Diodes Incorporated Introduces Automotive Qualified LDO Voltage Regulator


Diodes Incorporated has introduced the AP7347DQ low dropout (LDO) voltage regulator, which is highly optimized for demanding noise-sensitive power-related automotive applications. It is available in SOT25 and high-power density sidewall plated W-DFN2020-6 (SWP) packages.

The AP7347DQ is an automotive-compliant high output accuracy LDO is AEC-Q100 Grade 1 qualified, manufactured in IATF 16949 certified facilities and fully supports automotive production part approval processes (PPAPs). These qualities make it well-suited to design in to a range of key in-vehicle functions, including point-of-load (POL) applications in ADAS, automotive wireless communication systems, RF subsystems, and infotainment power sources.

A 75 dB power supply rejection ratio (PSRR), combined with an output noise of just 60 µVrms, gives the AP7347DQ considerable performance advantages. It is available in 12 fixed output voltage variants with a ±1 % voltage-output accuracy, which is maintained across its entire -40 to 125 °C operational temperature range. Its 1.7 to 5.5 V wide input voltage range gives it the versatility to address numerous automotive application requirements, while its 60 µA quiescent current mitigates standby power losses.

The AP7347DQ has an enable pin; a built-in active discharge function ensures that the system starts up in a known state if the device has been disabled. Overtemperature and short-circuit protection are integrated, incorporating a 180 mA foldback current limit should a short circuit occur.

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