LMR51420XDDCR

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LMR51420XDDCR

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SIMPLE SWITCHER POWER CONVERTER

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正品保證

規格

屬性 價值
Package / Case Tape & Reel (TR),Cut Tape (CT)
Series SIMPLE SWITCHER®
Part Status Active
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 4.5V
Voltage - Input (Max) 36V
Voltage - Output (Min/Fixed) 0.6V
Voltage - Output (Max) 34.2V
Current - Output 2A
Frequency - Switching 500kHz
Synchronous Rectifier Yes
Operating Temperature -40°C ~ 150°C (TJ)
Mounting Type Surface Mount

概述

Description

The LMR51420XDDCR is a step-down DC-DC converter from Texas Instruments, part of their SIMPLE SWITCHER series. It is designed for applications requiring efficient power regulation in compact spaces. This device operates with an input voltage range of 4 V to 36 V, allowing flexibility in powering various systems. It delivers an output current of up to 2 A with high efficiency, making it suitable for battery-powered and industrial applications.
The LMR51420XDDCR features a fixed switching frequency of 2.2 MHz, enabling the use of smaller external components and minimizing solution size. It includes an integrated high-side MOSFET and supports a wide output voltage range, which can be adjusted via external resistors. Key features include internal compensation, current-mode control, and thermal shutdown for reliable operation.
The converter is housed in a small 8-pin HSOIC package, which facilitates easy integration into space-constrained designs. With its robust feature set, the LMR51420XDDCR is ideal for applications like embedded systems, industrial automation, and distributed power architectures.

Equivalent

The LMR51420XDDCR is a step-down DC-DC converter from Texas Instruments. Equivalent products from other manufacturers include:
1. LM2596 - from Texas Instruments, a popular step-down regulator.
2. MP1584 - from Monolithic Power Systems, a compact buck converter.
3. LMR36520 - from Texas Instruments, offering similar functionality with minor differences.
4. RT8250 - from Richtek, a high-efficiency buck converter.
These alternatives are broadly used for similar applications in power supply designs. Always check the specific electrical characteristics and pin compatibility.

Features

The LMR51420XDDCR is a step-down (buck) DC-DC converter designed by Texas Instruments. Key features include:
1. Input Voltage Range: Supports a wide input voltage range from 4 V to 36 V, making it suitable for a variety of applications.
2. Output Current: Capable of delivering up to 2 A of continuous output current.
3. Switching Frequency: Operates at a fixed switching frequency of 2.2 MHz, which allows for the use of small external components and helps maintain high efficiency.
4. Efficiency: Designed for high efficiency, which minimizes heat generation and improves performance.
5. Quiescent Current: Low quiescent current of 75 µA during operation, enhancing battery life in portable applications.
6. Protection Features: Includes overcurrent protection, thermal shutdown, and undervoltage lockout to ensure reliable operation.
7. Package: Comes in a compact 8-pin VSON package, which helps save board space in tight designs.
8. Applications: Suitable for use in industrial, automotive, and consumer electronics applications where efficient power conversion is required.
These features make the LMR51420XDDCR a versatile and efficient solution for powering a wide range of electronic devices.

Pinout

The LMR51420XDDCR is a synchronous step-down DC-DC converter from Texas Instruments. It comes in an 8-pin package, specifically a VSON (Very Thin Small Outline No-lead) package. The primary function of this device is to convert a higher input voltage to a lower output voltage efficiently, which makes it suitable for applications requiring compact power solutions.
Here are the pin functions:
1. VIN: Input voltage supply.
2. EN: Enable pin to turn the device on or off.
3. SW: Switch node, connected to the output inductor.
4. GND: Ground reference for the device.
5. FB: Feedback pin for voltage regulation.
6. RT/CLK: Resistor timing or clock input to set the switching frequency.
7. PG: Power good indicator.
8. VCC: Internal supply voltage.
The LMR51420XDDCR is designed for applications needing small solution sizes and high efficiency, supporting input voltages typically up to 36V and output currents of up to 2A.

Manufacturer

The LMR51420XDDCR is manufactured by Texas Instruments (TI). Texas Instruments is a global technology company that designs and manufactures semiconductors and integrated circuits. TI is well-known for its wide range of electronic products that serve various industries, including automotive, industrial, personal electronics, and communications equipment. The company specializes in developing analog chips and embedded processors, making it a key player in the electronics and semiconductor industry.

Application

The LMR51420XDDCR is a step-down DC-DC converter used in various applications like telecommunications, industrial automation, and consumer electronics. It is suitable for creating efficient power supply solutions for microcontrollers, FPGAs, and ASICs. This converter is ideal for battery-powered devices due to its low quiescent current and high efficiency. Additionally, it is used in automotive systems for powering infotainment, lighting, and ADAS components. Its compact design and robust performance make it a good choice for portable devices, IoT applications, and distributed power systems where space and energy efficiency are critical.

Package

The LMR51420XDDCR is a DC-DC buck converter from Texas Instruments, available in a 10-pin VSON (VSON-10) package. This package is compact, thermally efficient, and suitable for small form-factor applications.

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