LMR51440SDRRR

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LMR51440SDRRR

IC REG BUCK ADJ 4A 12WSON

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  • Mfr. Partie #LMR51440SDRRR
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Spécifications

Part Status Active
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 4V
Voltage - Input (Max) 36V
Voltage - Output (Min/Fixed) 0.8V
Voltage - Output (Max) 28V
Current - Output 4A
Frequency - Switching 200kHz ~ 1.1MHz
Synchronous Rectifier Yes
Operating Temperature -40°C ~ 150°C (TJ)
Mounting Type Surface Mount
Package / Case 12-WFDFN Exposed Pad
Supplier Device Package 12-WSON (3x3)
Base Product Number LMR51440

Vue d'ensemble

Description

The LMR51440SDRRR is a high-performance, step-down (buck) voltage regulator designed for efficient power conversion in various applications. It features a wide input voltage range, typically from 4.5V to 60V, making it suitable for battery-operated devices and industrial applications. This regulator can deliver an output current of up to 4A, with an adjustable output voltage down to 0.8V.
Key features include high efficiency, which reduces heat generation and improves overall system reliability, as well as built-in protection mechanisms such as thermal shutdown and current limiting. The LMR51440SDRRR is housed in a compact package, facilitating easy integration into space-constrained designs.
Additionally, it supports a variety of operating modes, including pulse-width modulation (PWM) and pulse-frequency modulation (PFM), allowing for flexibility in performance optimization based on specific application needs. Overall, the LMR51440SDRRR is ideal for applications in telecommunications, automotive, and consumer electronics where efficient and reliable power management is critical.

Features

The LMR51440SDRRR is a high-performance voltage regulator from Texas Instruments, specifically designed for step-down (buck) applications. Key features include:
1. Input Voltage Range: Operates from 4.5V to 60V, making it suitable for a wide range of power supply applications.
2. Output Current: Supports up to 4A of continuous output current.
3. High Efficiency: Achieves efficiencies up to 95%, which helps in reducing heat generation and improving overall system performance.
4. Wide Frequency Range: Adjustable switching frequency from 100 kHz to 1 MHz allows for optimization of the circuit size and performance.
5. Built-in Compensation: Integrated compensators minimize the need for external components and simplify design.
6. Thermal Protection: Features thermal shutdown and soft-start functions for enhanced reliability.
7. Package Type: Packaged in a compact HTQFP-32, facilitating easier PCB layout and space-saving designs.
These features make the LMR51440SDRRR suitable for various applications, including industrial, automotive, and consumer electronics.

Package

The LMR51440SDRRR is packaged in a 16-pin HTQFN (Thermal Pad QFN) package. This type provides efficient thermal performance and a compact footprint for the integrated step-down voltage regulator.

Pinout

The LMR51440SDRRR is a step-down (buck) voltage regulator with a pin count of 24. Its primary functions include converting a higher input voltage to a lower output voltage efficiently, making it suitable for various applications such as power management in portable devices, telecommunications, and automotive systems.
Key pins include:
- VIN: Input voltage.
- GND: Ground connection.
- SW: Switch connection to the inductor.
- COMP: Compensation for loop stability.
- FB: Feedback pin for voltage regulation.
- EN: Enable pin to turn the device on or off.
- SS: Soft-start function to limit inrush current.
- PG: Power good indicator.
The device supports a wide input voltage range and offers features like high efficiency, adjustable output voltage, and thermal shutdown for protection.

Manufacturer

The LMR51440SDRRR is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company primarily known for designing and manufacturing a wide range of analog and digital integrated circuits (ICs), processors, and microcontrollers. Founded in 1930, TI serves various industries, including automotive, industrial, communications, and consumer electronics. The company is recognized for its innovation in power management, signal processing, and embedded processing technologies. TI's products are widely used in applications such as power supply design, battery management, and energy-efficient systems.

Application

The LMR51440SDRRR is a step-down voltage regulator, commonly used in applications such as power management for point-of-load converters, powering microcontrollers, FPGAs, and DSPs, battery-powered devices, industrial automation, telecommunications, and automotive electronics. Its efficiency and compact design make it suitable for space-constrained environments requiring reliable voltage regulation.

Equivalent

The LMR51440SDRRR is a step-down voltage regulator. Equivalent products include the TPS563201, LM2596, and LM2675. These alternatives offer similar input/output voltage ranges and current capabilities. Always verify specific parameters such as efficiency, switching frequency, and package type to ensure compatibility with your application.

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.

Paiements

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