STMicroelectronics LDLN025 low-dropout (LDO) voltage regulators

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STMicroelectronics’ LDLN025 low-dropout (LDO) voltage regulators deliver good noise performance in relation to output and footprint, generating less than 6.5 µVrms noise at 250 mA full load with an outline of just 0.63 x 0.63 mm.

To ensure high sensitivity, the product is designed to supply ultrasmooth and stable voltage to precision ICs like ADCs, VCOs or sensors. With the advantage of its small footprint, it enables space-constrained products like smartphones, smart watches, fitness monitors, medical sensors and wireless IoT devices to support better functions.

The device combines low-noise operations with a high PSRR (power supply rejection ratio) of 80 dB at 120 Hz. It can operate with no output filter and is stable with only two small ceramic capacitors that help simplify design and save bill-of-materials costs and board real estate. Quiescent current of just 12 µA at no load and 0.2 µA in shutdown mode controlled by an external Enable pin minimise overall power consumption and help prolong battery life in portable applications.

The unit operates with an input voltage from 1.5 to 5.5 V, with typical dropout of 120 mV. A selection of fixed output voltages from 1.2 to 5 V is available.

For more information: www.st.com/ldln025-pr.