LM3481MMX

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LM3481MMX

Switching Controllers

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  • Mfr. Partie #LM3481MMX
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Spécifications

Vue d'ensemble

Description

The LM3481MMX is a high-performance voltage regulator designed for various power management applications. It features a step-down (buck) topology, allowing it to efficiently convert a higher input voltage into a lower output voltage, ideal for powering devices like microcontrollers and sensors. With a wide input voltage range, typically from 4.5V to 40V, the LM3481MMX is versatile and suitable for automotive, industrial, and consumer electronics.
Key features include a built-in switch, adjustable output voltage, and a high switching frequency, which enables smaller external components and reduced PCB space. It also incorporates protection features such as thermal shutdown and overcurrent protection, ensuring reliable operation under different load conditions.
The device comes in a compact surface-mount package, making it easy to integrate into various designs. Overall, the LM3481MMX is a robust choice for efficient power regulation in demanding applications.

Features

The LM3481MMX is a high-performance, voltage-mode, pulse-width modulation (PWM) controller designed for use in DC-DC converters. Key features include:
1. Wide Input Voltage Range: Operates from 4.5V to 40V, accommodating various applications.
2. Adjustable Output Voltage: Supports output voltage programming through external resistors.
3. High Efficiency: Designed for minimal power loss and improved thermal performance.
4. Integrated Soft-Start: Reduces inrush current during startup to enhance reliability.
5. Current Limiting: Provides built-in current limit protection to prevent damage.
6. Adjustable Switching Frequency: Capable of operating at frequencies up to 1 MHz, allowing for compact design.
7. External Compensation: Enables design flexibility for stability and transient response optimization.
8. Thermal Shutdown: Provides protection against overheating.
9. TTL Logic Compatibility: Features a shutdown pin for easy interfacing with digital logic.
These features make the LM3481MMX suitable for various applications, including power supplies for telecommunications and industrial systems.

Package

The LM3481MMX is packaged in a 5-pin SOT-23 format. This small, surface-mount package is designed for efficiency in space-constrained applications.

Pinout

The LM3481MMX is a voltage regulator designed for use in various power management applications. It has a pin count of 8. The primary functions of its pins are as follows:
1. VIN (Pin 1): Input voltage.
2. GND (Pin 2): Ground reference.
3. SW (Pin 3): Switch node for connecting to the inductor.
4. COMP (Pin 4): Compensation network connection for stability.
5. FB (Pin 5): Feedback voltage input for regulation.
6. SS (Pin 6): Soft-start control to limit inrush current.
7. VCC (Pin 7): Power supply for the internal circuitry.
8. RT (Pin 8): Timing resistor connection for setting the switching frequency.
The LM3481MMX is typically used in DC-DC converters and other power supply circuits.

Manufacturer

The LM3481MMX is manufactured by Texas Instruments (TI), a leading global semiconductor company. Texas Instruments specializes in the design and production of a wide range of electronic components, including integrated circuits (ICs), microcontrollers, and analog devices. Founded in 1930, the company is known for its innovations in the semiconductor industry, particularly in analog and embedded processing technologies. TI serves various sectors, including automotive, industrial, communications, and consumer electronics, providing solutions that enhance performance and efficiency in electronic systems.

Application

The LM3481MMX is a versatile voltage regulator primarily used in applications such as DC-DC converters, power management for automotive systems, battery-powered devices, and LED drivers. It's suitable for applications requiring high efficiency and low power consumption, particularly in portable electronics, industrial equipment, and communications infrastructure. Its ability to operate in a variety of configurations makes it ideal for a wide range of power supply designs.

Equivalent

The LM3481MMX is a voltage regulator and can be replaced by several equivalent products, including the LM3481M, LT1375, and TPS54610. These alternatives provide similar functionalities in terms of voltage regulation and efficiency. Always verify specifications and compatibility for your specific application before substitution.

Expédition

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Référence des frais d'expédition (DHL/FedEx):

DHL: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 2 à 5 jours ouvrables.

FedEx: Les frais d'expédition varient de 25 à 40 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

UPS: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

TNT: Les frais d'expédition varient de 25 à 65 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

EMS: Les frais d'expédition varient de 30 à 50 $ (0,5 kg), avec un délai de livraison estimé de 7 à 15 jours ouvrables.

Courrier aérien enregistré: Le coût d'expédition est de 2 à 4 $ (0,1 kg), avec un délai de livraison estimé de 5 à 20 jours ouvrables.

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