LTC2934 - Ultra-Low Power Adjustable Supervisor with Power-Fail Output
Features
- 500nA Quiescent Current
- ±1.5% (Max) Accuracy over Temperature
- Operates Down to 1.6V Supply
- Adjustable Reset Threshold
- Adjustable Power-Fail Threshold
- Early Warning Power-Fail Output
- Selectable 15ms or 200ms Reset Timeout
- Manual Reset Input
- Compact 8-Lead, 2mm × 2mm DFN and TSOT-23 (ThinSOT) Packages
AEC-Q100 data available for specific packages
Typical Application
Description
The LTC2934 ultra-low power voltage monitor provides system initialization, power-fail warning and reset generation functions. Low quiescent current (500nA typical) makes the LTC2934 an ideal choice for battery-operated applications.Precision power-fail and reset voltages can be configured independently. Early warning of an impending low volt- age condition is provided at the power-fail output (PFO) when the PFI input falls below 0.4V. Supervisory circuits monitor the ADJ input and pull RST low when ADJ falls below 0.4V. When ADJ is rising from an under-threshold condition, an internal reset timer is started after exceeding the ADJ threshold by 5%. The reset timeout delays the return of the RST output to a high state. A pushbutton switch connected to the MR input is typically used to force a manual reset. Outputs RST and PFO are available with open-drain (LTC2934-1) or active pull-up circuits (LTC2934-2). Operating temperature range is from –40ºC to 85ºC.
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 |
|---|---|---|---|---|---|
| LTC2934CDC-1#PBF | 2x2 DFN-8 | DC8 | C | 05-08-1719 | Yes |
| LTC2934CDC-1#TRMPBF | 2x2 DFN-8 | DC8 | C | 05-08-1719 | Yes |
| LTC2934CDC-1#TRPBF | 2x2 DFN-8 | DC8 | C | 05-08-1719 | Yes |
| LTC2934CDC-2#PBF | 2x2 DFN-8 | DC8 | C | 05-08-1719 | Yes |
| LTC2934CDC-2#TRMPBF | 2x2 DFN-8 | DC8 | C | 05-08-1719 | Yes |
| LTC2934CDC-2#TRPBF | 2x2 DFN-8 | DC8 | C | 05-08-1719 | Yes |
| LTC2934CTS8-1#PBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2934CTS8-1#TRMPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2934CTS8-1#TRPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2934CTS8-2#PBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2934CTS8-2#TRMPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2934CTS8-2#TRPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC2934IDC-1#PBF | 2x2 DFN-8 | DC8 | I | 05-08-1719 | Yes |
| LTC2934IDC-1#TRMPBF | 2x2 DFN-8 | DC8 | I | 05-08-1719 | Yes |
| LTC2934IDC-1#TRPBF | 2x2 DFN-8 | DC8 | I | 05-08-1719 | Yes |
| LTC2934IDC-2#PBF | 2x2 DFN-8 | DC8 | I | 05-08-1719 | Yes |
| LTC2934IDC-2#TRMPBF | 2x2 DFN-8 | DC8 | I | 05-08-1719 | Yes |
| LTC2934IDC-2#TRPBF | 2x2 DFN-8 | DC8 | I | 05-08-1719 | Yes |
| LTC2934ITS8-1#PBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2934ITS8-1#TRMPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2934ITS8-1#TRPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2934ITS8-2#PBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2934ITS8-2#TRMPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC2934ITS8-2#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 | |
|---|---|---|---|---|---|---|
| LTC2934IDC-1#PBF | 2x2 DFN-8 | I | $1.94 | Yes | ||
| LTC2934IDC-1#TRMPBF | 2x2 DFN-8 | I | $1.94 | $1.37 | Yes | |
| LTC2934IDC-1#TRPBF | 2x2 DFN-8 | I | $1.32 | Yes | ||
| LTC2934IDC-2#PBF | 2x2 DFN-8 | I | $1.94 | Yes | ||
| LTC2934IDC-2#TRMPBF | 2x2 DFN-8 | I | $1.94 | $1.37 | Yes | |
| LTC2934IDC-2#TRPBF | 2x2 DFN-8 | I | $1.32 | Yes | ||
| LTC2934ITS8-1#PBF | SOT-23 | I | $1.94 | Yes | ||
| LTC2934ITS8-1#TRMPBF | SOT-23 | I | $1.94 | $1.37 | Yes | |
| LTC2934ITS8-1#TRPBF | SOT-23 | I | $1.32 | Yes | ||
| LTC2934ITS8-2#PBF | SOT-23 | I | $1.94 | Yes | ||
| LTC2934ITS8-2#TRMPBF | SOT-23 | I | $1.94 | $1.37 | Yes | |
| LTC2934ITS8-2#TRPBF | SOT-23 | I | $1.32 | Yes | ||
| Buy Now • Request Samples | ||||||
Applications
- Portable Equipment
- Battery-Powered Equipment
- Security Systems
- Point-of-Sale Devices
- Wireless Systems
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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:
LTC2934-1
LTC2934-2
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.
