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LM25085QMY
+Lista de MateriaisSwitching Controllers
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FabricanteTexas Instruments
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Peça do Fabricante #LM25085QMY
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Especificações
| Atributo | Valor |
Visão Geral
Description
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
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
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
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.