LM5085SD

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LM5085SD

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Switching Controllers

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  • メーカー品番 #LM5085SD

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仕様

属性

概要

Description

The LM5085SD is a buck (step-down) switching regulator controller from Texas Instruments, designed for efficient power management in various electronic applications. It is particularly noted for its high voltage capability, as it can handle input voltages up to 75V, making it suitable for industrial and automotive environments.
Key features of the LM5085SD include its constant on-time (COT) control architecture, which allows for fast transient response and simple loop compensation. It supports a wide input voltage range and provides high-efficiency power conversion by minimizing switching losses. The device is equipped with numerous protective features, such as current limit protection, thermal shutdown, and adjustable soft-start to ensure reliable operation under different conditions.
The package type, SD, refers to the small outline package design, which helps in saving board space in compact applications. Overall, the LM5085SD is valued for its robust performance, ease of use, and high input voltage tolerance, making it a versatile choice for designers working with high-voltage power supplies.

Equivalent

The LM5085SD is a step-down switching regulator from Texas Instruments. Equivalent products that may offer similar functionality include:
1. LM2596 series from Texas Instruments.
2. LM2675 series from Texas Instruments.
3. LMR16006 from Texas Instruments.
4. MP1584 from Monolithic Power Systems.
5. LT1074 from Analog Devices.
These alternatives vary in specifications, so it is essential to compare specific features like voltage range, current output, and package type to ensure compatibility with your requirements.

Features

The LM5085SD is a high-performance, high-voltage, non-synchronous buck controller designed for step-down applications. Key features include:
1. Wide Input Voltage Range: Supports input voltages from 4.5V to 75V, making it suitable for various applications, including industrial and automotive sectors.

2. Adjustable Output Voltage: Allows for flexible output voltage settings to meet specific application needs.
3. High Efficiency: Optimized for high efficiency with a low RDS(ON) external MOSFET and a low-side diode.
4. Constant On-Time Control: Provides fast transient response and simplifies loop compensation.
5. Adjustable Switching Frequency: Enables optimized performance and efficiency across different load conditions and requirements.
6. Integrated Protection Features: Includes under-voltage lockout (UVLO), over-current protection, and thermal shutdown to enhance reliability and safety.
7. Low Quiescent Current: Minimizes power consumption in light load conditions, improving overall efficiency.
8. Compact Package: Available in a small 10-Pin WSON package, saving space on PCB designs.
These features make the LM5085SD a versatile and robust solution for high-voltage, step-down applications.

Pinout

The LM5085SD is a high-efficiency N-Channel MOSFET switching regulator controller. It is used primarily for step-down (buck) applications. The device is housed in a 6-pin WSON (DSBGA) package. Here is a brief overview of its pin functions:
1. SW (Pin 1): Connects to the switching node and the source of the external switching MOSFET.
2. BST (Pin 2): Supplies the gate drive voltage for the high-side MOSFET. A bootstrap capacitor is connected between this pin and the SW pin.
3. UVLO (Pin 3): Allows the user to program the input undervoltage lockout threshold via an external resistor divider.
4. FB (Pin 4): The feedback pin where the output voltage is fed back to regulate the output.
5. GND (Pin 5): Ground reference for the device.
6. VIN (Pin 6): The main supply input for the controller.
The LM5085SD is designed for applications requiring a wide input voltage range and efficient power conversion.

Manufacturer

The LM5085SD is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits. The company is known for producing a wide range of electronic components, including analog chips and embedded processors, which are widely used in applications across automotive, industrial, personal electronics, and communications equipment markets. TI is recognized for its innovation and significant contributions to the electronics industry, with a strong focus on research and development to support its extensive portfolio of semiconductor products.

Application

The LM5085SD is a high-voltage, non-synchronous buck regulator designed for step-down applications. It is commonly used in areas that require efficient power conversion from a higher voltage to a lower voltage. Key application areas include:
1. Industrial Power Supplies: Converts high input voltages for industrial equipment.
2. Telecommunications: Used in power supplies for telecom infrastructure.
3. Automotive Systems: Suitable for automotive electronics that require precise voltage regulation.
4. Distributed Power Systems: Provides localized power conversion in distributed power architectures.
5. Battery-Powered Devices: Extends battery life by efficiently managing power conversion.
6. Embedded Systems: Supplies stable voltage in embedded applications.
The LM5085SD's ability to handle high input voltages and deliver efficient power conversion makes it versatile for various applications.

Package

The LM5085SD is a buck regulator controller typically available in a 10-pin WSON (Wafer-Level Small Outline No-Lead) package. This package type is compact, which aids in efficient thermal performance and space-saving in electronic designs.

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