MIC5239-3.3YS

The MIC5239 is a low quiescent current, µCap low-dropout regulator. With a maximum operating input voltage of 30V and a quiescent current of 23 µA, it is ideal for supplying keep-alive power in systems with high voltage batteries. Capable of 500 mA output, the MIC5239 has a dropout voltage of only 350 mV. It can provide high output current for applications such as USB. As a µCap LDO, the MIC5239 is stable with either a ceramic or a tantalum output capacitor. It only requires a 3.3 µF 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 = 23 µA @ IO = 100 µA)
• Continuous 500 mA Output Current
• Wide Input Range: 2.3V to 30V
• Low Dropout Voltage: 350 mV @ 500 mA
• ±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