MIC5239-3.3YS-TR

The MIC5239 is a low quiescent current, uCap low-dropout regulator. With a maximum operating input voltage of 30V and a quiescent current of 23μA, it is ideal for supplying keep-alive power in systems with high voltage batteries. Capable of 500mA output, the MIC5239 has a dropout voltage of only 350mV. It can provide high output current for applications such as USB. As a uCap LDO, the MIC5239 is stable with either a ceramic or a tantalum output capacitor. It only requires a 3.3μF output capacitor for stability. The MIC5239 includes a logic compatible enable input and an undervoltage error flag indicator. Other features of the MIC5239 include thermal shutdown, current limit, overvoltage shutdown, reverse-leakage protection, and reverse-battery protection. Available in the thermally enhanced SOIC-8, MSOP-8 and SOT-223, the MIC5239 comes in fixed 1.5V, 1.8V, 2.5V, 3.0V, 3.3V and 5.0V, and adjustable voltages.

Applications

• USB power supply
• Keep-alive supply in notebook and portable personal computers
• Logic supply from high voltage batteries
• Automotive electronics
• Battery-powered systems

Key features

• Ultra-low quiescent current (IQ = 23μA @ IO = 100μA)
• Continuous 500mA output current
• Wide input range: 2.3V to 30V
• Low dropout voltage: 350mV @ 500mA
• ±1.0% initial output accuracy
• Stable with ceramic or tantalum output capacitor
• Logic compatible enable input
• Low output voltage error flag indicator
• Overcurrent protection
• Thermal shutdown
• Reverse-leakage protection
• Reverse-battery protection
• High-power SOIC-8, MSOP-8 and SOT-223 packages