Regulator delivers clean power to sensitive circuits

Diodes’ AP7372 low-dropout (LDO) regulator offers high power supply ripple rejection (PSRR) and low output noise for precision signal chains. It powers ADCs, DACs, VCOs, and PLLs, helping meet stringent ripple and noise targets in test and measurement, communication, industrial automation, and medical applications.

The AP7372 maintains just 8 µV_RMS output noise, independent of fixed output voltage, and delivers PSRR of 90 dB at 10 kHz, 70 dB at 100 kHz, and 52 dB at 1 MHz. Operating from 2.7 V to 20 V, it provides up to 200 mA of output current with a typical 120-mV dropout voltage at 200 mA The wide input range covers common rails (19.5 V, 12 V, 5 V) and single-cell Li-ion sources, while outputs from 1.2 V to 5.0 V suit analog and mixed-signal loads.

Four fixed-output voltages are available—1.8 V, 2.5 V, 3.3 V, and 5.0 V—along with an adjustable output down to 1.2 V. A dedicated resistor-divider pin allows fine adjustments above the nominal fixed-output values. The LDO also provides an enable pin for system-level control, such as power-up sequencing or shutdown when the regulator is unused. Shutdown current is approximately 3 µA, with a quiescent current of 66 µA.

The AP7372 LDO regulator costs $0.30 each in 1000-piece quantities.

AP7372 product page

Diodes

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