LTC3891IUDC#PBF

$10.32

Description：IC REG CTRLR BUCK 20QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:f2b56f74e87d Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

LTC3891IUDC#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 20QFN. Review the specifications below when checking this part for your BOM.

DC DC Switching Controllers specifications for LTC3891IUDC#PBF

Description：IC REG CTRLR BUCK 20QFN
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 ~ 60V
Frequency - Switching：105kHz ~ 835kHz, 350kHz ~ 535kHz
Duty Cycle (Max)：99%
Synchronous Rectifier：Yes
Clock Sync：No
Serial Interfaces：-
Control Features：Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：20-WFQFN Exposed Pad
Supplier Device Package：20-QFN (3x4)
Grade：-
Qualification：-

DC DC Switching Controllers datasheet and documents for LTC3891IUDC#PBF

LTC3891IUDC#PBF

DC DC Switching Controllers Overview

The LTC3891IUDC#PBF is a synchronous step-down DC/DC switching regulator controller from Analog Devices. It operates with an input voltage range of 4V to 60V and supports output voltages from 800mV to 24V. The device delivers up to 15A of output current with a typical no-load quiescent current of 50µA. It features a programmable switching frequency between 75kHz and 750kHz. The component is housed in a 20-WFQFN package with an exposed thermal pad, designed for surface-mount installation.

DC DC Switching Controllers Feature Summary

Synchronous buck topology driving all N-channel power MOSFET stages
Low 50µA quiescent current extending battery life in portable systems
OPTI-LOOP compensation optimizing transient response across wide capacitance ranges
Integrated soft-start and tracking capabilities for controlled startup sequences

DC DC Switching Controllers Applications

Automotive always-on systems
Battery-operated digital devices
Distributed DC power systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official documentation to confirm package type and temperature grade. Ensure compatibility with required input voltage and load current specifications. Confirm RoHS compliance status through manufacturer datasheets before integration into final designs.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring high efficiency at light loads due to low quiescent current. Consider the 20-QFN package for thermal management needs. Verify that the external MOSFETs support the required voltage ratings and current handling capabilities for the target design.

DC DC Switching Controllers Part Context

This component belongs to the LTC3891 family of synchronous step-down controllers. It shares core architecture with other variants like the LTC3891IFE and LTC3891MPFE, differing primarily in packaging and industrial or military temperature grades within the broader product line.