¡El MIC5156, MIC5157, and MIC5158 Super Low-Dropout (LDO) Regulator Controllers are single IC solutions for highcurrent low-dropout linear voltage regulation. Super LDO™ Regulators have the advantages of an external N-channel power MOSFET as the linear pass element. ¡El MIC5156/7/8 family features a dropout voltage as low as the RDS(ON) of the external power MOSFET multiplied by the output current. ¡El output current can be as high as the largest MOSFETs can provide. ¡El MIC5156/7/8 family operates from 3V to 36V. The MIC5156 requires an external gate drive supply to provide the higher voltage needed to drive the gate of the external MOSFET. ¡El MIC5157 and MIC5158 each have an internal charge pump tripler to produce the gate drive voltage. ¡El tripler is capable of providing enough voltage to drive a logic-level MOSFET to 3.3V output from a 3.5V supply and is clamped to 17.5V above the supply voltage. ¡El tripler requires three external capacitors. ¡El regulator output is constant-current limited when the controller detects 35mV across an optional external sense resistor. An active-low open-collector flag indicates a low voltage of 8% or more below nominal output. A shutdown (low) signal to the TTL-compatible enable control reduces controller supply current to less than 1µA while forcing the output voltage to ground. ¡El MIC5156-3.3 and MIC5156-5.0 controllers have internally fixed output voltages. ¡El MIC5156 [adjustable] output is configured using two external resistors. ¡El MIC5157 is a fixed output controller which is externally configured to select either 3.3V, 5.0V, or 12V. ¡El MIC5158 can be configured as a fixed 5V controller or programmed to any voltage from 1.3V to 36V using two external resistors. ¡El MIC5156 is available in an 8-pin DIP or SOIC. The MIC5157 and MIC5158 are available in a 14-pin DIP or SOIC which operate from –40°C to +85°C.