LT3078AV#TRPBF

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The LT3078AV#TRPBF is a low voltage, high PSRR linear regulator from Analog Devices Inc. It delivers up to 5A output current with a typical dropout voltage of 55mV. The device operates within an output voltage range of 0.6V to 5.5V and features digitally programmable current limiting accurate to ±3% at 5A. Output voltage selection allows adjustments in 50mV increments between 0.5V and 1.2V, and 100mV increments between 1.2V and 1.8V. Key electrical specifications include ultra-low RMS noise of 1.3μV (10Hz to 100kHz), point noise of 3.5nV/√Hz at 10kHz, and 49dB PSRR at 1MHz. The component is housed in a 3mm x 4mm 22-lead LQFN package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Ultra-low noise performance with specified RMS and point noise metrics for sensitive signal chains
• Digital programmability for precise output voltage selection across defined ranges
• High power supply rejection ratio (PSRR) ensuring effective noise filtering
• Integrated protection mechanisms including under-voltage lockout and thermal shutdown

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Powering RF circuits such as PLLs, VCOs, mixers, LNAs, and PAs
• Supplying high-speed or high-precision data converters
• Serving as a post-regulator for switching power supplies
• Providing power to FPGAs and DSPs
• Low-noise instrumentation and medical applications

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'AV' against the official datasheet to confirm temperature grade and packaging configuration. Ensure compatibility with the required output voltage settings and current limits. Check for pin-out alignment with the 22-lead LQFN footprint. Confirm that the digital control interface matches the system design requirements for voltage programming.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this regulator for applications requiring high current capability combined with strict noise constraints. Consider the digital voltage programming feature for flexible design adjustments. Evaluate the thermal performance within the LQFN package for the intended load conditions. Verify that the input voltage range supports the required dropout margin during operation.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The LT3078 series represents Analog Devices' solution for low-dropout regulation in compact form factors. It targets designs needing clean power for mixed-signal systems. The device integrates advanced control features to maintain stability under varying load conditions. Its architecture supports parallel operation for increased current capacity.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Consult the manufacturer's cross-reference guide for verified substitutes. Ensure any replacement matches the 22-lead LQFN package dimensions. Verify equivalent noise performance and current handling capabilities. Confirm compatibility with the digital voltage programming interface.