L4975A

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L4975A

+Nomenclature

IC REG BUCK ADJ 5A 15MULTIWATT

  • FabricantSemi - conducteurs optiques

  • Pièce fabricant #L4975A

  • En stock8205

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Spécifications

Attribut Valeur
PartStatus Obsolete
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 15V
Voltage-Input(Max) 50V
Voltage-Output(Min/Fixed) 5.1V
Voltage-Output(Max) 40V
Current-Output 5A
Frequency-Switching 200kHz ~ 500kHz
SynchronousRectifier No
OperatingTemperature -40°C ~ 150°C (TJ)
MountingType Through Hole
Package/Case Multiwatt-15 (Vertical, Bent and Staggered Leads)
SupplierDevicePackage 15-Multiwatt
BaseProductNumber L4975

Présentation

Description

"L4975A" could refer to a model number, part number, or code related to a specific product, device, or component. Without specific context, it is challenging to provide an exact introduction. If L4975A is a model number associated with a particular technology or device, it typically involves technical specifications, intended usage, and possibly installation or operation guidelines.
For instance, if L4975A is related to electronics, it might be a part of a larger system, such as a power supply module, motor driver, or communication component. In such cases, the introduction would cover its primary function, key technical parameters (like voltage, current, power ratings, etc.), compatible systems, and any notable features that make it suitable for certain applications.
To provide a more precise and informative introduction, additional details or context about what L4975A specifically refers to would be necessary. If you have more context or a specific domain in mind, feel free to share for a more tailored response.

Equivalent

The L4975A is a step-down (buck) switching voltage regulator. Equivalent products include the LM2596 from Texas Instruments, MC34063 from ON Semiconductor, and the MP1584 from Monolithic Power Systems. These components offer similar functionality, providing efficient voltage conversion and regulation in power supply applications. Note that while these chips are similar, differences may exist in their specifications, such as input voltage range, output current, and efficiency, so they should be evaluated to ensure compatibility with your specific requirements.

Features

The L4975A is a step-down monolithic power switching regulator specifically designed for applications requiring efficient voltage conversion. Key features include:
1. Output Current: Capable of delivering up to 5A of output current.
2. Input Voltage: Operates with a wide input voltage range from 8V to 55V.
3. Output Voltage: Adjustable output voltage, typically from 5.1V to 40V.
4. Efficiency: High efficiency due to its step-down nature, minimizing power loss.
5. Internal Oscillator: Features a built-in oscillator running at 100 kHz, which helps simplify external component requirements.
6. Thermal Protection: Includes thermal shutdown to prevent damage from overheating.
7. Current Limitation: Provides current limiting to protect against short-circuit conditions.
8. Soft Start: Equipped with a soft-start feature to reduce inrush current during startup.
9. Compact Package: Available in a compact, easy-to-use package, suitable for various applications.
These features make the L4975A an excellent choice for applications needing reliable and efficient DC-DC conversion.

Pinout

The L4975A is a step-down (buck) voltage regulator IC manufactured by STMicroelectronics. It typically comes in a 5-pin TO-220 package. Here is a concise description of its pin functions:
1. Pin 1 (VCC): This is the input voltage pin where the supply voltage is provided to the IC.
2. Pin 2 (OUTPUT): This pin is the output where the regulated voltage is available. It provides the step-down voltage to power the load.
3. Pin 3 (GND): This is the ground pin used as the reference for the input and output voltages.
4. Pin 4 (SYNC): This is the synchronization pin used to synchronize the internal oscillator with an external clock. If not used, it can be connected to ground or left open.
5. Pin 5 (COMP): This pin is used for compensation. It allows the user to stabilize the output by connecting a network of resistors and capacitors to this pin for loop compensation.
The L4975A is designed to provide efficient power conversion with features like current limiting, thermal shutdown, and high switching frequency for compact applications.

Manufacturer

The L4975A is manufactured by STMicroelectronics. STMicroelectronics is a multinational electronics and semiconductor manufacturer. The company is known for designing and producing a wide range of semiconductor devices, including integrated circuits, discrete devices, microcontrollers, and sensors. Their products are used in various applications spanning automotive, industrial, personal electronics, computer peripherals, and telecommunications sectors. STMicroelectronics is recognized for its focus on innovation and providing solutions that address the needs of modern technology and energy efficiency.

Application

The L4975A is a monolithic power switching regulator designed for various applications where efficient voltage conversion is required. Key application areas include:
1. Power Supply Modules: It is used in the design of DC-DC converters for efficient power management.
2. Telecommunications: Supports stable power sourcing in telecommunication devices and systems.
3. Automotive Electronics: Suitable for automotive applications, providing regulated power to electronic control units.
4. Industrial Equipment: Used in industrial control systems for stable power regulation.
5. Consumer Electronics: Powers a variety of consumer devices needing reliable voltage regulation.
Its versatility in handling different input and output voltages makes it widely applicable across multiple domains.

Package

The L4975A is typically available in a multiwatt15 package, which is a through-hole package type designed for power applications.