Product category:
Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LTC2915
Edited by the Electronicstalk Editorial
Team on 29 October 2007
Single-voltage supervisor offers
versatility
The LTC2915 can be used in applications ranging from network servers monitoring 12V to low-voltage portable equipment.
Linear Technology has released the LTC2915 single-voltage supervisor with 27 pin-selectable thresholds, offering designers a diverse voltage monitor for many different solutions Rather than qualifying and stocking multiple individual supervisors, each with their own voltage threshold, a single LTC2915 can easily be configured to meet different monitoring tasks
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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The LTC2915 can be used 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% without the need for costly 0.1% external resistors.
Offered in low-profile (less than 1mm) eight-lead TSOT-23 and 3 x 2mm DFN packages, with guaranteed specifications across the -40C to +125C temperature range, the LTC2915 is suitable 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: 12, 5, 3.3, 2.5, 1.8, 1.5, 1.2 and 1.0V, or an adjustable 0.5V.
A third three-state input determines if the input threshold is -5%, -10% or -15% 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% tolerance.
The LTC2916 includes a separate manual reset input for a simple push-button interface.
Both the LTC2915 and LTC2916 operate from a single 1.5V to 5.5V supply and consume only 30uA of quiescent current.
To reduce sensitivity to short glitches from a noisy power supply, the LTC2915/LTC2916 input comparator's glitch immunity ensures reliable reset operation without false triggering.
These supervisors include an active-low reset output with a delay time that can be set to 200ms, 400us, or an adjustable period, allowing a processor time to initialise and load memory before it begins operating. Request a free brochure from Linear Technology Corp ...
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