LT8643SIV#PBF

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LT8643SIV#PBF

+Nomenclature

IC REG BUCK ADJUSTABLE 6A 24LQFN

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Spécifications

Attribut Valeur
Package / Case Tray
Part Status Active
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 3.4V
Voltage - Input (Max) 42V
Voltage - Output (Min/Fixed) 0.97V
Voltage - Output (Max) 42V
Current - Output 6A
Frequency - Switching 200kHz ~ 3MHz
Synchronous Rectifier Yes
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount

Présentation

Description

The LT8643SIV#PBF is a synchronous step-down monolithic regulator from Analog Devices. It is designed to provide efficient and compact power conversion solutions, featuring Silent Switcher® 2 technology to minimize EMI emissions, which is ideal for noise-sensitive applications. This device can deliver up to 6A of continuous output current with high efficiency, even at high switching frequencies.
Key features include a wide input voltage range from 3V to 42V, a programmable switching frequency from 200kHz to 3MHz, and a low dropout mode to enhance efficiency at lower loads. The LT8643SIV#PBF also includes soft-start, power good signal, and short-circuit protection to ensure reliability and robust performance in various applications.
Its compact 4mm x 4mm LQFN package enhances its suitability for space-constrained designs. The combination of high efficiency, low EMI, and robust protection features make the LT8643SIV#PBF an excellent choice for automotive, industrial, and other demanding applications requiring reliable power regulation solutions.

Equivalent

The LT8643SIV#PBF is a high-efficiency, synchronous step-down regulator. Equivalent products include:
1. Texas Instruments TPS56637: A synchronous buck converter with similar features.
2. Maxim Integrated MAX20068: Offers comparable efficiency and output current capability.
3. Microchip Technology MCP16331: Another synchronous buck converter with similar functionality.
4. ON Semiconductor NCP1117: A low-dropout regulator with similar output capabilities.
These alternatives depend on specific design requirements such as input voltage range, output current, and package type.

Features

The LT8643SIV#PBF is a step-down synchronous monolithic converter designed by Analog Devices. It features ultralow quiescent current, making it ideal for applications that require high efficiency at light loads. The device operates from an input voltage range of 3.4V to 65V and can deliver up to 6A of output current. It supports a programmable switching frequency of 200kHz to 3MHz, allowing optimization between efficiency and external component size.
The LT8643SIV#PBF utilizes Silent Switcher® 2 architecture, which minimizes electromagnetic interference (EMI) and enhances efficiency. It also includes features such as output voltage tracking, precision enable, and power good flag for better system integration. The fast minimum on-time of 35ns allows for high step-down ratios even at high frequencies.
Additional features include internal compensation, a wide operating temperature range, and protection features like undervoltage lockout and thermal shutdown. The device is housed in a compact 4mm x 4mm LQFN package, making it suitable for space-constrained applications.

Pinout

The LT8643SIV#PBF is a synchronous step-down regulator from Analog Devices, designed for high efficiency and fast transient response. It comes in a 4mm x 4mm QFN package. The device has a pin count of 18.
Key functions of the LT8643SIV#PBF include:
- It operates from an input voltage range of 3.4V to 42V.
- Capable of delivering up to 6A output current.
- Features a silent switcher architecture to minimize EMI.
- Supports a fast switching frequency, adjustable up to 3MHz.
- Offers low quiescent current for efficient operation in light load conditions.
- Includes features like internal compensation, soft-start, output tracking, and power good flag.
The pin configuration and function include inputs for VIN, SW, BST, GND, and VOUT, among others, facilitating its integration into various power management systems. For detailed pin functions, it’s advisable to refer to the official datasheet provided by Analog Devices.

Manufacturer

The LT8643SIV#PBF is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company specializing in data conversion and signal processing technology. They produce a wide range of products, including analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Known for their innovation and quality, Analog Devices serves various industries, such as automotive, communications, healthcare, industrial, and consumer electronics.

Application

The LT8643SIV#PBF is a step-down regulator designed for high efficiency and low EMI performance. Its application areas include:
1. Automotive Systems: Used in infotainment, advanced driver-assistance systems (ADAS), and lighting.
2. Industrial Equipment: Suitable for factory automation and control systems.
3. Telecommunications: Powers networking devices and base stations.
4. Consumer Electronics: Utilized in devices requiring efficient power management, such as laptops and tablets.
5. Medical Devices: Supports portable and diagnostic equipment that demand stable power delivery.
6. Aerospace and Defense: Employed in avionics and communication systems.
Its features, such as fast transient response and compact size, make it versatile for various applications requiring reliable power conversion.

Package

The LT8643SIV#PBF is a voltage regulator from Analog Devices, featuring a compact package type known as a 4mm x 4mm LQFN (Leadless Quad Flatpack No-lead). This package is designed for efficient thermal performance and space-saving in electronic circuits.

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