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)
AEC-Q100 data available for specific packages
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
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LTC2911CDDB-1#TRMPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2911CDDB-1#TRPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2911CDDB-2#TRMPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2911CDDB-2#TRPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2911CDDB-3#TRMPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2911CDDB-3#TRPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2911CDDB-4#TRMPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2911CDDB-4#TRPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2911CDDB-5#TRMPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2911CDDB-5#TRPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2911CTS8-1#TRMPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2911CTS8-1#TRPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2911CTS8-2#TRMPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2911CTS8-2#TRPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2911CTS8-3#TRMPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2911CTS8-3#TRPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2911CTS8-4#TRMPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2911CTS8-4#TRPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2911CTS8-5#TRMPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2911CTS8-5#TRPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2911HDDB-1#TRMPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC2911HDDB-1#TRPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC2911HDDB-2#TRMPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC2911HDDB-2#TRPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC2911HDDB-3#TRMPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC2911HDDB-3#TRPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC2911HDDB-4#TRMPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC2911HDDB-4#TRPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC2911HDDB-5#TRMPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC2911HDDB-5#TRPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC2911HTS8-1#TRMPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC2911HTS8-1#TRPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC2911HTS8-2#TRMPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC2911HTS8-2#TRPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC2911HTS8-3#TRMPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC2911HTS8-3#TRPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC2911HTS8-4#PBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC2911HTS8-4#TRMPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC2911HTS8-4#TRPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC2911HTS8-5#TRMPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC2911HTS8-5#TRPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC2911IDDB-1#TRMPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2911IDDB-1#TRPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2911IDDB-2#TRMPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2911IDDB-2#TRPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2911IDDB-3#TRMPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2911IDDB-3#TRPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2911IDDB-4#TRMPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2911IDDB-4#TRPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2911IDDB-5#TRMPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2911IDDB-5#TRPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2911ITS8-1#TRMPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2911ITS8-1#TRPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2911ITS8-2#TRMPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2911ITS8-2#TRPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2911ITS8-3#TRMPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2911ITS8-3#TRPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2911ITS8-4#TRMPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2911ITS8-4#TRPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2911ITS8-5#TRMPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2911ITS8-5#TRPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- 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
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
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation pagesales office or authorized distributor.
Applications
- Network Servers
- Desktop and Notebook Computers
- Automotive and Industrial Electronics
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