LTC3700EMS#PBF

Overview

The LTC3700EMS#PBF is a dual-output power management IC featuring an integrated synchronous buck converter and a low-dropout (LDO) regulator within a compact 10-lead MSOP package. The switching regulator supports input voltages from 5V to 9V, delivering up to 1A at 3.3V output. The LDO provides a fixed 2.5V output at 150mA from inputs between 3.3V and 5V. Operating at a typical frequency of 550kHz, the device combines high-efficiency DC-DC conversion with clean linear regulation for applications requiring multiple voltage rails.

Feature Summary

• Integrates a synchronous step-down regulator and a low-dropout linear regulator in a single component
• Provides independent non-isolated outputs for simultaneous high-current switching and precision linear regulation
• Utilizes a compact 10-lead MSOP package to minimize printed circuit board area

Applications

• Evaluation of dual-rail power architectures using demonstration boards such as DC463A
• Systems requiring combined switching efficiency and low-noise linear supply capabilities
• Portable electronics needing compact multi-voltage power solutions

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the 10-lead MSOP package dimensions match your layout requirements. Ensure input voltage ranges align with system specifications before integration. Cross-reference official Analog Devices documentation for thermal performance data under expected load conditions.

Selection Notes

Select this component when a design requires both a high-current buck converter and a separate low-current LDO from a single footprint. It is suitable for systems where space constraints prevent using two separate discrete regulators. Verify that the 550kHz switching frequency does not interfere with sensitive analog sections of the application.

Part Context

This part belongs to the LTC3700 series of power management ICs designed by Analog Devices. It is distinct from other series like the LTC3703 or LT3970 which feature different topologies or input voltage ranges. The device serves as a consolidated solution for mixed-mode power regulation needs in consumer and industrial electronics.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation. Evaluate alternative dual-output regulators based on pin compatibility and electrical specifications if replacement is necessary.