Product category:
Circuit Protection Devices
News Release from: ON Semiconductor | Subject: NIS5112
Edited by the Electronicstalk Editorial
Team on 11 April 2006
Electronic fuse is cost-effective inrush
limiter
An integrated self-protected resettable electronic fuse uses a high side N-channel FET driven by an internal charge pump.
ON Semiconductor has announced a new member of its Smart HotPlug family with the introduction of the NIS5112 - an integrated self-protected, resettable, electronic fuse that uses a high side N-channel FET, driven by an internal charge pump Designed for use in 12V systems, the NIS5112 provides a cost-effective inrush current limiting solution for hot swap applications such as enterprise class hard drives
This article was originally published on Electronicstalk on 31 Mar 2003 at 8.00am (UK)
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"Utilising the NIS5112, a designer can implement a reliable feature-packed solution to inrush current limiting with only a few low-cost components", said Barry Brinkman, Marketing Manager for ON Semiconductor's Smart HotPlug products.
"Prior to the introduction of this device, designers have had to implement a discrete solution that included up to 11 different components".
Designed to allow the safe insertion and removal of equipment into 12V backplanes, the NIS5112 uses an internal SenseFET that enables active current limiting via inexpensive chip resistors instead of more expensive, low impedance current shunts.
Coupled with an adjustable voltage slew rate, the NIS5112 allows the designer the versatility to easily select the level at which current is limited and the rate the output voltage comes up for multiple applications.
The NIS5112 has an input voltage range of 9 to 18V and also provides overvoltage protection intended to allow operation through transients while protecting the load.
This device also contains circuits to control the turn-on voltage, output current, die temperature, turn-on di/dt and turn-on dV/dt, as well as an enable/timer function.
It offers robust thermal protection circuit in two different thermal limit versions, auto-retry and latch off.
The NIS5112D1R2G (latch) and NIS5112D2R2G (retry) are offered in a lead free, SO-8 package and priced at $1.15 per unit in 2500-unit quantities.
Samples are available now.
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