LTC3891MPUDC#PBF

$17.20

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

SKU:cdabf19f2511 Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

LTC3891MPUDC#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 LTC3891MPUDC#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：-55°C ~ 150°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 LTC3891MPUDC#PBF

LTC3891MPUDC#PBF

DC DC Switching Controllers Overview

The LTC3891MPUDC#PBF is a high-performance single-phase synchronous step-down DC/DC controller from Analog Devices. It operates with an input voltage range of 4V to 60V and supports switching frequencies between 105kHz and 835kHz, or 350kHz and 535kHz. The device features a maximum duty cycle of 99% and includes integrated current foldback for short-circuit protection. It utilizes OPTI-LOOP compensation for optimized transient response across varying output capacitance and ESR values. The component is housed in a 20-WFQFN package with an exposed pad.

DC DC Switching Controllers Feature Summary

Supports wide input voltage ranges up to 60V for flexible system integration
Features OPTI-LOOP compensation to optimize transient response over diverse output conditions
Includes independent TRACK/SS pins for precise output voltage ramping during startup
Integrates current foldback functionality to limit MOSFET heat dissipation during fault conditions

DC DC Switching Controllers Applications

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

DC DC Switching Controllers Procurement Notes

Verify the specific suffix MPUDC against official datasheets to confirm industrial temperature ratings and package variations. Ensure compatibility with required switching frequency ranges and control characteristics such as soft-start and tracking. Confirm that the 20-QFN exposed pad thermal requirements match the target PCB layout design.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring low quiescent current and high efficiency in single-phase buck topologies. Consider the available switching frequency options to balance size and performance. Verify that the external MOSFET selection aligns with the gate drive capabilities and the specific load requirements of the target application.

DC DC Switching Controllers Part Context

This component belongs to the PolyPhase family of power management ICs from Analog Devices. It is designed to drive all N-channel synchronous power MOSFET stages. The device is part of a broader portfolio including dual-phase variants like the LTC3890, offering scalable solutions for various power density requirements.