The MIC2937A series is a "bulletproof" high efficiency regulator with very low step-down (typically 40mV at light loads and 300mV at 500mA) and very low static current (typically 160µA). It is a stationary regulator that provides logically-compatible ON/OFF switch input and error flag output. This flag can also be used as a power-on reset signal. A logically-compatible off input is provided on the adjustable MIC29372 to enable the regulator to switch on and off
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
• The 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
Schematic Diagram
Applications
• Battery Powered Equipment
• Cellular Telephones
• Laptop, Notebook, and Palmtop Computers
• PCMCIA VCC and VPP Regulation/Switching
• Bar Code Scanners
• Automotive Electronics
• SMPS Post-Regulator/ DC to DC Modules
• High Efficiency Linear Power Supplies
The MIC2937A offers only a slight increase in static current, resulting in extended battery life, with key features including protection against battery reversal, retraction current limiting, and vehicle "load dump" protection (60V positive transient). The MIC2937 is available in a variety of configurations. The MIC2937A-xx device is a three-pin fixed voltage regulator that provides 3.3V, 5V, and 12V outputs.
Typical Applications
MIC2937A-5.0 Fixed +5V Regulator
MIC29372 Adjustable Regulator
MIC29372 Wide Input Voltage Range Current Limiter
MIC29372 5.0V or 3.3V Selectable Regulator with Shutdown.
