LM5005MH

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LM5005MH

IC REG BUCK ADJ 2.5A 20HTSSOP

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Thông số kỹ thuật

Part Status Obsolete
Base Product Number LM5005
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 7V
Voltage - Input (Max) 75V
Voltage - Output (Min/Fixed) 1.225V
Voltage - Output (Max) 70V
Current - Output 2.5A
Frequency - Switching 50kHz ~ 500kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package 20-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package 20-HTSSOP
Packaging Tube

Tổng quan

Description

The LM5005MH is a step-down switching voltage regulator from Texas Instruments, designed to convert higher input voltages into lower, stable output voltages. It is particularly suited for applications needing high efficiency and compact power supply solutions. The LM5005MH can handle input voltages up to 75V and provide output currents up to 2.5A.
Key features include a wide input voltage range, integrated high-side N-channel MOSFET, thermal shutdown, and current limit protection. It operates at a switching frequency of 500 kHz, which allows for smaller external components and thus, a more compact design. The device is housed in a thermally enhanced 20-pin TSSOP package, which aids in heat dissipation.
The LM5005MH is particularly useful in industrial, automotive, and telecom applications where high reliability and efficiency are crucial. Its design flexibility and robust protection features make it a versatile choice for efficiently managing power in demanding environments.

Features

The LM5005MH is a high-voltage DC-DC buck converter manufactured by Texas Instruments. Key features include:
1. Input Voltage Range: It supports a wide input voltage range from 7.5V to 75V, making it suitable for various industrial and automotive applications.

2. Output Voltage: The device can be adjusted to provide output voltages as low as 1.225V.
3. Output Current: It can deliver up to 2.5A of continuous output current.
4. Switching Frequency: The LM5005MH features an adjustable switching frequency ranging from 50 kHz to 500 kHz, allowing design flexibility and optimization for efficiency or size.
5. Efficiency: It is designed for high efficiency across its operating range, aided by a constant on-time control architecture.
6. Integrated High-Side MOSFET: The device includes a 75V N-channel MOSFET for efficient switching.
7. Protection Features: It includes various protection mechanisms such as thermal shutdown, cycle-by-cycle current limiting, and under-voltage lockout to ensure reliable operation.
8. Package: The LM5005MH is available in a thermally enhanced 20-pin TSSOP package with an exposed pad for better heat dissipation.
These features make the LM5005MH an excellent choice for power-supply designs requiring high efficiency and reliability across a broad input voltage range.

Package

The LM5005MH is a voltage regulator IC that comes in the HTSSOP (Thermally Enhanced Thin Shrink Small Outline Package) package type. This package typically has 20 pins and includes a thermal pad to improve heat dissipation, making it suitable for applications requiring efficient thermal management.

Pinout

The LM5005MH is a monolithic integrated circuit designed for step-down (buck) voltage regulation. It is part of the LM5005 series by Texas Instruments. This particular device is housed in a 20-pin TSSOP (Thin Shrink Small Outline Package) with a PowerPAD for enhanced thermal performance.
Key functions of the LM5005MH include:
1. Input Voltage Range: It can handle a wide input voltage range, typically from 7.5V to 75V.
2. Output Voltage Regulation: It is capable of providing a regulated output voltage, adjustable via external resistors.
3. Switching Frequency: It operates with a programmable switching frequency typically between 50 kHz and 500 kHz.
4. Current Capability: The device can deliver up to 2.5A of output current.
5. Features: It includes various features like soft-start, thermal shutdown, cycle-by-cycle current limit, and frequency synchronization.
The LM5005MH is suitable for various applications including industrial, automotive, and telecommunications systems, where space-efficient and reliable voltage regulation is required.

Manufacturer

The LM5005MH is manufactured by Texas Instruments. Texas Instruments is an American technology company that designs and manufactures semiconductors and various integrated circuits. It is one of the largest semiconductor manufacturers in the world and is known for producing a wide range of electronic components, including those used in automotive, industrial, personal electronics, and communications equipment.

Application

The LM5005MH is a high-voltage buck regulator designed for applications requiring efficient step-down voltage conversion. It is commonly used in industrial power supplies, automotive systems, telecommunications equipment, and distributed power systems. Its ability to handle input voltages up to 75V makes it suitable for systems with high-voltage rails. Additionally, its thermal performance and reliability are advantageous in harsh and demanding environments.

Equivalent

The LM5005MH is a step-down voltage regulator from Texas Instruments. Equivalent products include the LM2678 from Texas Instruments, the MC34063 from ON Semiconductor, and the L4970A from STMicroelectronics. These alternatives vary in specifications, so it's crucial to compare features like input voltage range, output current, and switching frequency to ensure compatibility with your specific application.

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