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LT3074AV: 5.5V, 3A Low Dropout Linear Regulator, LQFN-22

Overview:

The LT3074AV is a low voltage, ultra-low noise and ultra-fast transient response linear regulator with a PMBus serial interface. The device delivers up to 3A of current with a typical dropout of 45mV. a 4.7μF reference bypass capacitor reduces the output voltage noise to 1.2μVRMS. a wide bandwidth and high PSRR allow the use of small ceramic capacitors, which saves volumetric capacitance and cost.

Basic Information:

Model No.: LT3074AV

Package: LQFN-22

Type: Low Dropout Linear Regulator

Product Features:

Ultra-low RMS noise: 1.2μVRMS (10 kHz to 100 kHz)

Ultra-low point noise: 3.5nV/√Hz at 10 kHz

Ultra-low 1/f noise: 7μVP-P (0.1 Hz to 10 Hz)

High PSRR at high frequencies: 52dB at 1MHz

Ultra-fast transient response

Dropout voltage: 45mV typical

100μA reference current: ±0.5% initial accuracy

Precision current monitor: ±3% accuracy at 3A

Stable with ceramic output capacitors (10μF minimum)

Parallelise multiple devices for higher current

VIOC pin controls upstream switching converter

22-pin (3 mm × 4 mm) LQFN package

LT3074AV - Applications:

RF power supplies: PLLs, VCOs, mixers, LNAs, PAs 

High-speed/high-precision data converters

Low-noise instrumentation

Switching Power Post Regulators

FPGA and DSP power supplies

Medical Applications

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