Low Supply Current: 30μA Typical
- Input Glitch Immunity
- Adjustable Reset Timeout Period
- Selectable Internal Timeout Saves Components
- Space Saving 8-Lead TSOT-23 and 3mm × 2mm DFN Packages
3.3V, 1.8V, ADJ (LTC2911-3)
3.3V, 1.2V, ADJ (LTC2911-4)
3.3V, ADJ, ADJ (LTC2911-5)
Typical Application
Description
The LTC2911 is a low power, high accuracy triple supply monitor with a power-fail comparator. Reset timeout may be selected with an external capacitor or set to an internally generated 200ms.
The V1 pin monitors a 3.3V supply. The V2 pin monitors a 5V, 2.5V, 1.8V, 1.2V or adjustable supply. A third adjustable input has a nominal 0.5V threshold allowing a resistive divider to configure its threshold. All three comparators feature a tight 1.5% threshold accuracy over the entire operating temperature range while a glitch filter ensures reliable reset operation.
A spare comparator can be configured to provide early warning of a low voltage condition. It causes the PFO output to pull low when the voltage of the PFI input falls below 0.5V, allowing the power-fail threshold to be configured with a resistive divider. A latch feature on the TMR pin allows the RST output to be latched to prevent system resets, simplifying margin testing.
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
SOT-23, DFN-8
Order Info
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- 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 | Pins | Temp | Price (1-99) | Price (1k)* | RoHS Data |
|---|---|---|---|---|---|---|
| LTC2911CDDB-1#TRMPBF | DFN | 8 | C | $2.17 | $1.57 | View |
| LTC2911CDDB-1#TRPBF | DFN | 8 | C | $2.17 | $1.52 | View |
| LTC2911CDDB-2#TRMPBF | DFN | 8 | C | $2.17 | $1.57 | View |
| LTC2911CDDB-2#TRPBF | DFN | 8 | C | $2.17 | $1.52 | View |
| LTC2911CDDB-3#TRMPBF | DFN | 8 | C | $2.17 | $1.57 | View |
| LTC2911CDDB-3#TRPBF | DFN | 8 | C | $2.17 | $1.52 | View |
| LTC2911CDDB-4#TRMPBF | DFN | 8 | C | $2.17 | $1.57 | View |
| LTC2911CDDB-4#TRPBF | DFN | 8 | C | $2.17 | $1.52 | View |
| LTC2911CDDB-5#TRMPBF | DFN | 8 | C | $2.17 | $1.57 | View |
| LTC2911CDDB-5#TRPBF | DFN | 8 | C | $2.17 | $1.52 | View |
| LTC2911CTS8-1#TRMPBF | SOT | 8 | C | $2.17 | $1.57 | View |
| LTC2911CTS8-1#TRPBF | SOT | 8 | C | $2.17 | $1.52 | View |
| LTC2911CTS8-2#TRMPBF | SOT | 8 | C | $2.17 | $1.57 | View |
| LTC2911CTS8-2#TRPBF | SOT | 8 | C | $2.17 | $1.52 | View |
| LTC2911CTS8-3#TRMPBF | SOT | 6 | C | $2.17 | $1.57 | View |
| LTC2911CTS8-3#TRPBF | SOT | 8 | C | $2.17 | $1.52 | View |
| LTC2911CTS8-4#TRMPBF | SOT | 8 | C | $2.17 | $1.57 | View |
| LTC2911CTS8-4#TRPBF | SOT | 8 | C | $2.17 | $1.52 | View |
| LTC2911CTS8-5#TRMPBF | SOT | 8 | C | $2.17 | $1.57 | View |
| LTC2911CTS8-5#TRPBF | SOT | 8 | C | $2.17 | $1.52 | View |
| LTC2911HDDB-1#TRMPBF | DFN | 8 | H | $2.87 | $2.06 | View |
| LTC2911HDDB-1#TRPBF | DFN | 8 | H | $2.87 | $2.01 | View |
| LTC2911HDDB-2#TRMPBF | DFN | 8 | H | $2.87 | $2.06 | View |
| LTC2911HDDB-2#TRPBF | DFN | 8 | H | $2.87 | $2.01 | View |
| LTC2911HDDB-3#TRMPBF | DFN | 8 | H | $2.87 | $2.06 | View |
| LTC2911HDDB-3#TRPBF | DFN | 8 | H | $2.87 | $2.01 | View |
| LTC2911HDDB-4#TRMPBF | DFN | 8 | H | $2.87 | $2.06 | View |
| LTC2911HDDB-4#TRPBF | DFN | 8 | H | $2.87 | $2.01 | View |
| LTC2911HDDB-5#TRMPBF | DFN | 8 | H | $2.87 | $2.06 | View |
| LTC2911HDDB-5#TRPBF | DFN | 8 | H | $2.87 | $2.01 | View |
| LTC2911HTS8-1#TRMPBF | SOT | 8 | H | $2.87 | $2.06 | View |
| LTC2911HTS8-1#TRPBF | SOT | 8 | H | $2.87 | $2.01 | View |
| LTC2911HTS8-2#TRMPBF | SOT | 8 | H | $2.87 | $2.06 | View |
| LTC2911HTS8-2#TRPBF | SOT | 8 | H | $2.87 | $2.01 | View |
| LTC2911HTS8-3#TRMPBF | SOT | 8 | H | $2.87 | $2.06 | View |
| LTC2911HTS8-3#TRPBF | SOT | 8 | H | $2.87 | $2.01 | View |
| LTC2911HTS8-4#PBF | SOT | 8 | H | $2.87 | View | |
| LTC2911HTS8-4#TRMPBF | SOT | 8 | H | $2.87 | $2.06 | View |
| LTC2911HTS8-4#TRPBF | SOT | 8 | H | $2.87 | $2.01 | View |
| LTC2911HTS8-5#TRMPBF | SOT | 8 | H | $2.87 | $2.06 | View |
| LTC2911HTS8-5#TRPBF | SOT | 8 | H | $2.87 | $2.01 | View |
| LTC2911IDDB-1#TRMPBF | DFN | 8 | I | $2.50 | $1.80 | View |
| LTC2911IDDB-1#TRPBF | DFN | 8 | I | $2.50 | $1.75 | View |
| LTC2911IDDB-2#TRMPBF | DFN | 8 | I | $2.50 | $1.80 | View |
| LTC2911IDDB-2#TRPBF | DFN | 8 | I | $2.50 | $1.75 | View |
| LTC2911IDDB-3#TRMPBF | DFN | 8 | I | $2.50 | $1.80 | View |
| LTC2911IDDB-3#TRPBF | DFN | 8 | I | $2.50 | $1.75 | View |
| LTC2911IDDB-4#TRMPBF | DFN | 8 | I | $2.50 | $1.80 | View |
| LTC2911IDDB-4#TRPBF | DFN | 8 | I | $2.50 | $1.75 | View |
| LTC2911IDDB-5#TRMPBF | DFN | 8 | I | $2.50 | $1.80 | View |
| LTC2911IDDB-5#TRPBF | DFN | 8 | I | $2.50 | $1.75 | View |
| LTC2911ITS8-1#TRMPBF | SOT | 8 | I | $2.50 | $1.80 | View |
| LTC2911ITS8-1#TRPBF | SOT | 8 | I | $2.50 | $1.75 | View |
| LTC2911ITS8-2#TRMPBF | SOT | 8 | I | $2.50 | $1.80 | View |
| LTC2911ITS8-2#TRPBF | SOT | 8 | I | $2.50 | $1.75 | View |
| LTC2911ITS8-3#TRMPBF | SOT | 8 | I | $2.50 | $1.80 | View |
| LTC2911ITS8-3#TRPBF | SOT | 8 | I | $2.50 | $1.75 | View |
| LTC2911ITS8-4#TRMPBF | SOT | 8 | I | $2.50 | $1.80 | View |
| LTC2911ITS8-4#TRPBF | SOT | 8 | I | $2.50 | $1.75 | View |
| LTC2911ITS8-5#TRMPBF | SOT | 8 | I | $2.50 | $1.80 | View |
| LTC2911ITS8-5#TRPBF | SOT | 8 | I | $2.50 | $1.75 | View |
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Demo Boards
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Applications
- Network Servers
- Desktop and Notebook Computers
- Automotive and Industrial Electronics
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