Product category:
Analogue and Mixed Signal ICs
News Release from: Linear Technology Corp | Subject: LTC2909
Edited by the Electronicstalk Editorial
Team on 27 January 2006
Supervisor watches for under- and
overvoltage
A new dual low voltage adjustable input supervisor can handle a variety of system monitoring applications.
Linear Technology has introduced the LTC2909, a dual low voltage adjustable input supervisor intended for a variety of system monitoring applications A single select pin chooses one of three possible polarity combinations for the adjustable inputs
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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The LTC2909 can monitor two supplies - positive, negative, or both - for undervoltage, overvoltage or one of each.
It may also monitor a single supply (positive or negative) for undervoltage and overvoltage simultaneously.
The adjustable trip thresholds are set with an external resistive divider network, giving users complete control over the trip point and tailoring the LTC2909 to the needs of specific designs.
The low voltage threshold of 0.5V comes with an accuracy of +/-1.5%, ensuring reliable reset operation without false triggering.
A precision undervoltage lockout allows VCC to be used as an accurate third fixed 10% undervoltage supply monitor.
The common reset output delay can be configured to use a preset 200ms timeout, adjusted by an external capacitor or disabled.
In addition to providing a highly versatile, precise solution for supply monitoring, the low quiescent current of 50uA and the tiny DFN package make the LTC2909 an ideal choice in low-voltage space-limited applications.
The onboard featured 6.5V shunt regulator, however, permits operation from a high voltage supply.
Thus, the LTC2909 fits perfectly in small and portable appliances as well as in network servers and automotive applications.
The IC is offered in 8-pin SOT-23 and 3 x 2mm DFN packages and is specified over the commercial and industrial temperature ranges.
Pricing begins at $1.55 each for 1000-piece quantities. Request a free brochure from Linear Technology Corp ...
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