LTC3851AIUD-1#PBF

$6.12

Description：IC REG CTRLR BUCK 16QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:77bc918e2521 Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

LTC3851AIUD-1#PBF is listed in the DC DC Switching Controllers range at ChipApex. The manufacturer field lists Analog Devices Inc.. Its product description is IC REG CTRLR BUCK 16QFN. Review the specifications below when checking this part for your BOM.

DC DC Switching Controllers specifications for LTC3851AIUD-1#PBF

Description：IC REG CTRLR BUCK 16QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Output Type：Transistor Driver
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：4V ~ 38V
Frequency - Switching：235kHz ~ 750kHz
Duty Cycle (Max)：99%
Synchronous Rectifier：Yes
Clock Sync：No
Serial Interfaces：-
Control Features：Enable, Frequency Control, Power Good, Soft Start, Tracking
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：16-WFQFN Exposed Pad
Supplier Device Package：16-QFN (3x3)

DC DC Switching Controllers datasheet and documents for LTC3851AIUD-1#PBF

LTC3851AIUD-1#PBF

DC DC Switching Controllers Overview

The LTC3851AIUD-1#PBF is a high-performance synchronous step-down switching regulator controller from Analog Devices. It operates with an input voltage range of 4V to 38V and supports output voltages from 800mV to 5.5V. The device drives all N-channel synchronous power MOSFETs, delivering up to 25A of output current. It features a constant frequency current mode architecture with a switchable frequency between 250kHz and 750kHz. The component functions within a temperature range of -40°C to +125°C and utilizes a 16-pin QFN package.

DC DC Switching Controllers Feature Summary

Drives all N-channel synchronous power MOSFET stage for high efficiency
Constant frequency current mode architecture allows phase-lockable operation
Integrated soft start, tracking, and shutdown control capabilities

DC DC Switching Controllers Applications

High efficiency 3.3V/15A step-down converter designs
1.8V/5A converters utilizing pulse skip operation
1.5V/15A synchronized regulators operating at 350kHz

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when ordering. Confirm the AI grade designation matches required automotive or industrial specifications. Ensure the 16-QFN footprint aligns with PCB layout guidelines provided in the official datasheet. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and correct revision level.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring wide input voltage ranges up to 38V. It is suitable for designs needing precise load regulation and flexible frequency synchronization. Consider the thermal performance of the QFN package for high-current implementations. Evaluate external MOSFET selection to fully utilize the 25A capability while maintaining efficiency targets across the operating temperature range.

DC DC Switching Controllers Part Context

This component belongs to the LTC3851A family of wide input voltage synchronous step-down DC/DC controllers. It shares architectural similarities with other members like the LTC3851EUD-1 and LTC3851IUD-1 but differs in grading and packaging. The series is designed for versatile power management solutions requiring robust transient response and efficient power conversion in compact form factors.