Analog Devices LT3077
The LT3077 is ideal for powering high-performance FPGAs, data converters, RF, and noise-sensitive signal chain applications. The output voltage is digitally selectable 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 LT3077’s unity-gain operation provides virtually constant output noise, PSRR, and bandwidth independent of the programmed output voltage.| Part No. | LT3077 |
|---|---|
| Datasheet | LT3077 Download |
| Manufacturer |  Analog Devices |
| Description | 5.5V 3A Ultra-Low Noise High PSRR Dropout Ultra-Fast Linear Regulator |
| Buy | Stock & Price |
FEATURES
● Ultra-low RMS Noise: 1.2μVRMS (10Hz to 100kHz)● Ultra-low Spot Noise: 3.5nV/√ at 10kHz
● Ultra-low1/fNoise:7µVP-P from0.1Hz to 10Hz
● High-Frequency PSRR: 50dB at 1MHz
● Ultra-fast Transient Response
● Dropout Voltage: 85mV Typical
● Digitally Programmable VOUT: 0.5V to 4.2V
● Output Tolerance: ±1.5% Over Line, Load, and Temperature
● Programmable Output Current Limit: ±10% at 3A
● Input Range: 0.6V to 5.5V
● Stable with Ceramic Output Capacitors (10μF Minimum)
● Parallel Multiple Devices for Higher Current
● Precision Enable/Undervoltage Lockout (UVLO)
● Power Good (PG) Flag
● 18-Lead (3mm × 3mm) LFCSP-RT Package
APPLICATIONS
● RF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAs● High Speed/High Precision Data Converters
● Low Noise Instrumentation
● Post-Regulator for Switching Supplies
● FPGA and DSP Power Supplies
● Medical
APPLICATIONS
GENERAL DESCRIPTION
The LT®3077 is a low voltage, ultra-low noise, and ultra-fast transient response linear regulator. The device supplies up to 3A with a typical dropout voltage of 85mV.
