LM5085MY

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Switching Controllers

  • FabricanteTexas Instruments

  • Peça do Fabricante #LM5085MY

  • Em Estoque10933

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Description

The LM5085MY is a high-performance, step-down switching regulator designed for efficient power management in various applications. It integrates a N-Channel MOSFET driver, making it suitable for driving large inductive loads with high efficiency. The regulator operates over a wide input voltage range, typically from 4.5V to 75V, accommodating various power supply conditions.
One of the key features of the LM5085MY is its constant on-time control scheme, which provides fast transient response and simplifies loop compensation. This makes it particularly well-suited for applications requiring rapid load changes. The device also includes features such as over-current protection, thermal shutdown, and an adjustable output voltage, enhancing its reliability and versatility.
This regulator is commonly used in automotive, industrial, and telecom applications due to its robust design and ability to handle high input voltages and currents. Its compact size and efficiency make it ideal for space-constrained environments where performance and reliability are critical.

Equivalent

The LM5085MY is a buck regulator controller. Equivalent products that you might consider include:
1. Texas Instruments LM3485 - A similar buck controller with comparable features.
2. ON Semiconductor NCP3063 - Offers similar functionality and application.
3. Maxim Integrated MAX5035 - Another alternative with buck regulation capabilities.
4. STMicroelectronics L4971 - A step-down switching regulator controller.
Always check the specific requirements and specifications to ensure compatibility with your application.

Features

The LM5085MY is a high-efficiency, step-down switching regulator designed for a wide range of applications. Key features include:
1. Input Voltage Range: It supports a wide input voltage range, typically from 5.5V to 75V, making it suitable for various applications.
2. Output Current: The device can deliver up to 1.5A of continuous output current.
3. Efficiency: The regulator is designed to provide high efficiency, which is crucial for minimizing power loss and heat generation.
4. Adjustable Frequency: It offers an adjustable switching frequency, typically in the range of 50kHz to 1MHz, allowing for optimization of efficiency and size.
5. Thermal Shutdown: Includes an over-temperature protection mechanism to prevent damage from overheating.
6. Cycle-by-Cycle Current Limiting: Ensures protection against overcurrent conditions.
7. Soft-Start Capability: Features a programmable soft-start function to limit inrush current during startup.
8. Low Shutdown Current: The device has a low quiescent current in shutdown mode, conserving power when not in use.
These features make the LM5085MY suitable for power supply designs in industrial, automotive, and telecom applications.

Pinout

The LM5085MY is a high-efficiency switching regulator controller used for low-side N-channel MOSFET buck converters. It typically comes in a 10-pin MSOP (Mini Small Outline Package). Here's a concise breakdown of its pin functions:
1. VCC: Supply voltage for the internal circuitry.
2. SD: Shutdown pin which can be used to enable or disable the regulator.
3. UVLO: Allows adjustment of the under-voltage lockout threshold.
4. RAMP: Connects to a capacitor to set the switching frequency.
5. CS: Current sense input for current-mode control.
6. FB: Feedback pin for output voltage regulation.
7. COMP: Compensation pin for stabilizing the control loop.
8. SLOPE: Allows adjustment of the slope compensation to prevent subharmonic oscillations.
9. GATE: Drives the gate of the external N-channel MOSFET.
10. GND: Ground connection for the device.
These functions facilitate efficient voltage regulation and conversion in various applications, especially where a compact footprint is essential.

Manufacturer

The LM5085MY is manufactured by Texas Instruments. Texas Instruments is an American technology company that designs and manufactures semiconductors and various integrated circuits. These products are widely used in electronic devices across various industries, including consumer electronics, automotive, communications, industrial, and enterprise systems. Texas Instruments is well-known for its innovation in analog and embedded processing technologies, contributing to advancements in energy efficiency and performance in electronic systems.

Application

The LM5085MY is a step-down (buck) switching regulator designed for use in applications requiring efficient power conversion from higher voltage sources. Key application areas include:
1. Telecommunications: Powering equipment from -48V telecom power supplies.
2. Industrial Systems: Providing stable voltage in industrial automation and control systems.
3. Automotive: Used in infotainment and various electronics systems, handling the voltage variations found in vehicles.
4. Distributed Power Systems: Supplies power in multi-voltage and distributed power architectures.
5. Consumer Electronics: Powers devices requiring efficient conversion from high-voltage sources to lower voltage levels.
The LM5085MY is valued for its wide input voltage range and high efficiency, making it suitable for robust and reliable power supply designs.

Package

The LM5085MY is a Texas Instruments integrated circuit typically provided in an 8-pin MSOP (Mini Small Outline Package) PowerPAD package. This type of packaging is designed for efficient power dissipation and compactness, making it suitable for various power management applications.

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