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MIC2951

Micrel Semiconductor
Part Number MIC2951
Manufacturer Micrel Semiconductor
Description 150mA Low-Dropout Voltage Regulator
Published Oct 28, 2014
Detailed Description MIC2950*/2951 150mA Low-Dropout Voltage Regulator General Description Features The MIC2950 and MIC2951 are “bulletpro...
Datasheet PDF File MIC2951 PDF File

MIC2951
MIC2951

Overview
MIC2950*/2951 150mA Low-Dropout Voltage Regulator General Description Features The MIC2950 and MIC2951 are “bulletproof” micropower • High accuracy 3.
3, 4.
85, or 5V, guaranteed 150mA voltage regulators with very low dropout voltage (typically output 40mV at light loads and 250mV at 100mA), and very low • Extremely low quiescent current quiescent current.
Like their predecessors, the LP2950 and • Low-dropout voltage LP2951, the quiescent current of the MIC2950/MIC2951 • Extremely tight load and line regulation increases only slightly in dropout, thus pro-longing battery • Very low temperature coefficient life.
The MIC2950/MIC2951 are pin for pin compatible with • Use as regulator or reference the LP2950/LP2951, but offer lower dropout, lower • Needs only 1.
5µF for stability quiescent current, reverse battery, and automotive load dump protection.
• Current and thermal limiting • Unregulated DC input can withstand –20V reverse The key additional features and protection offered include battery and +60V positive transients higher output current (150mA), positive transient protection for up to 60V (load dump), and the ability to survive an MIC2951 Version Only unregulated input voltage transient of –20V below ground • Error flag warns of output dropout (reverse battery).
• Logic-controlled electronic shutdown The plastic DIP and SOIC versions offer additional system • Output programmable from 1.
24 to 29V functions such as programmable output voltage and logic controlled shutdown.
The 3-pin TO-92 MIC2950 is pincompatible with the older 5V regulators.
Applications These system functions also include an error flag output • Automotive electronics that warns of a low output voltage, which is often due to • Voltage reference failing batteries on the input.
This may also be used as a • Avionics power-on reset.
A logic-compatible shutdown input is also available which enables the regulator to be switched on and • Cellular telephones off.
This part may also be pin-strapped for a...


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