STMicroelectronics has released a low-dropout voltage regulator that is useful for improving the precision of measurements and A/D conversion of physical signals for medical equipment.
The new LDLN025 generates less than 6.5µVrms noise at 250mA full load. It has a high Power Supply Rejection Ratio (PSRR) of 80dB at 120Hz. It also operates using an input voltage of 1.5V to 5.5V with a normal dropout of 120mV. It doesn’t need an output filter to operate and is stable with two small ceramic capacitors.
It has a quiescent current of 12µA at no load and 0.2µA in shutdown mode that is controlled by an external enable pin. The LDLN025 also reduces power consumption and extends the battery life in portable applications.
Sensors that measure temperature, small current and voltages in healthcare applications will benefit from the LDLN025. The LDLN05 provides a clear supply which increases the precision of the conversions. It is designed to supply ultra-smooth and stable voltage to precision ICs like ADCs, VCOs and sensors.
With its tiny outline of just 0.63 mm x 0.63 mm, it is able to be used in space-constrained applications, like smartphones, smart watches, fitness monitors, medical sensors and wireless IoT devices to enhance functions.
The LDLN025 is also available in a 1mm x 1mm 4-lead QFN in addition to its 0.63mm x 0.63 mm Flip-Chip 4-bump package. It is priced at $0.15 for 1000 pieces.
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