The LTC2919IDDB-2.5 is a triple/dual input monitor intended for a variety of system monitoring applications. Polarity selection and a buffered reference output allow the LTC2919IDDB-2.5 to monitor positive and negative supplies for undervoltage (UV) and overvoltage (OV) conditions.
The two adjustable inputs have a nominal 0.5V threshold, featuring tight 1.5% threshold accuracy over the entire operating temperature range. Glitch filtering ensures outputs operate reliably without false triggering. An accurate threshold at the VCC pin provides a third input supply monitor for a 2.5V, 3.3V or 5V supply.
Two independent output pins indicate the status of each adjustable input. A third common output provides a configurable reset timeout that may be set by an accurate internal 200ms timer, programmed with an external capacitor, or disabled for a fast response. A three-state input pin sets the input polarity of each adjustable input without requiring any external components.
The LTC2919IDDB-2.5 provides a highly versatile, precise, space-conscious, micropower solution for supply monitoring.
Feature
- Two Low Voltage Adjustable Inputs (0.5V)
- Accurate UVLO Provides a Third Monitor Input
- Open-Drain RST, OUT1 and OUT2 Outputs
- Pin Selectable Input Polarity Allows Negative, UV and OV Monitoring
- Guaranteed Threshold Accuracy: ±1.5%
- 6.5V Shunt Regulator for High Voltage Operation
- Low 50µA Quiescent Current
- Buffered 1V Reference for Negative Supply Offset
- Input Glitch Rejection
- Adjustable Reset Timeout Period
- Selectable Internal Timeout Saves Components
- Outputs Guaranteed Low with VCC = 0.5V
- Space Saving 10-Lead 3mm × 2mm DFN and MSOP Packages
- AEC-Q100 Qualified for Automotive Applications
Applications
- Desktop and Notebook Computers
- Network Servers
- Core, I/O Monitor
- Automotive
