LT83203RUDB#TRPBF

$2.55

Description：18V, 3A SYNCHRONOUS STEP-DOWN SW
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)

SKU:08547cae64af Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：18V, 3A SYNCHRONOUS STEP-DOWN SW
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：2.8V
Voltage - Input (Max)：18V
Voltage - Output (Min/Fixed)：0V
Voltage - Output (Max)：17.5V
Current - Output：3A
Frequency - Switching：300kHz ~ 6MHz
Synchronous Rectifier：Yes
Operating Temperature：-40°C ~ 150°C (TJ)
Mounting Type：Surface Mount
Package / Case：15-PowerWFQFN
Supplier Device Package：15-LFCSP (3x2)
Grade：-
Qualification：-

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LT83203RUDB#TRPBF

Overview

The LT83203RUDB#TRPBF is a synchronous step-down switching regulator from Analog Devices, operating within an input voltage range of 2.8 V to 18 V. It delivers up to 3 A of output current and integrates a high-speed power stage with a fixed switching frequency of 6 MHz. The device features a low quiescent supply current of 100 µA and a shutdown mode drawing only 2.7 mA. Designed for surface-mount assembly, it utilizes an LFCSP-15 package and supports operation across a temperature range of -40°C to +150°C.

Feature Summary

Integrates a high-frequency synchronous buck converter topology for compact design
Features Burst Mode operation to maintain high efficiency at light loads
Includes programmable soft-start and frequency foldback protection mechanisms

Applications

Industrial control systems requiring isolated or non-isolated power rails
Point-of-load regulation in embedded computing environments
Battery-powered equipment needing extended runtime through low standby consumption

Procurement Notes

Verify the specific suffix TRMPBF against TRPBF requirements, as packaging formats differ between cut tape and reel quantities. Confirm RoHS compliance status directly with the manufacturer documentation before finalizing procurement plans. Ensure availability aligns with project timelines due to potential supply constraints associated with this component series.

Selection Notes

Select this component when a high-density solution is required for voltages up to 18 V. The 6 MHz switching frequency allows for smaller external passive components compared to lower-frequency alternatives. Evaluate thermal performance carefully given the small LFCSP-15 footprint and high current capability under varying ambient conditions.

Part Context

This part belongs to the LT83203 family of Silent Switcher regulators, designed to minimize electromagnetic interference without external shielding. It serves as a modern replacement for older generation buck converters in space-constrained applications where noise sensitivity and board area are critical design parameters.