DocumentationDatasheet
Design Note
Reliability Data
Product Selector Card
Press Release
- Single Supply Undervoltage and Overvoltage Monitor Provides Precise and Space Saving Solution
- Single/Dual/Quad/Octal Precision Voltage Monitors Guaranteed to +125°C
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Features
- Monitors Single Voltage
- Adjustable UV and OV Trip Values
- Guaranteed Threshold Accuracy: ±1.5%
- Power Supply Glitch Immunity
- Adjustable Reset Timeout with Timeout Disable
- 29μA Quiescent Current
- Open-Drain OV and UV Outputs
- Guaranteed OV and UV for VCC ≥ 1V
- Available in 8-Lead ThinSOTTM and (3mm × 2mm) DFN Packages
Typical Application
Description
The LTC®2912 voltage monitor is designed to detect power supply undervoltage and overvoltage events. The VL and VH monitor inputs include filtering to reject brief glitches, thereby ensuring reliable reset operation without false or noisy triggering. An adjustable timer defines the duration of the overvoltage and undervoltage reset outputs which function independently. While the LTC2912 operates directly from 2.3V to 6V supplies, an internal VCC shunt regulator coupled with low supply current demand allows operation from higher voltages such as 12V, 24V or 48V.
Three output configurations are available: the LTC2912‑1 has a latch control for the OV output; the LTC2912-2 has an OV and UV output disable feature for margining applications; the LTC2912-3 is identical to the LTC2912-1 but with a noninverting, OV output.
The LTC2912 provides a precise, versatile, space-conscious micropower solution for voltage monitoring.
3x2 DFN-8,SOT-23
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC2912CDDB-1#PBF | DFN | 8 | C | $2.07 | |
| LTC2912CDDB-1#TRMPBF | DFN | 8 | C | $2.07 | $1.50 |
| LTC2912CDDB-1#TRPBF | DFN | 8 | C | $2.07 | $1.45 |
| LTC2912CDDB-2#PBF | DFN | 8 | C | $2.07 | |
| LTC2912CDDB-2#TRMPBF | DFN | 8 | C | $2.07 | $1.50 |
| LTC2912CDDB-2#TRPBF | DFN | 8 | C | $2.07 | $1.45 |
| LTC2912CDDB-3#PBF | DFN | 8 | C | $2.07 | |
| LTC2912CDDB-3#TRMPBF | DFN | 8 | C | $2.07 | $1.50 |
| LTC2912CDDB-3#TRPBF | DFN | 8 | C | $2.07 | $1.45 |
| LTC2912CTS8-1#PBF | SOT | 8 | C | $2.07 | |
| LTC2912CTS8-1#TRMPBF | SOT | 8 | C | $2.07 | $1.50 |
| LTC2912CTS8-1#TRPBF | SOT | 8 | C | $2.07 | $1.45 |
| LTC2912CTS8-2#PBF | SOT | 8 | C | $2.07 | |
| LTC2912CTS8-2#TRMPBF | SOT | 8 | C | $2.07 | $1.50 |
| LTC2912CTS8-2#TRPBF | SOT | 8 | C | $2.07 | $1.45 |
| LTC2912CTS8-3#PBF | SOT | 8 | C | $2.07 | |
| LTC2912CTS8-3#TRMPBF | SOT | 8 | C | $2.07 | $1.50 |
| LTC2912CTS8-3#TRPBF | SOT | 8 | C | $2.07 | $1.45 |
| LTC2912HDDB-1#PBF | DFN | 8 | H | $3.04 | |
| LTC2912HDDB-1#TRMPBF | DFN | 8 | H | $3.04 | $2.02 |
| LTC2912HDDB-1#TRPBF | DFN | 8 | H | $3.04 | $1.97 |
| LTC2912HDDB-2#PBF | DFN | 8 | H | $3.04 | |
| LTC2912HDDB-2#TRMPBF | DFN | 8 | H | $3.04 | $2.02 |
| LTC2912HDDB-2#TRPBF | DFN | 8 | H | $3.04 | $1.97 |
| LTC2912HDDB-3#PBF | DFN | 8 | H | $3.04 | |
| LTC2912HDDB-3#TRMPBF | DFN | 8 | H | $3.04 | $2.02 |
| LTC2912HDDB-3#TRPBF | DFN | 8 | H | $3.04 | $1.97 |
| LTC2912HTS8-1#PBF | SOT | 8 | H | $3.04 | |
| LTC2912HTS8-1#TRMPBF | SOT | 8 | H | $3.04 | $2.02 |
| LTC2912HTS8-1#TRPBF | SOT | 8 | H | $3.04 | $1.97 |
| LTC2912HTS8-2#PBF | SOT | 8 | H | $3.04 | |
| LTC2912HTS8-2#TRMPBF | SOT | 8 | H | $3.04 | $2.02 |
| LTC2912HTS8-2#TRPBF | SOT | 8 | H | $3.04 | $1.97 |
| LTC2912HTS8-3#PBF | SOT | 8 | H | $3.04 | |
| LTC2912HTS8-3#TRMPBF | SOT | 8 | H | $3.04 | $2.02 |
| LTC2912HTS8-3#TRPBF | SOT | 8 | H | $3.04 | $1.97 |
| LTC2912IDDB-1#PBF | DFN | 8 | I | $2.48 | |
| LTC2912IDDB-1#TRMPBF | DFN | 8 | I | $2.48 | $1.79 |
| LTC2912IDDB-1#TRPBF | DFN | 8 | I | $2.48 | $1.74 |
| LTC2912IDDB-2#PBF | DFN | 8 | I | $2.48 | |
| LTC2912IDDB-2#TRMPBF | DFN | 8 | I | $2.48 | $1.79 |
| LTC2912IDDB-2#TRPBF | DFN | 8 | I | $2.48 | $1.74 |
| LTC2912IDDB-3#PBF | DFN | 8 | I | $2.48 | |
| LTC2912IDDB-3#TRMPBF | DFN | 8 | I | $2.48 | $1.79 |
| LTC2912IDDB-3#TRPBF | DFN | 8 | I | $2.48 | $1.74 |
| LTC2912ITS8-1#PBF | SOT | 8 | I | $2.48 | |
| LTC2912ITS8-1#TRMPBF | SOT | 8 | I | $2.48 | $1.79 |
| LTC2912ITS8-1#TRPBF | SOT | 8 | I | $2.48 | $1.74 |
| LTC2912ITS8-2#PBF | SOT | 8 | I | $2.48 | |
| LTC2912ITS8-2#TRMPBF | SOT | 8 | I | $2.48 | $1.79 |
| LTC2912ITS8-2#TRPBF | SOT | 8 | I | $2.48 | $1.74 |
| LTC2912ITS8-3#PBF | SOT | 8 | I | $2.48 | |
| LTC2912ITS8-3#TRMPBF | SOT | 8 | I | $2.48 | $1.79 |
| LTC2912ITS8-3#TRPBF | SOT | 8 | I | $2.48 | $1.74 |
| LTC2912ITS8-1#TRM | SOT | 8 | I | $4.96 | $3.58 |
| LTC2912ITS8-1#TR | SOT | 8 | I | $4.96 | $3.48 |
| LTC2912CTS8-1 | SOT | 8 | C | $4.14 | |
| LTC2912ITS8-1 | SOT | 8 | I | $4.96 |
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.