LM5576MH

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LM5576MH

IC REG BUCK ADJ 3A 20HTSSOP

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Especificaciones

Package Tube
Series SIMPLE SWITCHER®
ProductStatus Not For New Designs
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 6V
Voltage-Input(Max) 75V
Voltage-Output(Min/Fixed) 1.225V
Voltage-Output(Max) 70V
Current-Output 3A
Frequency-Switching 50kHz ~ 500kHz
SynchronousRectifier No
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 20-PowerTSSOP (0.173, 4.40mm Width)

Descripción general

Description

The LM5576MH is a step-down switching voltage regulator, part of Texas Instruments' SIMPLE SWITCHER family. It is designed to deliver high-efficiency performance in power supply applications, capable of driving up to a 3A load. The device operates over a wide input voltage range of 6V to 75V, making it suitable for industrial and automotive environments.
The LM5576MH features a fixed switching frequency of 500 kHz, which allows for the use of smaller external components and a compact overall design. It also includes a wide array of integrated protection features, such as thermal shutdown, current limiting, and under-voltage lockout, enhancing its reliability and safety in various operational conditions.
Additionally, the LM5576MH offers a programmable output voltage, adjustable via an external resistor divider, and features a soft-start function to prevent inrush current during startup. Its TO-263-7 package provides efficient heat dissipation, further supporting high-performance applications. This regulator is especially useful in designs requiring stable, efficient power conversion with minimal external components.

Features

The LM5576MH is a high-performance, step-down switching voltage regulator designed for efficient power management applications. It operates over a wide input voltage range of 6V to 75V, making it suitable for various applications including industrial and automotive systems. The device can deliver up to 3A of continuous output current.
Key features include:
1. High Efficiency: The regulator offers high efficiency across a wide load range, which is crucial for reducing power loss and heat generation.

2. Switching Frequency: Adjustable switching frequency up to 500 kHz, allowing for optimization between efficiency and component size.
3. Integrated Features: Includes an internal N-channel MOSFET and a high-side current sense amplifier, simplifying the design and reducing external component count.
4. Protection Mechanisms: Offers features like thermal shutdown, current limiting, and under-voltage lockout to enhance reliability and protect against faults.
5. Soft Start: Programmable soft-start feature minimizes inrush current during startup.
6. Feedback Voltage: 1.225V feedback voltage, facilitating adjustable output voltage through external resistors.
7. Package: Available in a thermally enhanced 20-lead TSSOP package, aiding in heat dissipation.
These features make the LM5576MH a versatile and robust choice for efficient power conversion in demanding environments.

Package

The LM5576MH is a high-voltage switch-mode regulator available in a 20-lead TSSOP (Thermally Enhanced Thin Shrink Small Outline Package) with an exposed pad for better thermal performance.

Pinout

The LM5576MH is a step-down switching voltage regulator. It typically comes in a 20-pin TSSOP (Thin Shrink Small Outline Package) with an exposed pad for enhanced thermal performance. The main functions of the LM5576 include providing a regulated output voltage from a higher input voltage. It is capable of delivering up to 3A of output current with high efficiency and low output voltage ripple.
Key features of the LM5576MH include wide input voltage range, adjustable output voltage, thermal shutdown, and current limit protection. It also incorporates an internal compensation network, which simplifies the design process by reducing the number of external components required.
Please refer to the specific datasheet for detailed pin configuration and functions as it provides comprehensive information on each pin's role in the device operation.

Manufacturer

The LM5576MH is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits. Headquartered in Dallas, Texas, TI is one of the top semiconductor companies in the world and serves a wide range of industries including automotive, industrial, personal electronics, and communications equipment. The company is known for its focus on innovation and development of analog and embedded processing products.

Application

The LM5576MH is a high-voltage switching regulator designed for applications requiring efficient step-down voltage conversion. It's commonly used in industrial systems, automotive electronics, telecommunications, and distributed power systems. The device is suitable for use in scenarios where high input voltages up to 75V are present, such as battery-powered equipment, motor drives, and power management systems. Its wide input voltage range and high efficiency make it ideal for applications needing reliable and compact power supply solutions.

Equivalent

The LM5576MH is a buck regulator IC. Equivalent products may include the LM5576 from different packages or similar buck regulators from other manufacturers with similar specifications, such as the LM2678 from Texas Instruments, or the LT1976 from Analog Devices. Ensure compatibility in terms of input voltage range, output current, and switching frequency when considering equivalents. Always compare datasheets for precise matching of features and performance.

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