LT3690HUFE#PBF

$10.80

Description：IC REG BUCK ADJ 4A 26QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:9d7a31de20ce Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

Product Detailed Parameters

Description：IC REG BUCK ADJ 4A 26QFN
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)：3.9V
Voltage - Input (Max)：36V
Voltage - Output (Min/Fixed)：0.8V
Voltage - Output (Max)：20V
Current - Output：4A
Frequency - Switching：138kHz ~ 1.5MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 150°C (TJ)
Mounting Type：Surface Mount
Package / Case：26-WFQFN Exposed Pad
Supplier Device Package：26-QFN (4x6)

Download product information

LT3690HUFE#PBF

Overview

The LT3690HUFE#PBF is an automotive-grade, adjustable frequency monolithic synchronous step-down switching regulator manufactured by Analog Devices. It accepts input voltages from 3.9V to 36V and delivers up to 4A of output current. The device features a fixed internal switching frequency of 1.5MHz, though it supports external synchronization. It provides an adjustable output voltage range from 800mV to 20V with a typical quiescent current of 70µA. Operating within a temperature range of -40°C to +150°C, it utilizes a QFN-26 package for compact integration in high-efficiency power designs.

Feature Summary

Integrated high-efficiency synchronous rectification with low on-resistance switches eliminates the need for external catch diodes.
Adjustable switching frequency allows optimization for efficiency or component size requirements.
Automotive qualification ensures reliable operation under extended temperature conditions and harsh environments.
Current mode control topology provides fast transient response and inherent cycle-by-cycle current limiting.

Applications

Automotive always-on systems requiring high reliability
Battery-powered digital devices needing low quiescent current
Distributed DC power systems in industrial applications

Procurement Notes

Verify the specific HU suffix indicates automotive grade qualification and extended temperature range capabilities. Confirm the QFN-26 package dimensions match your PCB footprint design. Ensure compatibility with the required input voltage range and thermal management strategy for the target operating environment.

Selection Notes

Select this component when designing for automotive applications requiring a 36V input capability and 4A output current. Consider the 1.5MHz fixed frequency for balancing EMI and passive component size. Evaluate the 70µA quiescent current against system standby power requirements. Verify that the QFN-26 package thermal performance meets the application's heat dissipation needs.

Part Context

This part belongs to the LT3690 family of synchronous buck regulators. The HUFE#PBF designation specifies the automotive grade (H), temperature range (U), lead-free packaging (FE), and tube packing format (#PBF). It is distinct from non-automotive variants which may have different temperature ratings or electrical characteristics.