LM5118MH

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LM5118MH

+Nomenclature

Switching Controllers

  • FabricantTexas Instruments

  • Pièce fabricant #LM5118MH

  • En stock28508

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Présentation

Description

The LM5118MH is a versatile, dual-mode DC-DC controller from Texas Instruments designed for both buck and boost applications. It is capable of handling wide input voltage ranges from 3V to 75V, making it suitable for various industrial and automotive applications. The device provides high efficiency and flexibility through its synchronous rectification and adjustable switching frequency, which can be set between 50 kHz and 500 kHz.
Key features of the LM5118MH include a robust control scheme that allows seamless transition between buck and boost modes, ensuring consistent output across varying input conditions. It also offers an adjustable soft-start feature, current-mode control for enhanced transient response, and integrated protections such as undervoltage lockout, current limit, and thermal shutdown.
The LM5118MH comes in a thermally efficient HTSSOP-20 package, making it suitable for space-constrained designs. Its combination of wide input range, high efficiency, and comprehensive protection features makes the LM5118MH a reliable choice for power management in demanding environments.

Equivalent

The LM5118MH is a wide input range Buck-Boost controller. Equivalent products from other manufacturers might include:
1. LTC3780 from Analog Devices - a high-efficiency synchronous buck-boost DC/DC controller.
2. TPS63070 from Texas Instruments - a high-current, synchronous buck-boost converter.
3. MAX15026 from Maxim Integrated - a buck-boost DC-DC converter controller.
These alternatives may have differing specifications, so ensure to check the datasheets for compatibility with your application.

Features

The LM5118MH is a versatile wide voltage range buck-boost controller designed for efficient power management in both buck and boost configurations. Key features include:
1. Wide Input Voltage Range: It supports 3V to 75V, making it suitable for diverse applications.
2. Output Voltage Flexibility: The device can deliver an output voltage range from 1.5V to 50V.
3. High Efficiency: Achieves efficiency up to 95% due to synchronous rectification and optimized switching.
4. Dual Mode Operation: Seamlessly transitions between buck and boost modes based on input conditions.
5. Programmable Switching Frequency: Allows selection from 50 kHz to 500 kHz for design flexibility.
6. Robust Protection Features: Includes over-voltage protection, cycle-by-cycle current limit, and thermal shutdown.
7. Soft-Start Capability: Provides controlled startup to prevent inrush current.
8. Enable/Shutdown Function: Facilitates low-power standby mode.
9. Current Mode Control: Ensures stable operation across all conditions.
10. Thermal Performance: Housed in a thermally enhanced TSSOP package for efficient heat dissipation.
These features make the LM5118MH ideal for automotive, industrial, and other high-reliability power supply applications.

Pinout

The LM5118MH is a versatile, high-voltage buck-boost controller integrated circuit. It is designed to regulate output voltage from either a higher or lower input voltage source and is particularly suitable for automotive and industrial power supplies where wide input voltage ranges are common.
This IC is provided in a 20-pin thermally enhanced TSSOP (Thin Shrink Small Outline Package), which is denoted by the suffix "MH" in its part number. Here's a brief breakdown of its function:
- Pin Count: 20 pins
- Functionality: The LM5118MH allows for both step-down (buck) and step-up (boost) voltage regulation, combining the features of both in a single converter. It features a wide input voltage range, high efficiency, and can deliver output power in automotive systems, battery-operated devices, and other applications requiring efficient power conversion under varying conditions.
The LM5118MH includes essential functions such as current mode control, programmable switching frequency, and a robust set of protections for over-voltage, under-voltage, and thermal conditions, ensuring reliable operation across various scenarios.

Manufacturer

The LM5118MH is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide range of analog and embedded processing chips. The company is known for its innovations in the electronics industry, particularly in the development of integrated circuits for various applications, including automotive, industrial, personal electronics, and communications equipment. TI offers a comprehensive portfolio of products and solutions, serving a diverse range of industries by providing crucial components for electronic systems.

Application

The LM5118MH is a versatile buck-boost controller used in various power management applications. It is ideal for systems requiring a wide input voltage range, such as automotive power supplies, industrial voltage regulators, and telecom power systems. The controller supports battery-powered devices by accommodating voltage variations and extending battery life. It is also used in renewable energy systems, where it efficiently manages varying input conditions. Its ability to deliver a stable output from fluctuating inputs makes it suitable for LED drivers and other applications where consistent power delivery is crucial. The LM5118MH's robustness and efficiency make it a popular choice for developers designing reliable power supply solutions.

Package

The LM5118MH is a buck-boost controller from Texas Instruments, and it is typically available in an HTSSOP (Heat-Sink Thin Shrink Small Outline Package) with 20 pins. The HTSSOP package is designed for applications requiring high power dissipation and enhanced thermal performance.

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