Power
Quad Under-and-Over Voltage Monitor for Positive & Negative Supplies Offers Versatility & Precision
Linear Technology has introduced the LTC2914, a precision quad input voltage monitor with four separate undervoltage (UV) and overvoltage (OV) inputs, designed for systems with multiple supplies. The IC offers a versatile and precise solution for voltage monitoring by giving the user the flexibility to configure specific UV and OV trip thresholds, while also guaranteeing ±1.5% threshold accuracy of the monitored voltages over temperature. A buffered reference output and a three-state input polarity-select pin allow for monitoring of up to two separate negative voltages without the need of any external components, greatly simplifying both design and layout. All monitors share common undervoltage and overvoltage open-drain outputs that can be wired-OR'd together to indicate a single fault. The LTC2914-1 has latching capabilities for the overvoltage output, and the LTC2914-2 has an output disable feature to facilitate margining.
The The LTC2914 is offered in 16-pin SSOP and 16-pin 5mm x 3 mm DFN packages and is specified over the commercial and industrial temperature ranges. The LTC2913 is offered in 10-pin MSOP and 3mm x 3mm 10-pin DFN packages. The LTC2914 is priced at $3.75 each and the LTC2913 begins at $2.30 each in 1,000-piece quantities.
Summary of Features of the LTC2914:
· Monitors Four Voltages Simultaneously
· Adjustable UV & OV Trip Values
· Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage over Temperature
· Input Glitch Rejection
· Monitors up to Two Negative Voltages
· Buffered 1V Reference Output
· 70uA Quiescent Current
· Available in 16-pin SSOP and 16-pin 5mm x 3mm DFN Packages