LT3470AIDDB#TRPBF

Overview

The LT3470AIDDB#TRPBF is a micropower buck DC/DC converter from Analog Devices, integrating a 440mA power switch, catch diode, and boost diode into an 8-WFDFN (3x2mm) package. It operates with an input voltage range of 4V to 40V and provides an adjustable output voltage from 1.25V to 16V. The device delivers up to 250mA of output current. Key electrical specifications include a quiescent current of 25µA and a switching frequency of 1.2MHz. It supports operation temperatures from -40°C to +125°C TJ.

Feature Summary

• Integrates high-efficiency power switch and diodes in a compact footprint
• Combines Burst Mode and continuous conduction for low ripple
• Supports wide input voltage ranges for flexible system design

Applications

• Battery-powered portable electronics
• Industrial control systems
• Automotive infotainment modules

Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing. Confirm the thermal pad connection requirements for the DFN package during assembly planning. Ensure the ordering part number matches the exact temperature grade and package variant required for the target application environment.

Selection Notes

Select this component for designs requiring minimal external components and low standby power consumption. The integrated boost diode simplifies step-up applications, while the buck topology suits standard voltage regulation. Consider the 250mA limit for load requirements and the 3x2mm package for space-constrained PCB layouts.

Part Context

This part belongs to the LT3470 family of micropower regulators. It shares architectural similarities with the standard LT3470 but features an enhanced internal power switch rated for higher current capability compared to the base model. The IDDB suffix denotes the industrial temperature grade and specific DFN package configuration.

Replacement Considerations

LT3470AIDDB#TRMPBF offers identical electrical performance in cut-tape packaging.