LM5576MHX

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LM5576MHX

IC REG BUCK ADJ 3A 20HTSSOP

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  • 製造商。 部分 #LM5576MHX
  • 包 20-PowerTSSOP
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規格

Package Tape & Reel (TR),Cut Tape (CT)
Series SIMPLE SWITCHER®
ProductStatus Obsolete
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 6V
Voltage-Input(Max) 75V
Voltage-Output(Min/Fixed) 1.225V
Voltage-Output(Max) 70V
Current-Output 3A
Frequency-Switching 50kHz ~ 500kHz
SynchronousRectifier No
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 20-PowerTSSOP (0.173, 4.40mm Width)

概述

Description

The LM5576MHX is a high-voltage switching regulator designed by Texas Instruments for efficient power management in various applications. It is part of the LM557x series and is characterized by its wide input voltage range, typically from 6V to 75V, making it suitable for industrial and automotive applications. The device is capable of delivering up to 3A of output current with high efficiency and minimal external components.
Key features include an adjustable output voltage, a switching frequency that can be set up to 500 kHz, and an integrated high-side N-channel MOSFET. It also provides various protection mechanisms such as thermal shutdown, cycle-by-cycle current limiting, and under-voltage lockout to ensure reliable operation in challenging environments.
The LM5576MHX is typically used in applications that require step-down conversion from high input voltages to lower output voltages, like battery-powered systems, distributed power systems, and point-of-load power supplies. Its compact and efficient design helps in reducing the size and cost of power management solutions.

Features

The LM5576MHX is a step-down switching voltage regulator designed for high-efficiency power conversion. Key features include:
1. Wide Input Voltage Range: It operates from 6V to 75V, enabling usage in various applications.
2. Adjustable Output Voltage: The output can be set using a resistor divider, providing flexibility for different voltage requirements.
3. High Efficiency: It features an integrated N-channel MOSFET for efficient power conversion.
4. Switching Frequency: Adjustable from 50 kHz to 500 kHz, allowing optimization for size and efficiency.
5. Current Limit and Thermal Shutdown: Provides protection against overcurrent conditions and overheating.
6. Soft-Start Feature: Limits inrush current during startup to protect the system.
7. Precision Enable Pin: Allows for highly accurate timing and sequencing.
8. Low Shutdown Current: Reduces power consumption when not in use.
9. Adjustable UVLO: Customizable under-voltage lockout for input supply.
These features make the LM5576MHX suitable for industrial, automotive, and distributed power systems where robust and efficient power regulation is required.

Package

The LM5576MHX is a switching regulator IC that comes in a 20-pin TSSOP (Thin Shrink Small Outline Package) with exposed pad. The "MHX" suffix typically refers to the specific package and reel configuration for automated assembly processes.

Pinout

The LM5576MHX is a voltage regulator IC, specifically a step-down (buck) switching regulator. It typically comes in a thermally enhanced 20-pin TSSOP (Thin Shrink Small Outline Package) with an exposed pad for improved thermal performance.
Key functions of the LM5576MHX include:
1. Input Voltage Range: It can handle a wide input voltage range, typically from 6V to 75V.
2. Output: It provides a regulated output voltage that can be adjusted using external resistors.
3. Switching Frequency: The device operates at a switching frequency that can be adjusted by an external resistor.
4. Current Capability: It is capable of delivering a continuous output current usually up to 3A.
5. Protection Features: The LM5576MHX includes built-in protection features such as thermal shutdown, cycle-by-cycle current limiting, and under-voltage lockout.
These features make it suitable for various applications, including industrial and automotive systems, where high input voltage and efficiency are required.

Manufacturer

The LM5576MHX is manufactured by Texas Instruments. Texas Instruments (TI) is a major American technology company that designs and manufactures semiconductors and various integrated circuits. They focus on developing analog and embedded processing products for a wide range of industries, including automotive, industrial, personal electronics, and communications. TI is well-known for its innovation in semiconductor technology and is a key player in the electronics sector globally.

Application

The LM5576MHX is a step-down switching voltage regulator suitable for applications requiring efficient power conversion. Its typical application areas include automotive electronics, industrial systems, telecommunications equipment, and distributed power systems. It is ideal for powering microcontrollers, sensors, and other peripheral devices in systems that require stable and adjustable voltage outputs from higher voltage sources.

Equivalent

The LM5576MHX is a step-down switching voltage regulator. Equivalent products include the LM5576MH/NOPB, LM5007, and the LM2676 from Texas Instruments, as well as similar parts like the LT3680 from Analog Devices and the MP1584 from Monolithic Power Systems. When selecting equivalents, ensure matching specifications like input voltage range, output current, and thermal performance.

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