General Description
●The MIC5239 is a low quiescent current, µCap 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 µCap 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, overvolt age shutdown, reverse-leakage protection, and reverse battery protection.
●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
●Applications
●• USB power supply
●• Keep-alive supply in notebook and portable personal computers
●• Logic supply from high voltage batteries
●• Automotive electronics
●• Battery-powered systems