LTC2934
LTC2934
PRODUCTIONUltra-Low Power Adjustable Supervisor with Power-Fail Output
- Part Models
- 16
- 1ku List Price
- Starting From $1.79
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Overview
- 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
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 voltage 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.
Applications
- Portable Equipment
- Battery-Powered Equipment
- Security Systems
- Point-of-Sale Devices
- Wireless Systems
Documentation
Data Sheet 1
Technical Articles 1
Product Selector Card 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC2934CDC-1#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC2934CDC-1#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC2934CDC-2#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC2934CDC-2#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC2934CTS8-1#TRMPBF | 8-Lead SOT-23 | ||
| LTC2934CTS8-1#TRPBF | 8-Lead SOT-23 | ||
| LTC2934CTS8-2#TRMPBF | 8-Lead SOT-23 | ||
| LTC2934CTS8-2#TRPBF | 8-Lead SOT-23 | ||
| LTC2934IDC-1#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC2934IDC-1#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC2934IDC-2#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC2934IDC-2#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC2934ITS8-1#TRMPBF | 8-Lead SOT-23 | ||
| LTC2934ITS8-1#TRPBF | 8-Lead SOT-23 | ||
| LTC2934ITS8-2#TRMPBF | 8-Lead SOT-23 | ||
| LTC2934ITS8-2#TRPBF | 8-Lead SOT-23 |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Circuit Monitors 1 | ||
| LTC2960 | RECOMMENDED FOR NEW DESIGNS | 36V Nano-Current Two-Input Voltage Monitor |
| Overvoltage & Overcurrent Protectors 1 | ||
| LTC4365 | RECOMMENDED FOR NEW DESIGNS | Overvoltage, Undervoltage and Reverse Supply Protection Controller |
| Supervisory Circuits & Reset ICs 1 | ||
| LTC2935 | PRODUCTION | Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC2934-1
- LTC2934-2
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.