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Analog Devices Inc. LT3073 Dropout Ultra-Fast Linear Regulators are low voltage, ultra-low noise, and ultra-fast transient response linear regulators that supply up to 3A with a typical dropout voltage of 45mV. The device features a 4.7µF reference bypass capacitor that decreases output voltage noise to 1.2µVRMS. The LT3073 is excellent for powering high-performance FPGAs, data converters, RF, and noise-sensitive signal chain applications.
The ADI LT3073 dropout ultra-fast linear regulators provide a digitally selectable output voltage in 50mV increments from 0.5V to 1.2V, 100mV increments from 1.2V to 1.8V, and discrete levels at 2V, 2.5V, 3V, 3.3V, and 4.2V. The unity-gain operation of the device delivers virtually constant output noise, PSRR, bandwidth, and load regulation independent of the programmed output voltage. Additionally, the LT3073 includes a unique tracking feature (VIOC) to control the upstream switching regulator to maintain a constant voltage across the LT3073 and minimize power dissipation.
Built-in protection contains UVLO, internal current limit, and thermal shutdown with hysteresis.
The LT3073 is housed in a compact 22-lead (3mm x 4mm) LQFN package (Laminate package with QFN footprint).
