LTC3670EDDB#TRPBF

Overview

The LTC3670EDDB#TRPBF is a monolithic power management IC featuring a synchronous buck regulator and dual low dropout linear regulators. The switching converter delivers up to 400mA with an input voltage range of 2.5V to 5.5V, suitable for single-cell lithium-ion applications. It includes two independent 150mA LDOs. The device operates within a junction temperature range of -40°C to 125°C and is housed in a compact 3mm x 2mm DFN-8 package.

Feature Summary

• Integrates a high-efficiency synchronous step-down DC/DC converter with dual independent low dropout linear regulators in a single chip.
• Supports wide input voltage ranges compatible with single-cell lithium-ion and lithium-polymer battery sources.
• Provides flexible power rail generation for low-voltage application processors and ASICs.

Applications

• Powering low-voltage ASICs and SoCs from standard 3V or 3.3V rails
• Single-cell Lithium-Ion and Lithium-Ion/Polymer battery powered systems
• Triple power supply architectures requiring combined switching and linear regulation

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout and thermal pad configuration. Ensure compatibility with the target PCB footprint, as the component utilizes a small form factor DFN package. Cross-reference the datasheet revision date to validate electrical characteristics prior to final design integration.

Selection Notes

Select this component when space-constrained designs require both efficient switching conversion and clean linear regulation. It is appropriate for systems needing a primary regulated bus alongside secondary stable rails for sensitive analog circuits. Evaluate thermal performance requirements given the dense packaging and total current capabilities.

Part Context

This part belongs to the LTC3670 family of integrated power solutions designed for portable electronics. It consolidates multiple power stages into one small outline, reducing bill of materials and board area compared to discrete implementations. The series targets applications demanding high efficiency and minimal component count.

Replacement Considerations

LTC3672B-1 and LTC3672B-2 are related parts offering fixed output voltages instead of adjustable options. Verify if fixed outputs meet system requirements before substitution. Other family members may differ in package size or current ratings.