LTC3670EDDB#TRMPBF

Overview

The LTC3670EDDB#TRMPBF is a monolithic synchronous step-down switching regulator integrated with dual low dropout linear regulators. It features a 400mA buck converter and two 150mA LDOs within a compact 3mm x 2mm DFN package. The device supports an input voltage range of 2.5V to 5.5V, making it suitable for single-cell lithium-ion applications. It provides multiple output rails including 1.2V, 2.8V, and 3.3V.

Feature Summary

• Integrates a high-efficiency synchronous buck regulator with dual independent low dropout linear regulators on a single chip
• Designed for space-constrained portable electronics requiring triple power supply generation from a single source
• Optimized for operation with single-cell lithium-ion and lithium-ion/polymer battery configurations

Applications

• Powering low voltage ASICs and SoCs from standard 3V or 3.3V rails
• Single-cell Lithium-Ion battery powered devices
• Lithium-Ion/Polymer battery operated applications
• Portable consumer electronics requiring compact power management solutions

Procurement Notes

Verify the specific suffix and tape-and-reel packaging designation when ordering. Confirm that the component meets RoHS compliance requirements for your region. Ensure the supplier provides valid traceability documentation. Check for any distribution restrictions or limited availability notices associated with this specific Analog Devices part number before finalizing procurement plans.

Selection Notes

Select this component when a combined switching and linear regulation solution is required in a minimal footprint. It is appropriate for designs needing a primary buck rail alongside auxiliary LDO rails. Consider the 400mA buck current limit and 150mA LDO limits against total system load requirements. Evaluate thermal performance within the small DFN package under maximum load conditions.

Part Context

This part belongs to the LTC3670 family of power management ICs designed for portable applications. It consolidates three power supplies into one small outline package. The series targets mobile phones, PDAs, and other handheld devices where board space is at a premium. It simplifies design by reducing the component count typically needed for multi-rail systems.

FAQ

What is the input voltage range for the LTC3670?

The device operates with an input voltage range of 2.5V to 5.5V.

How many outputs does the LTC3670 provide?

It provides three outputs: one adjustable buck converter and two fixed LDO outputs.