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LM5073MHX
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: 20-TSSOP (Thin Shrink Small Outline Package)
Essence: The LM5073MHX is a power management IC designed for high-efficiency DC-DC conversion applications.
Packaging/Quantity: The LM5073MHX is available in a 20-TSSOP 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 LM5073MHX has a 20-pin TSSOP package with the following pin configuration:
- VIN: Input voltage
- GND: Ground
- VCC: Supply voltage for internal circuitry
- FB: Feedback pin for output voltage regulation
- COMP: Compensation pin for loop stability
- SS/TR: Soft-start and tracking control pin
- EN: Enable pin for turning the device on/off
- PG: Power good indicator
- SYNC: Synchronization input for external clock
- SW: Switch node connection for inductor
- BST: Boost capacitor connection
- AGND: Analog ground
- PGND: Power ground
- NC: No connect
- NC: No connect
- NC: No connect
- NC: No connect
- NC: No connect
- NC: No connect
- NC: No connect
Functional Features
- Wide input voltage range allows for versatile applications
- Adjustable output voltage provides flexibility in power supply design
- High efficiency conversion minimizes power loss
- Overcurrent protection safeguards the circuit from excessive current
- Thermal shutdown protection prevents overheating and damage to the IC
Advantages and Disadvantages
Advantages: - High efficiency leads to energy savings - Wide input voltage range accommodates various power sources - Adjustable output voltage suits different load requirements - Comprehensive protection features enhance system reliability
Disadvantages: - Limited maximum output current may restrict certain high-power applications - Requires external components for complete power management solution
Working Principles
The LM5073MHX operates as a synchronous buck converter, converting a higher input voltage to a lower output voltage with high efficiency. It utilizes pulse-width modulation (PWM) control to regulate the output voltage based on the feedback received from the FB pin. The COMP pin is used to adjust the loop stability for optimal performance.
Detailed Application Field Plans
The LM5073MHX is commonly used in various power management applications, including but not limited to: - Industrial automation systems - Telecommunications equipment - Automotive electronics - Renewable energy systems - Battery charging circuits
Detailed and Complete Alternative Models
Some alternative models to the LM5073MHX that offer similar functionality are: - LM2596: Step-down switching regulator - LT8610: Synchronous step-down DC-DC converter - TPS54332: 3A, 28V input, step-down DC-DC converter - ADP2384: 4A, 36V input, synchronous step-down DC-DC converter
These alternative models can be considered based on specific application requirements and design constraints.
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Énumérez 10 questions et réponses courantes liées à l'application de LM5073MHX dans les solutions techniques
Sure! Here are 10 common questions and answers related to the application of LM5073MHX in technical solutions:
Q: What is LM5073MHX? A: LM5073MHX is a high-voltage power management integrated circuit (PMIC) designed for use in Power over Ethernet (PoE) applications.
Q: What are the key features of LM5073MHX? A: LM5073MHX features include IEEE 802.3bt-compliant PoE PD interface, integrated DC-DC converter, programmable output voltage, and advanced protection features.
Q: How does LM5073MHX support PoE applications? A: LM5073MHX supports PoE applications by providing power conversion, control, and protection functions for devices connected to an Ethernet network.
Q: Can LM5073MHX be used in both Type 1 and Type 2 PoE applications? A: Yes, LM5073MHX is compatible with both Type 1 (up to 15.4W) and Type 2 (up to 60W) PoE applications.
Q: What is the input voltage range supported by LM5073MHX? A: LM5073MHX supports an input voltage range of 36V to 57V, which is typical for PoE applications.
Q: How can I program the output voltage of LM5073MHX? A: The output voltage of LM5073MHX can be programmed using external resistors connected to the VOUT pin.
Q: Does LM5073MHX provide any protection features? A: Yes, LM5073MHX includes protection features such as overcurrent protection, overvoltage protection, undervoltage lockout, and thermal shutdown.
Q: Can LM5073MHX operate in a wide temperature range? A: Yes, LM5073MHX is designed to operate in a temperature range of -40°C to +125°C, making it suitable for various environments.
Q: What are the typical applications of LM5073MHX? A: LM5073MHX can be used in a wide range of applications, including IP phones, wireless access points, security cameras, and industrial automation equipment.
Q: Is LM5073MHX available in different package options? A: Yes, LM5073MHX is available in a 20-pin HTSSOP package, which provides ease of use and efficient heat dissipation.
Please note that these answers are general and may vary depending on specific design requirements and application scenarios.