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LM5118MH

Name: LM5118MH
Rating: 4.7 (12 reviews)

Switching Controllers

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概述

Description

The LM5118MH is a high-performance, synchronous buck controller from Texas Instruments designed for a wide range of applications, including industrial, telecommunications, and automotive systems. It features a wide input voltage range of 4.5V to 60V and can deliver high output currents, making it suitable for powering various devices.
Key features include an adjustable output voltage, programmable switching frequency, and integrated soft-start to minimize inrush current. The LM5118MH employs advanced control techniques for improved transient response and efficiency, including current mode control and adaptive dead-time management.
It also incorporates built-in protections like overcurrent, overvoltage, and thermal shutdown, ensuring reliable operation. The device is available in a thermally enhanced package, which aids in thermal management during high-load scenarios. Overall, the LM5118MH is an effective solution for designing compact and efficient power supplies in demanding environments.

Features

The LM5118MH is a high-performance synchronous buck regulator designed for point-of-load applications. Key features include:
1. Wide Input Voltage Range: Operates from 4.5V to 60V, accommodating various power sources.
2. Adjustable Output Voltage: Output voltage can be set from 0.8V to 15V with an external resistor divider.
3. High Efficiency: Achieves efficiencies up to 95% at full load, minimizing thermal losses.
4. Current Mode Control: Provides excellent line and load regulation, with a fast transient response.
5. Integrated High and Low Side MOSFETs: Reduces component count and board space.
6. Frequency Selection: Adjustable switching frequency from 100 kHz to 1 MHz to optimize performance and minimize noise.
7. Soft-Start Function: Reduces inrush current during startup.
8. Protection Features: Includes over-voltage protection (OVP), under-voltage lockout (UVLO), and thermal shutdown.
These features make the LM5118MH suitable for applications in telecommunications, industrial systems, and automotive environments.

Package

The LM5118MH is packaged in a 8-pin HTSSOP (Heat Sink Thin Shrink Small Outline Package), which offers a compact footprint and improved thermal performance.

Pinout

The LM5118MH is a high-performance dual synchronous buck controller designed for efficient power management in various applications. It features a total of 16 pins.
Pin Count and Functions:
1. VIN - Input voltage supply.
2. GND - Ground reference.
3. COMP - Compensation network connection.
4. FB - Feedback voltage input.
5. SW - Switch node connection.
6. ISEN+ - Positive current sense input.
7. ISEN- - Negative current sense input.
8. BOOT - Bootstrap capacitor connection for high-side gate drive.
9. PHASE - High-side switch node.
10. DRVHG - High-side gate driver output.
11. DRVLG - Low-side gate driver output.
12. CSN - Current sense negative input.
13. CSP - Current sense positive input.
14. RT - Timing resistor connection for frequency setting.
15. SYNC - Synchronization input/output.
16. SS/TR - Soft-start and tracking voltage input.
This controller is suitable for a variety of applications, including power supplies for CPUs, FPGAs, and other high-performance devices.

Manufacturer

The LM5118MH is manufactured by Texas Instruments (TI), a leading global semiconductor company. Texas Instruments designs and produces a wide range of analog and digital electronic components, including integrated circuits (ICs), microcontrollers, and processors. The company is well-known for its innovations in analog technology, embedded processing, and various applications in industries such as automotive, industrial, communications, and consumer electronics. Texas Instruments is headquartered in Dallas, Texas, and has a strong presence in the semiconductor market, focusing on providing solutions that enhance performance and energy efficiency in electronic systems.

Application

The LM5118MH is a high-voltage, high-frequency synchronous buck controller primarily used in power management applications. Its key application areas include industrial power supplies, data centers, telecommunications equipment, and automotive systems. It efficiently converts high input voltages to lower output voltages, making it suitable for DC-DC converters in various electronic devices, including servers, routers, and electric vehicles.

Equivalent

Equivalent products to the LM5118MH chip include the TPS54060, LM5117, and LT1763. These alternatives provide similar buck converter functionality, with variations in specifications such as input voltage range, output current, and efficiency. Always verify compatibility with your specific application requirements before substitution.