LT3990EDD#PBF

$7.45

Description：IC REG BUCK ADJ 350MA 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:3945a6edc3dc 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 350MA 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：4.2V
Voltage - Input (Max)：62V
Voltage - Output (Min/Fixed)：1.21V
Voltage - Output (Max)：25V
Current - Output：350mA
Frequency - Switching：210kHz ~ 2.3MHz
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)

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LT3990EDD#PBF

Overview

The LT3990EDD#PBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It accepts an input voltage range from 4.2V to 62V and delivers up to 350mA of output current. The device features adjustable output voltage starting at 1.21V with a single positive output configuration. Operating frequency is adjustable between 210kHz and 2.3MHz. It utilizes a 8-DFN package with exposed pad for surface mount installation. Quiescent current consumption is specified at 2.5uA, supporting extended battery life in portable applications.

Feature Summary

Integrates high-efficiency power switch, catch diode, and boost diode on a single die
Adjustable switching frequency allows optimization for size and efficiency trade-offs
Ultra-low quiescent current enables extended operation in battery-powered systems

Applications

Battery-powered portable equipment
Industrial control systems
Automotive electronics
Distributed power architectures

Procurement Notes

Verify the specific suffix and tape/reel specifications against the official datasheet before procurement. Confirm that the 8-DFN package dimensions match your PCB footprint requirements. Ensure compatibility with the intended operating temperature range and input voltage conditions. Cross-reference the manufacturer part number to avoid counterfeit components.

Selection Notes

Select this component when a wide input voltage range up to 62V is required alongside low static current consumption. Consider the adjustable frequency feature if EMI constraints or inductor size limitations exist. Evaluate the 350mA output current capability against peak load demands. Compare package thermal performance with alternative regulators if high ambient temperatures are expected.

Part Context

This part belongs to the LT3990 family of step-down regulators designed for high-voltage, low-current applications. It distinguishes itself through integrated passive components and ultra-low quiescent current. The family targets applications requiring efficient power conversion from high-voltage sources while maintaining minimal standby power drain.