MIC5239 Datasheet | Micrel Semiconductor

Low Quiescent Current 500m A µCap LDO Regulator General Description Features 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 500m A output, the MIC5239 has a dropout voltage of only 350m V. It can provide high output current for applications such as USB. - Ultra-low quiescent current (IQ = 23µA @IO = 100µA) - Continuous 500m A output current - Wide input range: 2.3V to 30V - Low dropout voltage: 350m V @500m A - ±1.0% initial output accuracy - Stable with ceramic or tantalum output capacitor 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 patible enable input and an undervoltage error flag indicator. Other Features of the MIC5239 include thermal shutdown, current limit, overvoltage shutdown, reverse-leakage protection, and reversebattery protection. - Logic patible 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 Available in the thermally enhanced SOIC-8, MSOP-8 and SOT-223, the MIC5239 es in fixed 1.5V, 1.8V, 2.5V, 3.0V, 3.3V and 5.0V, and adjustable voltages. For other output voltages, contact Micrel. All support documentation can be found on Micrel’s web site at: .micrel.. Applications - USB power supply - Keep-alive supply in notebook and portable personal puters - Logic supply from high voltage batteries - Automotive electronics - Battery-powered systems Typical Application VIN...