MIC2937A-3.3BU 750mA Low-Dropout Voltage Regulator diode rectifier circuit synchronous rectifier
bridge rectifier circuit
,signal schottky diode
MIC2937A-3.3BU 750mA Low-Dropout Voltage Regulator diode rectifier circuit synchronous rectifier
Features
• High output voltage accuracy
• Guaranteed 750mA output
• Low quiescent current
• Low dropout voltage
• Extremely tight load and line regulation
• Very low temperature coefficient
• Current and thermal limiting
• Input can withstand –20V reverse battery and +60V positive transients
• Error flag warns of output dropout
• Logic-controlled electronic shutdown
• Output programmable from 1.24V to 26V(MIC29372)
• Available in TO-220, TO-263, TO-220-5, and TO-263-5 packages
General Description
The MIC2937A family are “bulletproof” efficient voltage regulators with very low dropout voltage (typically 40mV at light loads and 300mV at 500mA), and very low quiescent current (160µA typical). The quiescent current of the MIC2937A increases only slightly in dropout, thus prolonging battery life. Key MIC2937A features include protection against reversed battery, fold-back current limiting, and automotive “load dump” protection (60V positive transient).
The MIC2937 is available in several configurations. The MIC2937A-xx devices are three pin fixed voltage regulators with 3.3V, 5V, and 12V outputs available. The MIC29371 is a fixed regulator offering logic compatible ON/OFF switching input and an error flag output. This flag may also be used as a power-on reset signal. A logic-compatible shutdown input is provided on the adjustable MIC29372, which enables the regulator to be switched on and off.
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