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MIC39150

Micrel Semiconductor
Part Number MIC39150
Manufacturer Micrel Semiconductor
Description 1.5A Low-Voltage Low-Dropout Regulator
Published Mar 26, 2005
Detailed Description MIC39150/39151 Micrel MIC39150/39151 1.5A Low-Voltage Low-Dropout Regulator General Description The MIC39150 and MIC3...
Datasheet PDF File MIC39150 PDF File

MIC39150
MIC39150

Overview
MIC39150/39151 Micrel MIC39150/39151 1.
5A Low-Voltage Low-Dropout Regulator General Description The MIC39150 and MIC39151 are 1.
5A low-dropout linear voltage regulators that provide a low voltage, high current output with a minimum of external components.
Utilizing Micrel’s proprietary Super βeta PNP™ pass element, the MIC39150/1 offers extremely low dropout (typically 375mV at 1.
5A) and low ground current (typically 17mA at 1.
5A).
The MIC39150/1 is ideal for PC add-in cards that need to convert from 3.
3V to 2.
5V or 2.
5V to 1.
8V.
A guaranteed maximum dropout voltage of 500mV over all operating conditions allows the MIC39150/1 to provide 2.
5V from a supply as low as 3V or 1.
8V from a supply as low as 2.
3V.
The MIC39150/1 also has fast transient response for heavy switching applications.
This device requires only 10µF of output capacitance to maintain stability and achieve fast transient response The MIC39150/1 is fully protected with overcurrent limiting, thermal shutdown, reversed-battery protection, reversedlead insertion, and reverse-leakage protection.
The MIC39151 offers a TTL-logic compatible enable pin and an error flag that indicates undervoltage and over current conditions.
Offered in fixed voltages of 2.
5V and 1.
8V, the MIC39150/1 comes in the TO-220 and TO-263 packages and is an ideal upgrade to older, NPN-based linear voltage regulators.
Features • 1.
5A minimum guaranteed output current • 500mV maximum dropout voltage over temperature Ideal for 3.
0V to 2.
5V conversion Ideal for 2.
5 to 1.
8V conversion • 1% initial accuracy • Low ground current • Current limiting and Thermal shutdown • Reversed-battery and reversed lead insertion protection • Reversed-leakage protection • Fast transient response • TO-263 and TO-220 packaging • TTL/CMOS compatible enable pin (MIC39151 only) • Error flag output (MIC39151 only) Applications • • • • • • Low-voltage digital ICs LDO linear regulator for PC add-in cards High-efficiency linear power supplies SMPS post regulato...


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