LT3991EDD#TRPBF

$8.29

Description：IC REG BUCK ADJ 1.2A 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:fd9faa2c69f5 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 1.2A 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)：4.3V
Voltage - Input (Max)：55V
Voltage - Output (Min/Fixed)：1.19V
Voltage - Output (Max)：30V
Current - Output：1.2A
Frequency - Switching：200kHz ~ 2MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：10-WFDFN Exposed Pad
Supplier Device Package：10-DFN (3x3)
Grade：-
Qualification：-

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LT3991EDD#TRPBF

Overview

The LT3991EDD#TRPBF is a step-down switching regulator IC manufactured by Analog Devices Inc. It operates with an input voltage range from 4.3V to 55V and provides a single adjustable output ranging from 1.19V to 30V. The device delivers up to 1.2A of output current and supports a switch frequency between 200kHz and 2MHz. It utilizes a 10-WFDFN package with an exposed pad for surface mount installation. The component functions as a positive buck converter and is rated for operation within a junction temperature range of -40°C to 125°C.

Feature Summary

Supports wide input voltage ranges suitable for industrial applications
Enables flexible output voltage configuration via external resistors
Offers programmable switching frequency for optimization

Applications

Industrial control systems
Automotive electronics
Point-of-load regulation

Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when ordering. Confirm that the DFN-10 footprint matches the design layout. Ensure the operating environment stays within the specified thermal limits. Check for RoHS compliance documentation if required by project standards. Validate the manufacturer part number against official Analog Devices records before finalizing procurement.

Selection Notes

Select this component when a high-voltage input buck converter is required in a compact form factor. The adjustable frequency feature allows designers to optimize for efficiency or EMI performance. The exposed pad design facilitates effective thermal dissipation for sustained high-current operations. Consider the 1.2A limit when sizing external components for peak load requirements.

Part Context

This part belongs to the LT3991 family of high voltage, low quiescent current step-down regulators. The series is designed for applications requiring efficient power conversion from higher voltage rails. The DFN package variant offers a small solution size compared to larger leaded packages. It serves as a core power management element in dense circuit designs.