LTC2900 - Programmable Quad Supply Monitor with Adjustable Reset Timer
Features
- Simultaneously Monitors Four Supplies
- 16 User Selectable Combinations of 5V, 3.3V, 3V, 2.5V, 1.8V, 1.5V and/or ±Adjustable Voltage Thresholds
- Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage Over Temperature
- Low Supply Current: 43µA Typ
- Adjustable Reset Time
- Small MSOP and 3mm x 3mm DFN Packages
- Manual Reset Pin
- Open-Drain RST Output (LTC2900-1)
- Push-Pull RST Output (LTC2900-2)
- Power Supply Glitch Immunity
- Guaranteed RST for VCC >/= 1V
AEC-Q100 data available for specific packages
Typical Application
Description
The LTC™2900 is a programmable supply monitor for systems with up to four supply voltages. One of 16 preset or adjustable voltage monitor combinations can be selected using an external resistor divider connected to the program pin. The preset voltage thresholds are accurate to �1.5% over temperature.
The reset delay time is adjustable using an external capacitor and the manual reset input may be used with a momentary switch to issue reset pulses with programmed duration. 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. The LTC2900-1 features an open-drain RST output, while the LTC2900-2 has a push-pull RST output.
The 43µA supply current makes the LTC2900 ideal for power conscious systems and it may be configured to monitor less than four inputs. The parts are available in the 10-lead MSOP and the 10-lead 3mm x 3mm DFN packages.
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 |
|---|---|---|---|---|---|
| LTC2900-1CDD#PBF | 3x3 DFN-10 | DD | C | 05-08-1699 | Yes |
| LTC2900-1CDD#TRPBF | 3x3 DFN-10 | DD | C | 05-08-1699 | Yes |
| LTC2900-1CMS#PBF | MS-10 | MS | C | 05-08-1661 | Yes |
| LTC2900-1CMS#TRPBF | MS-10 | MS | C | 05-08-1661 | Yes |
| LTC2900-1IDD#PBF | 3x3 DFN-10 | DD | I | 05-08-1699 | Yes |
| LTC2900-1IDD#TRPBF | 3x3 DFN-10 | DD | I | 05-08-1699 | Yes |
| LTC2900-1IMS#PBF | MS-10 | MS | I | 05-08-1661 | Yes |
| LTC2900-1IMS#TRPBF | MS-10 | MS | I | 05-08-1661 | Yes |
| LTC2900-2CDD#PBF | 3x3 DFN-10 | DD | C | 05-08-1699 | Yes |
| LTC2900-2CDD#TRPBF | 3x3 DFN-10 | DD | C | 05-08-1699 | Yes |
| LTC2900-2CMS#PBF | MS-10 | MS | C | 05-08-1661 | Yes |
| LTC2900-2CMS#TRPBF | MS-10 | MS | C | 05-08-1661 | Yes |
| LTC2900-2IDD#PBF | 3x3 DFN-10 | DD | I | 05-08-1699 | Yes |
| LTC2900-2IDD#TRPBF | 3x3 DFN-10 | DD | I | 05-08-1699 | Yes |
| LTC2900-2IMS#PBF | MS-10 | MS | I | 05-08-1661 | Yes |
| LTC2900-2IMS#TRPBF | MS-10 | MS | I | 05-08-1661 | 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
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC2900-1CDD#PBF | 3x3 DFN-10 | C | $2.55 | $2.05 | Yes | |
| LTC2900-1CDD#TRPBF | 3x3 DFN-10 | C | $2.15 | Yes | ||
| LTC2900-1CMS#PBF | MS-10 | C | $2.30 | $1.85 | Yes | |
| LTC2900-1CMS#TRPBF | MS-10 | C | $1.91 | Yes | ||
| LTC2900-1IDD#PBF | 3x3 DFN-10 | I | $2.90 | $2.40 | Yes | |
| LTC2900-1IDD#TRPBF | 3x3 DFN-10 | I | $2.50 | Yes | ||
| LTC2900-1IMS#PBF | MS-10 | I | $2.70 | $2.15 | Yes | |
| LTC2900-1IMS#TRPBF | MS-10 | I | $2.21 | Yes | ||
| LTC2900-2CDD#PBF | 3x3 DFN-10 | C | $2.55 | $2.05 | Yes | |
| LTC2900-2CDD#TRPBF | 3x3 DFN-10 | C | $2.15 | Yes | ||
| LTC2900-2CMS#PBF | MS-10 | C | $2.30 | $1.85 | Yes | |
| LTC2900-2CMS#TRPBF | MS-10 | C | $1.91 | Yes | ||
| LTC2900-2IDD#PBF | 3x3 DFN-10 | I | $2.90 | $2.40 | Yes | |
| LTC2900-2IDD#TRPBF | 3x3 DFN-10 | I | $2.50 | Yes | ||
| LTC2900-2IMS#PBF | MS-10 | I | $2.70 | $2.15 | Yes | |
| LTC2900-2IMS#TRPBF | MS-10 | I | $2.21 | Yes | ||
| Buy Now • Request Samples | ||||||
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 | |
|---|---|---|---|---|---|---|
| LTC2900-1IDD#PBF | 3x3 DFN-10 | I | $2.90 | $2.40 | Yes | |
| LTC2900-1IDD#TRPBF | 3x3 DFN-10 | I | $2.50 | Yes | ||
| LTC2900-1IMS#PBF | MS-10 | I | $2.70 | $2.15 | Yes | |
| LTC2900-1IMS#TRPBF | MS-10 | I | $2.21 | Yes | ||
| LTC2900-2IDD#PBF | 3x3 DFN-10 | I | $2.90 | $2.40 | Yes | |
| LTC2900-2IDD#TRPBF | 3x3 DFN-10 | I | $2.50 | Yes | ||
| LTC2900-2IMS#PBF | MS-10 | I | $2.70 | $2.15 | Yes | |
| LTC2900-2IMS#TRPBF | MS-10 | I | $2.21 | Yes | ||
| Buy Now • Request Samples | ||||||
Applications
- Desktop and Notebook Computers
- Multivoltage Systems
- Telecom Equipment
- Portable Battery-Powered Equipment
- Network Servers
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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:
LTC2900-1
LTC2900-2
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.
