MIC5158YM

The MIC5158YM from Microchip Technology is a Super LDO™ Regulator Controller designed for high-current, low-dropout linear voltage regulation. This IC utilizes an external N-channel power MOSFET as the linear pass element, allowing for dropout voltages as low as the MOSFET's Rds(on) multiplied by the output current.

The device operates from a wide input voltage range of 3V to 36V and has a typical operating current of 4.5mA, with a standby current of less than 1µA. It offers an output voltage tolerance of 1% initially and 2% over temperature. The MIC5158YM is available in a 14-SOIC package and operates within an ambient temperature range of -40°C to +85°C.

Key features include an optional current limit with a typical threshold of 35mV, an enable pin for activating or shutting down the regulator, and an internal charge pump voltage tripler. The regulator output provides a constant-current limit when the controller detects 35mV across an optional external sense resistor. An active-low open-collector flag indicates a low voltage condition.

This regulator controller is suitable for applications requiring high-current ultralow dropout voltage regulation, constant high-current sources, and low parts count power supplies. Its surface mountable 14-SOIC package facilitates integration into compact designs.