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36-V nano current voltage monitor focuses on multicell applications

April 10, 2012 | Paul Buckley | 222904417
Linear Technology Corporation has introduced a 2.5 V to 36 V, two input voltage monitor that draws 850 nA of quiescent current, offering extended battery life in battery-powered applications.

The LTC2960 provides two adjustable monitoring inputs that can be configured to provide undervoltage (UV) or overvoltage (OV) monitoring, low battery indication, undervoltage lockout (UVLO), power supply sequencing signals or a high voltage window comparator for microprocessor, DC/DC switcher or LDO based systems. The LTC2960 fulfills a broad range of battery-powered, portable application requirements with its wide voltage operation and low current consumption in a 2 mm x 2 mm DFN or ThinSOT package.

This unique feature set differentiates the LTC2960 for low power voltage monitor applications and makes it ideal for multiple Li+ coin cells, AAs, AAAs and other compact battery-powered or “green” applications. The ±1.5% accurate reset, undervoltage and overvoltage monitoring thresholds are easy to configure with external resistors. When used as a supervisor, a manual reset input is available for optional use of a pushbutton switch to force a system reset.

The LTC2960-1 and LTC2960-3 provide two independent UV monitors, while the LTC2960-2 and LTC2960-4 provide one UV and one OV monitor. Ordering options include selectable 15 ms or 200 ms reset timeout period, output logic supply pin, or choice of active pull-up or 36 V open-drain output for maximum application flexibility.

Availability and Pricing

The LTC2960 is available today in commercial, industrial and automotive versions, with operating temperature ranges from 0 to 70°C, -40°C to 85°C, and -40 to 125°C, respectively. All devices can be ordered in either 8-pin 2 mm x 2 mm DFN or 8-lead ThinSOT packages, both of which are RoHS compliant. Pricing starts at $1.71 each in 1,000 piece quantities.

More information about the LTC2960 voltage monitor at
www.linear.com/product/LTC2960










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