LT8645SEV-2#PBF

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LT8645SEV-2#PBF

65V, 8A SYNC BUCK SILENT SWITCHE

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Specifications

Package Tray
ProductStatus Active
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 3.4V
Voltage-Input(Max) 65V
Voltage-Output(Min/Fixed) 0.97V
Voltage-Output(Max) 12V
Current-Output 8A
Frequency-Switching 200kHz ~ 2.2MHz
SynchronousRectifier Yes
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 32-TFQFN Exposed Pad

Overview

Description

The LT8645SEV-2#PBF is a high-efficiency, high-speed synchronous monolithic step-down switching regulator from Analog Devices. It features a 3.4V to 65V input voltage range, making it suitable for automotive and industrial applications. With its Silent Switcher® architecture, it minimizes electromagnetic interference (EMI) while delivering up to 8A of continuous output current and 15A peak output. The device operates at a fixed 400kHz frequency, which can be synchronized to an external clock.
Key features include low quiescent current, fast transient response, and a low minimum on-time, allowing for high step-down ratios even at high switching frequencies. The LT8645SEV-2#PBF also supports a wide output voltage range from 0.81V to VIN, providing design flexibility. Additional features include programmable undervoltage lockout, short-circuit protection, thermal shutdown, and a power-good flag for reliable operation.
Its compact 4mm x 5mm QFN package and integrated MOSFETs reduce the total solution footprint, making it ideal for space-constrained designs. Overall, the LT8645SEV-2#PBF is designed for high efficiency, low noise, and robust performance in demanding power supply applications.

Features

The LT8645SEV-2#PBF is a synchronous step-down regulator from Analog Devices. It is designed to deliver a high-efficiency, low-noise solution suitable for a wide range of applications. Key features include:
1. Input Voltage Range: It operates from 3V to 65V, accommodating a variety of source types.
2. Output Current: Capable of delivering up to 8A of continuous output current.
3. Efficiency: High efficiency of up to 95%, thanks to synchronous rectification.
4. Frequency: Programmable switching frequency from 200kHz to 2.2MHz, allowing for optimization between efficiency and component size.
5. Burst Mode Operation: Ensures high efficiency at light loads.
6. Silent Switcher 2 Architecture: Minimizes EMI and enhances performance.
7. Fast Transient Response: Designed for applications requiring quick response to load changes.
8. Protection Features: Includes short-circuit, thermal shutdown, and output overvoltage protection.
9. Package: Available in a compact 4mm x 5mm LQFN package.
These features make the LT8645SEV-2#PBF suitable for automotive, industrial, and general-purpose power applications.

Package

The LT8645SEV-2#PBF is typically provided in a 32-lead, 5mm × 6mm plastic QFN package, which is a surface-mount package designed for compact and efficient thermal performance in electronic circuits.

Pinout

The LT8645SEV-2#PBF is a monolithic buck switching regulator from Analog Devices. It comes in a 32-pin, 4mm x 6mm LQFN package. The device is designed for high efficiency and operates with input voltages from 3.4V to 65V, delivering up to 8A of continuous output current. It features Silent Switcher architecture to minimize electromagnetic interference (EMI) while maintaining high efficiency.
Key functions include:
1. High Efficiency: Up to 95% efficiency due to synchronous rectification.
2. Fast Transient Response: Internal compensation helps in achieving a fast transient response.
3. Adjustable Output Voltage: The output voltage can be set by a resistor divider.
4. Compact Design: Small package size and high efficiency allow for a compact solution.
5. Low EMI: Silent Switcher technology reduces EMI emissions.
6. Additional Features: Includes a power good flag, soft-start capability, and thermal shutdown protection.
The LT8645SEV-2#PBF is well-suited for applications requiring high efficiency, compact size, and low EMI, such as automotive, industrial, and telecommunications systems.

Manufacturer

The LT8645SEV-2#PBF is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design and manufacturing of a wide range of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company serves various industries including automotive, communications, industrial, healthcare, and consumer electronics. Known for its high-performance products, Analog Devices focuses on delivering solutions for signal processing, power management, data conversion, and other critical functions in electronic systems.

Application

The LT8645SEV-2#PBF is a high-efficiency, high-frequency synchronous step-down DC/DC converter. Its application areas include automotive systems, industrial power supplies, telecom power systems, distributed power architectures, and battery-powered devices. Its key features, such as high efficiency, fast transient response, and low EMI emissions, make it suitable for applications requiring compact, efficient, and reliable power conversion.

Equivalent

The LT8645SEV-2#PBF is a high-efficiency, monolithic step-down regulator. Equivalent products include the TPS568215 from Texas Instruments, MP4560 from Monolithic Power Systems, and the LM76003 from Texas Instruments. When selecting an equivalent, ensure voltage, current ratings, and other specifications like switching frequency and efficiency match your application's requirements.

Shipping

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Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

Payments

Payment Methods

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