Highly-accurate LDO Regulator For Metering


Diodes Incorporated has announced a series of ultra-low dropout regulators for use in various USB power, portable equipment, consumer, instrumentation and metering applications. The AP7380 series operates from a wide 24V input voltage range and offers various fixed output voltage options to address common system requirements.

The devices feature high accuracy and offer an ultra-low quiescent current of 1.8µA to minimise standby power and extends the operating life of battery-powered equipment.

The AP7380’s wide 3.5V to 24V input voltage range enables operation from standard 5V, 9V and 12V system power rails with sufficient overhead to cope with supply transients.

Regulated output voltage variants at 3.0V, 3.3V, 4.15V, 4.4V and 5.0V are offered, supporting common point-of-load requirements.


The device provides excellent 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 150mA, according to the firm.

The device has a dropout voltage of just 250mV at an output voltage of 5V and load current of 50mA.

The AP7380 also integrates a thermal shutdown function to protect equipment from over-temperature conditions.

The AP7380 series is offered in SOT25 and SOT89 packages. For further information, view the full Press release.

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