Compared to the output current and package size, ST 's LDLN025 low-dropout (LDO) regulator has the best squelch performance in its class, with less than 6.5μVrms at 250mA full load and a package size of 0.63mmx0.63mm.
To ensure the precision and sensitivity of precision chips such as ADCs, VCOs or sensors, the LDLN025 is designed to provide a smooth, stable supply voltage. With its small package, the new regulator allows for new and better features in space-constrained products such as smartphones, smart watches, fitness monitors, medical sensors, and wireless IoT hardware.
LDLN025 combines low operating noise with excellent supply voltage rejection ratio. The PSRR is 80dB at 120Hz. It can work normally without an output filter. Only two small ceramic capacitors can ensure stable output, simplifying product design and saving device cost. And board space. The no-load quiescent current is only 12μA, and the quiescent current is 0.2μA in the external enable pin-controlled shutdown mode. Ultra-low static power minimizes overall power consumption and extends battery life in portable devices.
The LDLN025 has an input voltage range of 1.5V to 5.5V and a typical voltage drop of 120mV. The output voltage can be fixed from 1.2V to 5.0V.
In addition to the 0.63mm x 0.63mm 4-bump flip chip package, the LDLN025 is also available in a 1mm x 1mm 4-pin QFN package. The 2.95mmx1.6mm SOT23-5L package is under development and will soon expand the output voltage range.
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