150-mA regulator supports wide-input V range with fixed output V

The AP7380 series of ultra-low dropout regulators operate from 24-V input voltage range and offers various fixed output voltage options to address common system requirements. These features, combined with high accuracy and an ultra-low quiescent current, make this device well suited for use in various USB power, portable equipment, consumer, instrumentation, and metering applications.

The dropout regulators offer a 3.5- to 24-V input voltage range that enables operation from standard 5-, 9-, and 12-V system power rails with sufficient overhead to cope with supply transients. Regulated output voltage variants at 3.0, 3.3, 4.15, 4.4, and 5.0 V are offered, supporting common point-of-load requirements. The device provides line/load regulation, maintaining a room temperature output accuracy of 1.0% under all I/O voltage conditions up to a maximum rated load current of 150 mA.

The regulator features a dropout voltage of 250 mV at an output voltage of 5 V and load current of 50 mA, while the device’s quiescent current of 1.8 mA minimizes standby power and extends the operating life of battery-powered equipment. The device also integrates a thermal shutdown function to protect equipment from overtemperature conditions. The AP7380 series is offered in SOT25 and SOT89 packages.