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Voltage Supervisor Monitors 27 Unique Voltage Thresholds Without External Resistors

Tue, 09/25/2007 - 7:12am

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ec7oic302aLinear Technology introduced the LTC2915, a single voltage supervisor with 27 unique pin-selectable thresholds. A single LTC2915 can easily be configured to meet different monitoring tasks in applications ranging from network servers monitoring 12V to low-voltage portable equipment. The 27 selectable thresholds are specified with an overall accuracy of ±1.5 percent without the need for 0.1 percent external resistors. Offered in low-profile (<1 mm) eight-lead TSOT-23 and 3 mm × 2 mm DFN packages, with guaranteed specifications across the -40°C to +125°C temperature range, the LTC2915 is appropriate for automotive monitoring, handheld devices, optical networks, and general purpose voltage monitoring. The LTC2915 includes two three-state input pins that select one of nine internally programmed thresholds: 12V, 5V, 3.3V, 2.5V, 1.8V, 1.5V, 1.2V, 1.0V, or an adjustable 0.5V. A third three-state input determines if the input threshold is -5 percent, -10 percent or -15 percent below the selected voltage level, allowing for margining. The LTC2916, a variation on the LTC2915, offers the same nine input thresholds, but with a fixed -5 percent tolerance. However, the LTC2916 includes a separate manual reset input for a simple push-button interface.

Linear Technology
800-454-6327, www.linear.com

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