General Description
The Micrel MIC37139 is a 1.5A low-dropout linear voltage regulator that provides a low-voltage, high-current output with a minimum of external components. It offers high precision, ultra-low dropout (500mV overtemperature), and low ground current.

Features
• 1.5A minimum guaranteed output current
• 500mV maximum dropout voltage over temperature
• Stable with ceramic or tantalum capacitor
• Wide input voltage range: VIN:2.25V to 6.0V
• +1.0% initial output tolerance
• Fixed 1.8V output voltage
• Excellent line and load regulation specifications
• Thermal shutdown and current-limit protection
• Reverse-leakage protection
• Low profile SOT-223 package

Applications
• LDO linear regulator for low-voltage digital IC
• PC add-in cards
• High-efficiency linear power supplies
• SMPS post regulator
• Battery charger
• Set-top boxes
• Digital video recorders
• PowerPC® power supplies
• Multimedia and PC processor supplies