LTC2908 - Precision Six Input Supply Monitor
Features
- Ultralow Voltage Reset: VCC = 0.5V Guaranteed*
- Monitors Six Inputs Simultaneously:
5V, 3.3V, 2.5V, 1.8V, ADJ1, ADJ2 (LTC2908-A1)
3.3V, 2.5V, 1.8V, 1.5V, ADJ1, ADJ2 (LTC2908-B1)
2.5V, ADJ1, ADJ2, ADJ3, ADJ4, ADJ5 (LTC2908-C1)
- Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage Overtemperature
- Internal VCC Auto Select
- Power Supply Glitch Immunity
- 200ms Reset Time Delay
- Active Low Open-Drain RST Output
- Low Profile (1mm) 8-Lead SOT-23 (ThinSOT™) and Plastic (3mm × 2mm) DFN Packages
AEC-Q100 data available for specific packages
Typical Application
Description
The LTC2908 is a six input supply monitor for systems requiring a precise and compact monitoring solution for multiple supply voltages. The inputs can be shorted together for monitoring systems with fewer than six supply voltages, and the open drain RST output of two or more LTC2908s can be wired-OR together for monitoring systems with more than six supply voltages. The common reset output remains low until all six inputs have been in compliance for 200ms.
The LTC2908 features a tight 1.5% threshold accuracy over the entire operating temperature range and glitch immunity to ensure reliable reset operation without false triggering. The open-drain RST output state is guaranteed to be in the correct state as long as V1 and/or V2 is 0.5V or greater.
The LTC2908 also features adjustable inputs with a nominal threshold level at 0.5V. This product provides a precise, space-conscious, micropower and general purpose solution for any kind of system requiring supply monitors.
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 |
|---|---|---|---|---|---|
| LTC2908CDDB-A1#PBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2908CDDB-A1#TRMPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2908CDDB-A1#TRPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2908CDDB-B1#PBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2908CDDB-B1#TRMPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2908CDDB-B1#TRPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2908CDDB-C1#PBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2908CDDB-C1#TRMPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2908CDDB-C1#TRPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2908CTS8-A1#PBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC2908CTS8-A1#TRMPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2908CTS8-A1#TRPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2908CTS8-B1#PBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2908CTS8-B1#TRMPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2908CTS8-B1#TRPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2908CTS8-C1#PBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2908CTS8-C1#TRMPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2908CTS8-C1#TRPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2908IDDB-A1#PBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2908IDDB-A1#TRMPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2908IDDB-A1#TRPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2908IDDB-B1#PBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2908IDDB-B1#TRMPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2908IDDB-B1#TRPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2908IDDB-C1#PBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2908IDDB-C1#TRMPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2908IDDB-C1#TRPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC2908ITS8-A1#PBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2908ITS8-A1#TRMPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2908ITS8-A1#TRPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2908ITS8-B1#PBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2908ITS8-B1#TRMPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2908ITS8-B1#TRPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2908ITS8-C1#PBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2908ITS8-C1#TRMPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2908ITS8-C1#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 page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC2908IDDB-A1#PBF | 3x2 DFN-8 | I | $3.83 | Yes | ||
| LTC2908IDDB-A1#TRMPBF | 3x2 DFN-8 | I | $3.83 | $2.93 | Yes | |
| LTC2908IDDB-A1#TRPBF | 3x2 DFN-8 | I | $3.83 | $2.91 | Yes | |
| LTC2908IDDB-B1#PBF | 3x2 DFN-8 | I | $3.83 | Yes | ||
| LTC2908IDDB-B1#TRMPBF | 3x2 DFN-8 | I | $3.83 | $2.93 | Yes | |
| LTC2908IDDB-B1#TRPBF | 3x2 DFN-8 | I | $3.83 | $2.91 | Yes | |
| LTC2908IDDB-C1#PBF | 3x2 DFN-8 | I | $3.83 | Yes | ||
| LTC2908IDDB-C1#TRMPBF | 3x2 DFN-8 | I | $3.83 | $2.93 | Yes | |
| LTC2908IDDB-C1#TRPBF | 3x2 DFN-8 | I | $3.83 | $2.91 | Yes | |
| LTC2908ITS8-A1#PBF | SOT-23 | I | $3.83 | Yes | ||
| LTC2908ITS8-A1#TRMPBF | SOT-23 | I | $3.83 | $2.93 | Yes | |
| LTC2908ITS8-A1#TRPBF | SOT-23 | I | $3.83 | $2.91 | Yes | |
| LTC2908ITS8-B1#PBF | SOT-23 | I | $3.75 | Yes | ||
| LTC2908ITS8-B1#TRMPBF | SOT-23 | I | $3.75 | $2.93 | Yes | |
| LTC2908ITS8-B1#TRPBF | SOT-23 | I | $2.91 | Yes | ||
| LTC2908ITS8-C1#PBF | SOT-23 | I | $3.83 | Yes | ||
| LTC2908ITS8-C1#TRMPBF | SOT-23 | I | $3.83 | $2.93 | Yes | |
| LTC2908ITS8-C1#TRPBF | SOT-23 | I | $3.83 | $2.91 | Yes | |
| Buy Now • Request Samples | ||||||
Applications
- Network Servers
- Wireless Base Stations
- Optical Networking Systems
- Multivoltage Systems
- Desktop and Notebook Computers
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
Models for the following parts are available in LTspice:
LTC2908-A1
LTC2908-B1
LTC2908-C1
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
