LM25085QMY

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LM25085QMY

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Switching Controllers

  • FabricanteTexas Instruments

  • Peça do Fabricante #LM25085QMY

  • Em Estoque13023

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Description

The LM25085QMY is a high-performance, low-side switching regulator controller designed by Texas Instruments. It is part of the Simple Switcher series, intended for use in step-down (buck) converter applications. The device is optimized for applications requiring high efficiency and small footprint, making it suitable for automotive, industrial, and telecommunications systems.
Key features of the LM25085QMY include a wide input voltage range, typically from 4.5V to 42V, allowing it to handle various power sources. It supports adjustable output voltage and offers a low standby current for energy-efficient operation. The controller utilizes a constant on-time (COT) control scheme, providing fast transient response and easy loop compensation.
Additional features include programmable switching frequency, cycle-by-cycle current limiting, and thermal shutdown protection, which enhance the reliability and safety of the device. The LM25085QMY is available in a thermally-enhanced, small-outline package, making it suitable for space-constrained applications. Its robust design and versatility make it a popular choice for designers looking to implement efficient and compact DC-DC buck converters.

Equivalent

The LM25085QMY is a low-side controller for step-down (buck) converters. Equivalent products include:
1. Texas Instruments LM3477 - A versatile buck controller.
2. ON Semiconductor NCP3063 - A high-efficiency boost/buck converter.
3. Microchip MCP16301 - A high-efficiency buck regulator.
4. Analog Devices LT1374 - A buck controller with a wide input voltage range.
These alternatives may vary in specifications, so it's important to check compatibility with your specific application.

Features

The LM25085QMY is a high-performance switching regulator from Texas Instruments designed for automotive applications. Key features include:
1. Wide Input Voltage Range: It supports an input voltage range from 4.5V to 42V, making it suitable for various automotive power systems.
2. Adjustable Output Voltage: The device provides a flexible output voltage range, allowing customization for different applications.
3. High Efficiency: The regulator is optimized for high efficiency, helping to reduce power loss and heat generation.
4. Integrated Switch: It includes an integrated N-channel MOSFET switch, simplifying design and enhancing performance.
5. Emissions Compliance: The LM25085QMY adheres to automotive EMI requirements.
6. Protection Features: It offers protection mechanisms such as thermal shutdown, current limit protection, and under-voltage lockout.
7. Frequency Adjustable: The switching frequency can be adjusted, aiding in optimization for specific applications.
8. Package: Available in a thermally enhanced package, which helps manage heat dissipation effectively.
9. AEC-Q100 Qualified: This qualification ensures reliability and robustness for automotive environments.
These features make the LM25085QMY a reliable choice for powering automotive electronic systems.

Pinout

The LM25085QMY is a buck regulator IC designed for high-efficiency current regulation applications. It is part of Texas Instruments' Simple Switcher series. The device comes in a 10-pin HVSSOP (PowerPAD™) package, providing thermal efficiency and compactness.
Key functions and pin assignments include:
1. SW (Pin 1): Switch node, connects to the inductor.
2. DIS (Pin 2): Disable input, used to shut down the regulator.
3. FB (Pin 3): Feedback, connected to the output voltage divider for voltage regulation.
4. ISEN (Pin 4): Current sense input, monitors the inductor current.
5. RT (Pin 5): Sets the off-time via an external resistor.
6. GND (Pin 6): Ground reference for the IC.
7. VIN (Pin 7): Input voltage supply, powers the device.
8. BST (Pin 8): Bootstrap capacitor connection for driving the high-side FET.
9. SS (Pin 9): Soft-start control, allows controlled ramp-up of output voltage.
10. VCC (Pin 10): Internal voltage supply, typically bypassed with an external capacitor.
The LM25085QMY supports applications requiring efficient power conversion with minimal external components.

Manufacturer

The LM25085QMY is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic components, including integrated circuits (ICs) for various applications. TI is known for its innovations in analog chips and embedded processors, which are used in various industries such as automotive, industrial, electronics, communications, and consumer electronics. The company focuses on developing technology that helps its customers create highly efficient and performant electronic devices.

Application

The LM25085QMY is a high-efficiency step-down switching regulator commonly used in automotive applications. It is well-suited for automotive power management systems, providing efficient conversion of higher voltage levels to lower ones required by various electronic components. This component can be used in battery-powered systems, LED drivers, and power supplies for infotainment systems. Additionally, it serves applications requiring high reliability and robust performance under varying input conditions, common in automotive environments. Its key features include a wide input voltage range and low quiescent current, making it ideal for use in both start/stop and continuous operation scenarios in vehicles.

Package

The LM25085QMY is typically available in a 10-pin MSOP-PowerPAD package. This package type is designed to enhance thermal performance by using an exposed pad for improved heat dissipation.

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