LT8640EUDC#TRPBF

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LT8640EUDC#TRPBF

IC REG BUCK ADJUSTABLE 5A 20QFN

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規格

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 3.4V
Voltage-Input(Max) 42V
Voltage-Output(Min/Fixed) 0.97V
Voltage-Output(Max) 42V
Current-Output 5A
Frequency-Switching 210kHz ~ 2MHz
SynchronousRectifier Yes
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 20-WFQFN, 18 Leads, Exposed Pad

概述

Description

The LT8640EUDC#TRPBF is a high-efficiency, synchronous step-down (buck) DC/DC converter by Analog Devices under the Power by Linear product line. It is designed to deliver up to 5A of continuous output current with input voltages ranging from 3V to 42V, making it suitable for automotive, industrial, and general-purpose applications. This device features Silent Switcher® architecture, which minimizes electromagnetic interference (EMI) and improves efficiency, both crucial for sensitive applications.
Key features include a fast minimum on-time of 25ns, which allows high switching frequencies even at high step-down ratios, and an integrated power switch to reduce board space. It offers low quiescent current operation, which is important for battery-powered applications, and supports spread spectrum frequency modulation for further EMI reduction. The converter also includes a soft-start feature to prevent inrush current at startup and thermal shutdown protection.
The LT8640EUDC#TRPBF is housed in a small 16-lead, 3mm x 3mm QFN package, making it compact for space-constrained designs. Overall, this device is aimed at applications requiring high efficiency, low noise, and compact size.

Features

The LT8640EUDC#TRPBF is a high-efficiency synchronous step-down regulator from Analog Devices. It features a wide input voltage range from 3V to 42V, making it suitable for automotive and industrial applications. The device delivers up to 5A of continuous output current with efficiency as high as 95%.
Key features include:
- Fast minimum on-time of just 30ns, allowing high-frequency operation.
- Low quiescent current, optimizing it for battery-powered systems.
- Silent Switcher architecture to minimize EMI emissions.
- Output voltage is adjustable from 0.8V to VIN.
- Internal compensation and peak current mode control for stable operation.
- Integrated power MOSFETs to reduce external components and cost.
- Thermal shutdown and overcurrent protection for reliable operation.
- Compact 4mm x 4mm QFN package.
These features make the LT8640EUDC#TRPBF suitable for applications requiring high efficiency and low EMI, such as automotive systems, industrial power supplies, and distributed power regulation.

Package

The LT8640EUDC#TRPBF is packaged in a 12-lead (4mm x 4mm) plastic QFN (Quad Flat No-Lead) package.

Pinout

The LT8640EUDC#TRPBF is a 42V, 5A synchronous step-down regulator from Analog Devices' Power by Linear family. It is housed in a 3mm x 4mm DFN (Dual Flat No-leads) package with 12 pins. The device employs a Silent Switcher® architecture to minimize EMI emissions, making it suitable for noise-sensitive applications. Its high efficiency and fast switching frequency allow for compact power supply designs.
Key pin functions include:
- VIN: Input voltage supply.
- SW: Switch node connection to the inductor.
- GND: Ground.
- BST: Bootstrap capacitor connection for the high-side gate drive.
- VOUT: Output voltage.
- FB: Feedback input for setting the output voltage.
- BIAS: Internal regulator supply, used to improve efficiency.
- RT/SYNC: Sets the switching frequency or synchronizes to an external clock.
- TR/SS: Tracks the output voltage or sets soft-start to limit inrush current.
- PG: Power good indicator.
- EN/UV: Enable pin and undervoltage lockout setting.
The LT8640EUDC offers fast transient response, low quiescent current, and operates over a wide input range, making it ideal for automotive, industrial, and other applications requiring efficient power conversion.

Manufacturer

The LT8640EUDC#TRPBF is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company specializing in the design and manufacturing of a wide array of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. They serve a broad spectrum of industries, including consumer electronics, communications, automotive, industrial, and healthcare. Known for their high-performance products, Analog Devices is a key player in the development of technologies that bridge the physical and digital worlds.

Application

The LT8640EUDC#TRPBF is a step-down regulator used in various applications, including automotive systems, industrial power supplies, telecommunications, and general electronics. Its features, such as high efficiency, low EMI, and fast transient response, make it suitable for powering microcontrollers, sensors, and other electronic components. Additionally, it's used in battery-powered devices due to its low quiescent current, enhancing battery life.

Equivalent

The LT8640EUDC#TRPBF is a high-efficiency, step-down regulator from Analog Devices. Equivalent products from other manufacturers include:
1. Texas Instruments: TPS54360 - A 60-V, 3.5-A step-down regulator.
2. Microchip Technology: MIC28514 - A 75V, 5A buck regulator.
3. Maxim Integrated: MAX17504 - A high-efficiency, high-voltage, synchronous step-down converter.
4. ON Semiconductor: NCP3170 - A 3.5 A synchronous buck converter.
Always verify specifications and performance characteristics to ensure suitability for your specific application.

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