LM2591HVSX-5.0

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LM2591HVSX-5.0

IC REG BUCK 5V 1A TO263

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  • Mfr. Partie #LM2591HVSX-5.0
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  • En stock9871

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Spécifications

Series SIMPLE SWITCHER®
Part Status Obsolete
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Fixed
Number of Outputs 1
Voltage - Input (Min) 4.5V
Voltage - Input (Max) 60V
Voltage - Output (Min/Fixed) 5V
Current - Output 1A
Frequency - Switching 150kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package TO-263 (DDPAK-5)
Base Product Number LM2591

Vue d'ensemble

Description

The LM2591HVSX-5.0 is a high-voltage, step-down (buck) voltage regulator designed for efficient power conversion. It is part of the LM2591 series, which are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation.
Key features include:
1. Input Voltage Range: The "HVS" indicates high-voltage specifications, allowing input voltages up to 60V.
2. Fixed Output Voltage: The "5.0" in the model number denotes a fixed 5V output.
3. Efficiency: It boasts high efficiency, which reduces heat dissipation and improves performance.
4. Frequency: Operates at a switching frequency of 150 kHz, enabling smaller filter components.
5. Protection: Built-in features like thermal shutdown and current limit protection ensure reliable operation.
6. Package: Typically offered in a TO-263 surface-mount package.
These characteristics make the LM2591HVSX-5.0 suitable for a variety of applications, including power management in telecommunications, automotive, and industrial systems. Its robust design and wide input range make it a versatile choice for converting higher DC voltages to a stable 5V output.

Features

The LM2591HVSX-5.0 is a high-efficiency, simple-to-use, step-down (buck) voltage regulator designed for a fixed 5.0V output. Key features include:
1. Wide Input Voltage Range: Supports 4.5V to 60V, making it suitable for a variety of applications.
2. Output Current: Can provide up to 3A of load current.
3. Efficiency: High efficiency up to 90%, reducing power loss and thermal concerns.
4. Fixed Output Voltage: Delivers a constant 5.0V output.
5. Thermal Shutdown: Protects the device from overheating.
6. Current Limit Protection: Prevents damage due to overcurrent conditions.
7. Low Component Count: Simplifies the design with minimal external components required.
8. On/Off Control: Includes an ON/OFF input for controlling the regulator’s operation.
9. TO-263 Surface-Mount Package: Offers a suitable form factor for board space savings.
These features make the LM2591HVSX-5.0 ideal for power management in applications such as battery chargers, distributed power systems, and embedded systems requiring efficient voltage regulation.

Package

The LM2591HVSX-5.0 is a high voltage version of the LM2591 series, designed as a step-down voltage regulator. It comes in a surface-mount package type known as TO-263 (also called D2PAK). This package is designed for high-power applications, providing efficient heat dissipation and suitable for automated assembly processes.

Pinout

The LM2591HVSX-5.0 is a high-efficiency buck regulator from Texas Instruments. It is designed for step-down voltage conversion and comes with a fixed output voltage of 5.0 volts. The device typically comes in a 5-pin TO-263 package.
Here is a brief overview of the pin functions:
1. Vin (Input Voltage): This pin receives the input voltage, which can range from 4.5V to 60V for the "HV" (High Voltage) variant.
2. GND (Ground): This pin is connected to the ground of the circuit.
3. Output: This pin outputs the regulated 5.0V to the load.
4. Feedback (FB): Although the LM2591HVSX-5.0 is a fixed output voltage version and generally does not require a feedback pin, the pin is present for reference in the adjustable version of the LM2591.
5. ON/OFF (Enable): This pin is used to enable or disable the regulator. Pulling this pin low will disable the output, while pulling it high will enable it.
The LM2591HVSX-5.0 is commonly used for efficient power management in various electronic applications.

Manufacturer

The LM2591HVSX-5.0 is manufactured by Texas Instruments, an American technology company. Texas Instruments is a major player in the semiconductor industry, known for designing and manufacturing a wide range of electronic products, including integrated circuits and embedded processors. They serve various markets, including industrial, automotive, personal electronics, and communications.

Application

The LM2591HVSX-5.0 is a high-voltage step-down voltage regulator suitable for various applications, including power management in industrial equipment, battery-powered devices, automotive systems, and communication equipment. It is used where efficient power conversion from a higher voltage to a stable 5V output is required, making it ideal for microcontroller-based systems, distributed power systems, and as a point-of-load regulator. Its robust design and high-efficiency operation also make it suitable for consumer electronics and instrumentation applications.

Equivalent

The LM2591HVSX-5.0 is a high-voltage, step-down voltage regulator. Equivalent products would be those that provide similar functionality, such as the TI LM2596HV-5.0, the LM2576HVS-5.0, and the LT1765HS-5.0 from Analog Devices. These alternatives should be reviewed for compatibility in terms of input voltage range, output voltage, current capability, and package type to ensure they meet your specific requirements.

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