L4985ATR

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L4985ATR

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  • Nhà sản xuấtSTMicroelectronics

  • Ông. Phần #L4985ATR

  • Có sẵn22367

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Thông số kỹ thuật

thuộc tính Giá trị
PartStatus Active
Mode Continuous Conduction (CCM)
Frequency-Switching 65kHz
Current-Startup 400 µA
Voltage-Supply 10V ~ 24.5V
OperatingTemperature -40°C ~ 150°C (TJ)
MountingType Surface Mount
Package/Case 8-SOIC (0.154", 3.90mm Width)
SupplierDevicePackage 8-SO

Tổng quan

Description

The L4985ATR is a power management integrated circuit (PMIC) designed by STMicroelectronics, typically used in various electronic applications for efficient energy utilization. It is a part of the L4985A series, which is known for its high-performance voltage regulation capabilities. This device is primarily used in switched-mode power supplies (SMPS) and provides an ideal solution for managing power in complex electronic systems.
Key features of the L4985ATR include its ability to deliver high efficiency across a wide range of loads, with minimal external components required, thus simplifying the overall design and reducing system costs. It supports a wide input voltage range and offers protection features such as overcurrent, overvoltage, and thermal shutdown, ensuring robust and reliable operation in various environments.
Additionally, the L4985ATR is valued for its compact size, making it suitable for space-constrained applications. Its versatility and reliability make it a popular choice among engineers for applications in consumer electronics, telecommunications, and industrial automation.

Equivalent

The L4985ATR is a step-down switching regulator from STMicroelectronics. Equivalent products could include similar buck converters with comparable specifications. Potential alternatives are the LM2576 from Texas Instruments, the MC34063 from ON Semiconductor, and the MP1584 from MPS. It is essential to compare the specifications like input voltage range, output current, and switching frequency to ensure compatibility with your application.

Features

The L4985ATR is a versatile and efficient DC-DC buck converter designed for various power management applications. It operates with an input voltage range of 4.5V to 36V and can deliver an adjustable output voltage. Key features include:
1. High Efficiency: Designed to minimize power loss, offering high efficiency over a wide load range.
2. Switching Frequency: It supports a fixed switching frequency, which helps in optimizing the performance for various applications.
3. Current Mode Control: Provides stability and fast transient response, making it reliable under different operating conditions.
4. Internal Compensation: Simplifies the design process and reduces external components, saving board space.
5. Soft Start Function: Prevents inrush current during startup, which helps in protecting the circuitry.
6. Thermal Shutdown Protection: Ensures the device is protected from overheating by shutting down when the temperature exceeds safe limits.
7. Overcurrent Protection: Safeguards the converter and the load against excessive currents.
8. Compact Package: Available in a small, surface-mount package ideal for space-constrained applications.
Overall, the L4985ATR is a robust solution for efficient and reliable power regulation in a variety of electronic devices.

Pinout

The L4985ATR is a switch-mode power supply controller from STMicroelectronics, typically used in DC-DC conversion applications. It is generally available in a multi-pin package, such as the SO-20, which contains 20 pins.
Key functions of the L4985ATR include:
1. PWM Control: Provides pulse-width modulation for efficient power conversion.
2. Current and Voltage Regulation: Maintains stable output by regulating input current and output voltage.
3. Soft Start: Limits inrush current during power-up, enhancing reliability.
4. Overcurrent Protection: Protects the circuit by shutting down or limiting current during overload conditions.
5. Synchronization: Allows the controller to be synchronized with an external clock.
6. Thermal Shutdown: Over-temperature protection to prevent overheating.
These functions make it suitable for various power management tasks, ensuring efficient and reliable operation in electronic systems. Check the datasheet for specifics about individual pin assignments and additional features.

Manufacturer

The L4985ATR is manufactured by STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a wide range of semiconductor products. These products are used in various applications, including automotive, industrial, personal electronics, communications equipment, and more. The company is known for its innovation in semiconductor technologies and its ability to provide comprehensive solutions to its customers across different industries. STMicroelectronics operates in a highly competitive market and is recognized for its expertise in developing advanced technologies that drive the electronics industry forward.

Application

The L4985ATR is a step-down switching voltage regulator IC designed for various power management applications. Key application areas include:
1. Consumer Electronics: Provides stable power supply for devices like TVs, set-top boxes, and home audio systems.
2. Industrial Equipment: Used in control systems and instrumentation requiring reliable voltage regulation.
3. Telecommunications: Powers networking equipment and communication devices.
4. Automotive Systems: Supplies power in automotive electronics where a stable voltage is crucial.
5. Computer Peripherals: Supports power management in printers, scanners, and other peripheral devices.
Its efficiency, compactness, and reliability make it suitable for these and other applications requiring efficient voltage conversion and regulation.

Package

The L4985ATR is housed in a PowerSO-20 package. This package is designed for power applications and provides efficient thermal performance and reliability.

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