LM5140QRWGRQ1

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LM5140QRWGRQ1

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DUAL SYNCHRONOUS BUCK CONTROLLER

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Especificações

Atributo Valor
Part Status Active
Output Type Transistor Driver
Function Step-Down
Output Configuration Positive
Topology Buck
Number of Outputs 2
Output Phases 1
Voltage - Supply (Vcc/Vdd) 3.8V ~ 65V
Frequency - Switching 440kHz, 2.2MHz
Synchronous Rectifier Yes
Clock Sync Yes
Control Features Current Limit, Enable, Frequency Control, Soft Start
Operating Temperature -40°C ~ 150°C (TJ)
Mounting Type Surface Mount, Wettable Flank
Package / Case 40-VFQFN Exposed Pad
Supplier Device Package 40-VQFNP (6x6)
Base Product Number LM5140
Grade Automotive
Qualification AEC-Q100

Visão Geral

Description

The LM5140QRWGRQ1 is a high-efficiency synchronous buck controller designed for automotive applications. It operates over a wide input voltage range of 4.5V to 60V, making it suitable for various power supply designs in automotive environments. The device features an integrated gate driver capable of driving external MOSFETs, enabling efficient power conversion with minimal heat generation.
Key features include a flexible output voltage range, low quiescent current, and advanced protection mechanisms such as overcurrent protection, thermal shutdown, and under-voltage lockout. The LM5140QRWGRQ1 supports multiple operating modes, including pulse-width modulation (PWM) and pulse-frequency modulation (PFM), allowing for optimized efficiency across different load conditions.
Designed for high reliability, it is qualified for automotive applications (AEC-Q100) and is ideal for powering microcontrollers, sensors, and other automotive systems. Its integration of features and robustness makes it a suitable choice for modern automotive power management solutions.

Equivalent

The LM5140QRWGRQ1 is a high-performance synchronous buck controller. Equivalent products include the LTC3861 from Analog Devices, the TPS54060 from Texas Instruments, and the LM2675 from Texas Instruments. These alternatives provide similar functionalities for synchronous step-down conversion and can be selected based on specific design requirements such as voltage range, current rating, and features like soft-start or compensation. Always verify compatibility based on your application needs.

Features

The LM5140QRWGRQ1 is a high-performance synchronous buck controller designed for a wide range of applications, including automotive power systems. Key features include:
1. Input Voltage Range: Supports input voltages from 4.5V to 60V, making it suitable for various automotive applications.
2. Output Current: Capable of driving high output currents, ideal for demanding load requirements.
3. Integrated Gate Drivers: Features high-efficiency gate drivers for N-channel MOSFETs, enhancing performance and reducing component count.
4. Adaptive Phase Control: Optimizes efficiency and transient response by adjusting the number of active phases based on load conditions.
5. Programmable Switching Frequency: Allows for frequency settings up to 1 MHz, facilitating design flexibility.
6. Enhanced Protection Features: Includes over-voltage, under-voltage, and over-temperature protection mechanisms for robust operation.
7. Low Quiescent Current: Ensures energy efficiency, particularly beneficial in low-power states.
This device is ideal for applications such as battery management systems, power supplies, and automotive infotainment systems.

Pinout

The LM5140QRWGRQ1 is a high-performance synchronous buck controller with a pin count of 32. It is designed for high-efficiency power supply applications, particularly in automotive systems.
Key functions include:
- PWM Control: It utilizes peak current mode control for regulating output voltage.
- Power Good Indicator: Monitors output voltage and signals if it is within the specified range.
- Enable Function: Allows for external control of the power supply operation.
- Compensation Network: Built-in compensation for stability across various applications.
- Fault Protection Features: Includes under-voltage, over-voltage, and over-current protection.
The device supports a wide input voltage range, making it suitable for various automotive and industrial applications. It provides flexibility in design while ensuring robust performance and reliability.

Manufacturer

The LM5140QRWGRQ1 is manufactured by Texas Instruments (TI), a leading semiconductor company. Texas Instruments is known for its development and production of a wide range of electronic components, including analog and embedded processing chips. Founded in 1930, TI operates in various sectors, including automotive, industrial, communications, and consumer electronics. The company is recognized for its innovation in integrated circuits and has a strong reputation in providing solutions for power management, sensors, and microcontrollers. TI's products support applications that require high performance and efficiency, making it a key player in the global electronics industry.

Application

The LM5140QRWGRQ1 is a high-performance synchronous buck controller designed for automotive applications. Key application areas include electric vehicle (EV) power supplies, battery management systems, and industrial power management systems. It is suitable for step-down conversion in systems requiring high efficiency and robust power management, such as infotainment systems, advanced driver-assistance systems (ADAS), and automotive lighting. The device supports wide input voltage ranges and features protections against faults, making it ideal for demanding automotive environments.

Package

The LM5140QRWGRQ1 is packaged in a 40-pin HTQFN (Heat Sink Thin Quad Flat No-lead) package, which is designed for efficient thermal performance and space-saving in applications.

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