LM5073MH

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection

Package: PowerPAD HTSSOP

Essence: The LM5073MH is a power management IC designed for high-efficiency DC-DC conversion applications.

Packaging/Quantity: The LM5073MH is available in a PowerPAD HTSSOP package. It is typically sold in reels of 250 units.

Specifications

Input Voltage Range: 4.5V to 75V
Output Voltage Range: 0.8V to 60V
Maximum Output Current: 3A
Switching Frequency: 100kHz to 1MHz
Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM5073MH has the following pin configuration:

VIN: Input voltage pin
GND: Ground pin
VCC: Supply voltage pin
FB: Feedback pin for output voltage regulation
COMP: Compensation pin for loop stability
EN: Enable pin for turning the device on/off
SS/TR: Soft-start and tracking pin
PG: Power good indicator pin
SW: Switch node pin for connecting the external inductor
BOOT: Bootstrap capacitor connection pin

Functional Features

Wide input voltage range allows for versatile applications
Adjustable output voltage provides flexibility
Overcurrent protection safeguards against excessive current flow
Thermal shutdown protection prevents overheating
Power good indicator for monitoring the output voltage status
Soft-start and tracking feature for controlled startup

Advantages

High efficiency leads to reduced power dissipation
Wide input voltage range enables compatibility with various power sources
Adjustable output voltage allows for customization based on specific requirements
Overcurrent and thermal shutdown protection enhance system reliability
Power good indicator provides easy monitoring of the output voltage status

Disadvantages

Limited maximum output current may not be suitable for high-power applications
Switching frequency range may not be optimal for all designs

Working Principles

The LM5073MH operates as a synchronous buck converter, converting a higher input voltage to a lower output voltage efficiently. It utilizes pulse-width modulation (PWM) techniques to control the switching of the internal power MOSFETs. The feedback loop regulates the output voltage by adjusting the duty cycle of the switching waveform.

Detailed Application Field Plans

The LM5073MH is commonly used in various power management applications, including but not limited to: - Industrial automation systems - Telecommunications equipment - Automotive electronics - Renewable energy systems - LED lighting

Detailed and Complete Alternative Models

LM5073MHX/NOPB: Similar to LM5073MH, but with extended temperature range (-55°C to +125°C)
LM5073MHX-80/NOPB: Similar to LM5073MH, but optimized for 80V input voltage range
LM5073MHX-ADJ/NOPB: Similar to LM5073MH, but with adjustable output voltage range

These alternative models offer similar functionality with slight variations to cater to specific application requirements.

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Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням LM5073MH у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of LM5073MH in technical solutions:

Q: What is LM5073MH? A: LM5073MH is a high-voltage power over Ethernet (PoE) PD interface controller.
Q: What is the maximum input voltage supported by LM5073MH? A: LM5073MH supports a maximum input voltage of 100V.
Q: Can LM5073MH be used for both PoE and PoE+ applications? A: Yes, LM5073MH is designed to support both PoE (IEEE 802.3af) and PoE+ (IEEE 802.3at) applications.
Q: What is the maximum output power that can be delivered using LM5073MH? A: LM5073MH can deliver up to 25.5W of output power.
Q: Does LM5073MH require an external MOSFET for operation? A: Yes, LM5073MH requires an external N-channel MOSFET for its operation.
Q: Can LM5073MH operate in a wide temperature range? A: Yes, LM5073MH is designed to operate in a temperature range of -40°C to +125°C.
Q: Is LM5073MH suitable for use in industrial applications? A: Yes, LM5073MH is suitable for use in various industrial applications such as factory automation, building automation, etc.
Q: Does LM5073MH provide protection features for fault conditions? A: Yes, LM5073MH provides protection features like over-temperature protection, over-current protection, and under-voltage lockout.
Q: Can LM5073MH be used in isolated or non-isolated PoE applications? A: LM5073MH can be used in both isolated and non-isolated PoE applications, depending on the system requirements.
Q: What is the package type of LM5073MH? A: LM5073MH is available in a 20-pin HTSSOP package.

Please note that these answers are general and may vary based on specific application requirements. It is always recommended to refer to the LM5073MH datasheet and consult with technical experts for detailed information.