Diodes Incorporated has introduced the AP7347DQ low dropout (LDO) voltage regulator, which is highly optimised for demanding noise-sensitive, power-related automotive applications. This 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 (PPAP). These qualities make it well suited to design into 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°C to 125°C operational temperature range. Its 1,7 V 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. Over-temperature and short-circuit protection are integrated, incorporating a 180 mA foldback current limit should a short circuit occur.
The AP7347DQ is available in SOT25 and high-power density sidewall plated W‑DFN2020‑6 (SWP) packages.
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