LT3470AHDDB#TRMPBF

$8.71

Description：IC REG BUCK ADJ 250MA 8DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:641b40b57db4 Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK ADJ 250MA 8DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：4V
Voltage - Input (Max)：40V
Voltage - Output (Min/Fixed)：1.25V
Voltage - Output (Max)：16V
Current - Output：250mA
Frequency - Switching：-
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 150°C (TJ)
Mounting Type：Surface Mount
Package / Case：8-WFDFN Exposed Pad
Supplier Device Package：8-DFN (3x2)

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LT3470AHDDB#TRMPBF

Overview

The LT3470AHDDB#TRMPBF is a micropower step-down DC/DC converter manufactured by Analog Devices Inc. It integrates a 440mA power switch, catch diode, and boost diode into an 8-pin DFN package measuring 2mm x 3mm. The device operates with an input voltage range of 4V to 23V and provides an adjustable output voltage from 1.25V to 16V. It delivers up to 250mA of output current while maintaining low ripple through combined Burst Mode and continuous operation. The component supports a switching frequency of 1.2MHz and functions within a junction temperature range of -40°C to 125°C.

Feature Summary

Integrates a 440mA power switch, catch diode, and boost diode for compact design
Combines Burst Mode and continuous operation to minimize output ripple
Enables the use of miniature inductors and capacitors due to high switching frequency

Applications

Battery-powered portable electronics requiring low quiescent current
Space-constrained embedded systems utilizing small passive components
Industrial control modules operating within wide input voltage ranges

Procurement Notes

Verify the specific suffix HDDB against official Analog Devices documentation to confirm pinout and thermal pad configuration. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Cross-reference the datasheet revision date to validate electrical characteristics before finalizing procurement specifications.

Selection Notes

Select this component when space constraints necessitate a small DFN package alongside integrated boost and catch diodes. It is suitable for applications requiring adjustable output voltages up to 16V with moderate load currents. Consider the 4V minimum input voltage requirement and ensure it aligns with the system's supply rails.

Part Context

This part belongs to the LT3470A series of micropower buck regulators. It shares architectural similarities with other members like the LT3470EDDB but features distinct internal switch ratings and package options. The series is designed for efficiency in battery-operated devices where size and standby current are critical parameters.