LM5143RHAR

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LM5143RHAR

+物料清單

3.5-V TO 65-V LOW-IQ, DUAL OUTPU

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規格

屬性 價值
Part Status Active
Output Type Transistor Driver
Function Step-Down
Output Configuration Positive
Topology Buck
Number of Outputs 2
Output Phases 2
Voltage - Supply (Vcc/Vdd) 3.5V ~ 65V
Frequency - Switching 100kHz ~ 2.2MHz
Duty Cycle (Max) 100%
Synchronous Rectifier Yes
Clock Sync Yes
Control Features Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start
Operating Temperature -40°C ~ 150°C (TJ)
Mounting Type Surface Mount
Package / Case 40-VFQFN Exposed Pad
Supplier Device Package 40-VQFN (6x6)
Base Product Number LM5143

概述

Description

The LM5143RHAR is a high-performance, synchronous buck controller designed for step-down voltage regulation. It features a wide input voltage range of 4.5V to 60V, making it suitable for various applications, including industrial, automotive, and telecommunications. This device utilizes a peak current-mode control architecture, which enhances stability and transient response.
Key features include integrated MOSFET drivers, programmable soft-start, and adjustable switching frequency (up to 1 MHz). It supports advanced protection mechanisms such as under-voltage lockout (UVLO), over-voltage protection (OVP), and thermal shutdown, ensuring robust operation. The LM5143RHAR is optimized for efficiency, minimizing power loss during operation, and is capable of driving high load currents.
Its compact QFN package facilitates space-constrained designs, making it a favored choice among engineers for creating reliable and efficient power supplies in various electronic systems. Overall, the LM5143RHAR is a versatile and efficient solution for high-voltage DC-DC conversion applications.

Equivalent

The LM5143RHAR is a synchronous buck controller primarily used in power management applications. Equivalent products include the TPS563201 from Texas Instruments, the LTC3865 from Analog Devices, and the NCP81239 from ON Semiconductor. These alternatives may offer similar features such as high efficiency, adjustable output voltage, and fast transient response, but it's essential to verify specific parameters like input voltage range and switching frequency to ensure compatibility with your application.

Features

The LM5143RHAR is a high-performance synchronous buck controller designed for various power management applications. Key features include:
1. Input Voltage Range: Supports 4.5V to 60V input voltage, suitable for automotive and industrial applications.

2. Output Current: Capable of driving high output current loads, making it ideal for power supplies.
3. Integrated Drivers: Features integrated high-side and low-side MOSFET drivers, enhancing efficiency and reducing external component count.
4. Adaptive Dead-Time Control: Optimizes switching performance and minimizes power losses.
5. Programmable Switching Frequency: Offers adjustable switching frequencies from 100 kHz to 1 MHz, providing design flexibility.
6. Voltage Mode Control: Ensures stable operation under various load conditions.
7. Protection Features: Includes over-voltage, under-voltage, and thermal shutdown protections for enhanced reliability.
8. Power Good Indicator: Provides an output flag to indicate proper operation.
9. Small Package: Comes in a compact HTQFN-32 package for space-constrained designs.
These features make the LM5143RHAR suitable for diverse applications, including DC-DC converters and battery management systems.

Pinout

The LM5143RHAR is a high-performance, synchronous buck controller from Texas Instruments. It features a total of 32 pins.
Key functions of the LM5143 include:
- Voltage Regulation: It regulates output voltage for high-efficiency buck converters.
- PWM Control: It uses a voltage-mode control architecture with adjustable frequency.
- Power Good Indicator: It provides a power good signal to indicate the output voltage is within the desired range.
- Compensation Network: Integrated features for output voltage compensation to optimize transient response.
- Enable/Disable Control: It includes pins for enabling or disabling the operation.
- Soft-Start Functionality: To minimize inrush current during startup.
For detailed configuration and pin functionalities, refer to the LM5143 datasheet provided by Texas Instruments.

Manufacturer

The LM5143RHAR is manufactured by Texas Instruments (TI), a leading global semiconductor company. Founded in 1930, Texas Instruments is headquartered in Dallas, Texas. The company designs and produces a wide range of semiconductor products, including analog ICs, embedded processors, and digital signal processors. TI serves various industries, including automotive, industrial, communications, and consumer electronics.
The LM5143RHAR specifically is a synchronous buck controller designed for power management applications. It is used in scenarios where efficient voltage regulation is crucial, such as in power supplies for computers and various electronic devices. Texas Instruments is known for its innovative technologies and commitment to quality, making it a significant player in the semiconductor industry.

Application

The LM5143RHAR is a high-performance, synchronous buck controller suitable for various applications, including:
1. Telecommunications: Powering telecom infrastructure and networking equipment.
2. Industrial Automation: Supplying power for industrial control systems and robotics.
3. Computing: Providing voltage regulation for servers and high-performance computing systems.
4. Consumer Electronics: Used in devices requiring efficient power management.
5. Automotive: Powering electronic control units (ECUs) and other automotive applications.
6. LED Drivers: Efficiently driving LED lighting solutions.
Its versatility and efficiency make it ideal for multiple power management scenarios across these sectors.

Package

The LM5143RHAR is packaged in a HTQFN (Heat Sink Thin Quad Flat No-lead) package, specifically a 16-pin configuration with a thermal pad for enhanced heat dissipation. This package type is designed for surface mounting.