LTC3891MPFE#TRPBF

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LTC3891MPFE#TRPBF

IC REG CTRLR BUCK 20TSSOP

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Especificaciones

Part Status Active
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
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-TSSOP (0.173", 4.40mm Width) Exposed Pad
Supplier Device Package 20-TSSOP-EP
Base Product Number LTC3891

Descripción general

Description

The LTC3891MPFE#TRPBF is a high-performance, synchronous step-down DC/DC controller manufactured by Analog Devices. It is designed for applications requiring efficient power conversion and operates over a wide input voltage range from 4V to 60V, making it suitable for automotive, industrial, and telecom environments. The controller can deliver output currents up to several amperes, depending on external components.
Key features include a low minimum on-time of 95ns, allowing high step-down ratios at high frequencies, and it supports output voltages as low as 0.8V. It offers programmable fixed switching frequencies from 50kHz to 900kHz and can be synchronized to an external clock. The LTC3891 also supports Burst Mode operation for high efficiency at light loads and has a no-load quiescent current of 50μA.
It includes onboard protection features like overvoltage, overcurrent, and thermal shutdown to ensure reliability. The package type, MPFE#TRPBF, indicates a thermally enhanced 28-lead TSSOP package, suitable for space-constrained applications. This controller is ideal for systems requiring robust and flexible power management solutions.

Features

The LTC3891MPFE#TRPBF is a high-performance DC/DC step-down switching regulator controller manufactured by Analog Devices. It features a wide input voltage range from 4V to 60V, making it suitable for a variety of applications. The device supports both Burst Mode operation for high efficiency at low load currents and continuous mode for low noise and better load regulation.
Key features include:
- Up to 99% duty cycle for low dropout applications.
- Adjustable output voltage ranging from 0.8V to 24V.
- A programmable fixed frequency from 50kHz to 900kHz, or synced to an external clock.
- Comprehensive protection features, including overvoltage, overcurrent, and thermal shutdown.
- It supports a wide operating temperature range, specifically suited for demanding environments.
The LTC3891MPFE#TRPBF is available in a thermally enhanced 28-lead TSSOP package, ensuring efficient heat dissipation. This controller is ideal for use in automotive, industrial, and distributed power systems where high efficiency and reliable performance are crucial.

Package

The LTC3891MPFE#TRPBF is housed in a 24-lead TSSOP (Thin Shrink Small Outline Package) with an exposed pad for improved thermal performance. The "#TRPBF" suffix indicates it is tape and reel packaging, lead-free, and RoHS compliant.

Pinout

The LTC3891MPFE#TRPBF is a high-performance step-down DC/DC switching regulator controller. It typically comes in a 24-lead TSSOP package. The pin count for this package, therefore, is 24.
The function of the LTC3891 is to provide a highly efficient and easily customizable solution for high-power voltage regulation. It operates over a wide input voltage range and supports synchronous rectification, which improves efficiency. The device is capable of outputting up to several tens of amperes, depending on external components and conditions, making it suitable for a variety of applications in telecommunications, automotive, and other high-power electronics.
Key features include programmable output voltage, adjustable operating frequency, and the ability to synchronize with an external clock. The device also provides features like soft-start, overcurrent protection, and efficient operation at light loads through Burst Mode® operation.

Manufacturer

The LTC3891MPFE#TRPBF is manufactured by Analog Devices, Inc. (ADI). Analog Devices is a global semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits. These components are used in various electronic equipment and applications, covering sectors such as automotive, industrial, healthcare, communications, and consumer electronics. ADI is known for its innovative solutions that bridge the physical and digital worlds, enabling advanced systems in industries ranging from automation to healthcare.

Application

The LTC3891MPFE#TRPBF is a step-down DC/DC controller used in applications requiring efficient power conversion. Common areas include telecommunications, automotive systems, industrial equipment, and distributed power systems. It's suitable for situations needing high efficiency, wide input voltage range, and robust performance under varying operating conditions. Its high current capability and adjustable output voltage make it ideal for powering processors, FPGAs, and other digital circuits.

Equivalent

The LTC3891MPFE#TRPBF is a DC/DC step-down controller. Equivalent products include:
1. Texas Instruments: LM3150 - Simple Switcher Synchronous Buck Controller.
2. Maxim Integrated: MAX17503 - High-Efficiency, Synchronous Step-Down DC-DC Converter.
3. ON Semiconductor: NCP302155 - DC/DC Switching Controller.
4. Microchip: MCP16331 - High-Speed Step-Down Regulator.
These alternatives offer similar functionalities in step-down regulation with varying specifications. Always check compatibility with your specific application requirements.

Envío

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Referencia de tarifas de envío (DHL/FedEx):

DHL: El costo de envío oscila entre $25-$45 (0.5kg), con un tiempo de entrega estimado de 2-5 días hábiles.

FedEx: El costo de envío oscila entre $25-$40 (0.5kg), con un tiempo de entrega estimado de 3-7 días hábiles.

UPS: El costo de envío oscila entre $25-$45 (0.5kg), con un tiempo de entrega estimado de 3-7 días hábiles.

TNT: El costo de envío oscila entre $25-$65 (0.5kg), con un tiempo de entrega estimado de 3-7 días hábiles.

EMS: El costo de envío oscila entre $30-$50 (0.5kg), con un plazo de entrega estimado de 7-15 días hábiles.

Correo aéreo registrado: El costo de envío es de $2-$4 (0.1kg), con un tiempo de entrega estimado de 5-20 días hábiles.

Pagos

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