LT3470AEDDB#TRPBF

$7.24

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

SKU:b5fbddeb7697 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：0°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：8-WFDFN Exposed Pad
Supplier Device Package：8-DFN (3x2)

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LT3470AEDDB#TRPBF

Overview

The LT3470AEDDB#TRPBF is a micropower buck DC/DC converter from Analog Devices, housed in an 8-WFDFN (3x2 mm) package. It integrates a 440mA power switch, catch diode, and boost diode. The device supports an input voltage range of 4V to 23V and provides an adjustable output voltage from 1.25V to 16V with a maximum output current of 250mA. It operates at a switching frequency of 2.1MHz and features a quiescent current of 25µA. The component functions within a junction temperature range of -40°C to 125°C.

Feature Summary

Integrates high-efficiency power switch and external component-free boost/catch diodes for compact design
Combines Burst Mode operation with continuous conduction to minimize ripple and allow small passive components
Features low quiescent current consumption for extended battery life in portable applications

Applications

Battery-powered portable electronics requiring efficient step-down conversion
Industrial control systems utilizing single-supply architectures
Automotive infotainment and sensor nodes operating on 12V or 24V rails

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging with lead-free finish. Confirm the A-grade designation matches thermal and electrical requirements. Cross-reference the 8-WFDFN footprint against PCB layout guidelines. Ensure compatibility with intended input voltage ranges before finalizing procurement orders.

Selection Notes

Select this component when space constraints necessitate an integrated solution without external Schottky diodes. The 440mA switch rating suits loads up to 250mA with headroom. Consider the 2.1MHz frequency for smaller inductor sizes compared to lower-frequency alternatives. Verify thermal dissipation capabilities within the 3x2mm DFN package for the target ambient conditions.

Part Context

This part belongs to the LT3470 family of micropower synchronous buck converters. It shares architectural similarities with the LT3470 but offers enhanced performance characteristics such as higher switch current capability. The family targets applications requiring high efficiency in minimal footprints, serving as a drop-in replacement for older discrete solutions or less integrated regulators.