Diodes Incorporated (Nasdaq: DIOD) has introduced the AP7372, a high-performance low-dropout (LDO) regulator designed to reduce noise and ripple in sensitive electronic applications, targeting sectors such as test and measurement, communications, industrial automation, and medical equipment.
The AP7372 delivers up to 90dB power supply ripple rejection (PSRR) across a wide frequency range and achieves ultra-low output noise of 8μVrms, allowing designers to meet stringent performance targets in precision components including data converters, voltage-controlled oscillators, and phase-locked loops.
Capable of supplying up to 200mA output current with a dropout voltage of 120mV, the device is offered in fixed output versions of 1.8V, 2.5V, 3.3V, and 5.0V, as well as an adjustable configuration down to 1.2V. A resistor-divider pin enables fine voltage tuning, while the input range of 2.7V to 20V supports common power sources such as 12V and 5V buses or single-cell Li-ion batteries.
The regulator incorporates an adjustable soft-start feature, configurable via an external capacitor, to control inrush currents and ensure stable power-up. Integrated protections include current limiting, short-circuit prevention, and thermal shutdown. Stability is maintained with a compact 2.2μF ceramic output capacitor, reducing bill of materials and enabling high power density in a 1.2mm x 1.0mm U-WLB1012-6 package.
An enable pin supports system-level power sequencing and energy savings, with shutdown current at around 3μA and quiescent current of 66μA to minimize system power consumption.
Priced at $0.30 in 1,000-piece quantities, the AP7372 is aimed at designers seeking compact, efficient, and low-noise power regulation for noise-sensitive systems.
