Product category: Power Supply ICs and Controllers
News Release from: Maxim Integrated Products | Subject: MAX5091
Edited by the Electronicstalk Editorial Team on 15 December 2006
Automotive linear regulator has
adjustable reset
MAX5091 low-quiescent-current, low-dropout (LDO) linear regulator with a wide operating input-voltage range of +5V to +40V and the capability to withstand up to 40V transients.
Maxim Integrated Products announces the MAX5091 low-quiescent-current, low-dropout (LDO) linear regulator with a wide operating input-voltage range of +5V to +40V and the capability to withstand up to 40V transients Its maximum light-load quiescent current is 100uA, which is approximately 60% lower than the nearest competitor
This article was originally published on Electronicstalk on 27 Aug 2002 at 8.00am (UK)
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The MAX5091 has stable operation with a small, 10 microfarad ceramic cap, unlike the L4949 that cannot achieve stability with these small capacitors.
An user-adjustable reset timeout can be programmed with an external capacitor.
These significant performance capabilities make the MAX5091 a superior drop-in replacement for the L4949.
The integrated active-low microprocessor reset circuit is triggered when the regulator output drops 10% below the nominal voltage, thus providing an early system warning of an impending power failure.
An Enable input then turns the regulator off.
The uncommitted comparator can monitor the input voltage or detect power-fail conditions.
The MAX5091 is available in thermally enhanced, surface-mount, 8-pin TDFN and SO-EP packages.
When operating in the JEDEC 51 standard environment, the TDFN package has a thermal junction-to-case resistance of 6C/W.
The 8-pin SO has a thermal junction-to-case resistance of 8C/W.
The exposed-paddle packages are very effective thermal conductors that simplify thermal design.
The MAX5091 is rated for operation through the automotive temperature range (-40 to +125C).
It is available with fixed 3.3V or 5V outputs, and includes short-circuit protection and thermal shutdown.
Pricing starts at USD1.25 (1000-up, FOB USA).
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