LT1938EDD#TRPBF

$7.88

Description：IC REG BUCK ADJ 2.2A 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:1bf112a14cc2 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 2.2A 10DFN
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)：3.6V
Voltage - Input (Max)：25V
Voltage - Output (Min/Fixed)：1.265V
Voltage - Output (Max)：20V
Current - Output：2.2A
Frequency - Switching：300kHz ~ 3MHz
Synchronous Rectifier：No
Operating Temperature：0°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：10-WFDFN Exposed Pad
Supplier Device Package：10-DFN (3x3)

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LT1938EDD#TRPBF

Overview

The LT1938EDD#TRPBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range from 3.6V to 25V and provides an adjustable output voltage between 1.265V and 20V. The device delivers up to 2.2A of output current through a single positive output channel. Its switching frequency is adjustable from 300kHz to 3MHz, allowing for optimization of external component size and efficiency. The IC is housed in a 10-WFDFN package with exposed pads, suitable for surface mount installation. It functions without internal synchronous rectification.

Feature Summary

Adjustable switching frequency capability spanning from low-frequency operation to high-frequency modes for flexible design trade-offs
Wide input voltage tolerance supporting standard bus voltages and battery-powered applications
Integrated power stage designed for efficient step-down conversion in compact form factors

Applications

Portable equipment requiring efficient power management from higher voltage rails
Industrial systems utilizing 24V or similar industrial bus architectures
Embedded computing platforms needing regulated lower voltage supplies

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm tape-and-reel packaging configuration versus tube variants. Ensure that the ordering part number matches the exact electrical specifications and thermal requirements intended for the target application circuit design.

Selection Notes

Evaluate the required output current against the 2.2A limit while considering thermal dissipation capabilities inherent to the DFN package. Select external inductors and capacitors compatible with the chosen operating frequency within the specified adjustment range to ensure stable loop performance and transient response.

Part Context

This component belongs to the LT1938 family of high-efficiency step-down converters. It serves as a complete power solution integrating control logic, drivers, and power switches into a single small footprint. The series targets designs demanding high performance in space-constrained environments.