LM5104M/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Voltage, High Frequency, Synchronous Buck Controller
• Package: 16-Pin HTSSOP
• Essence: Efficient and Flexible Power Conversion Solution
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 75V
• Output Voltage Range: 0.8V to 60V
• Switching Frequency: Up to 1MHz
• Maximum Duty Cycle: 90%
• Operating Temperature Range: -40°C to 125°C
• Features: Adjustable Soft-Start, Enable Input, Overcurrent Protection, Thermal Shutdown

Pin Configuration

The LM5104M/NOPB has a 16-pin HTSSOP package with the following pin configuration:

1. VCC
2. GND
3. FB
4. COMP
5. SS/TR
6. RT/CLK
7. SYNC
8. EN
9. PGND
10. SW
11. SW
12. SW
13. SW
14. SW
15. SW
16. SW

Functional Features

• High Voltage Operation: The LM5104M/NOPB can handle input voltages ranging from 4.5V to 75V, making it suitable for a wide range of applications.
• High Frequency Operation: With a switching frequency of up to 1MHz, this controller enables efficient power conversion in high-frequency applications.
• Synchronous Buck Control: The LM5104M/NOPB is designed for synchronous buck converter applications, providing improved efficiency and power delivery.
• Adjustable Soft-Start: The soft-start feature allows for controlled startup, reducing inrush current and improving system reliability.
• Overcurrent Protection: The controller includes overcurrent protection to safeguard against excessive current flow, protecting the circuit and connected components.
• Thermal Shutdown: In case of excessive temperature, the LM5104M/NOPB has a built-in thermal shutdown feature that automatically disables the device to prevent damage.

Advantages and Disadvantages

Advantages: - Wide input voltage range enables versatile applications - High switching frequency allows for efficient power conversion - Synchronous buck control improves efficiency - Adjustable soft-start reduces inrush current - Overcurrent protection enhances system safety - Thermal shutdown prevents device damage due to overheating

Disadvantages: - Limited pin configuration options may restrict certain circuit designs - Requires external components for complete power conversion solution

Working Principles

The LM5104M/NOPB is a synchronous buck controller that regulates the output voltage by controlling the duty cycle of the power switch. It operates by converting the input voltage to a high-frequency square wave, which is then filtered and regulated to provide the desired output voltage. The controller adjusts the duty cycle based on feedback from the output voltage, maintaining a stable and accurate output.

Application Field Plans

The LM5104M/NOPB is suitable for various power management applications, including but not limited to: - Industrial Power Supplies - Telecom Infrastructure - Automotive Electronics - LED Lighting Systems - Battery Charging Systems - Distributed Power Architectures

Alternative Models

For similar power management requirements, alternative models to consider include: - LM5113: High Voltage, High Frequency Half-Bridge Gate Driver - LM25066A: Dual Channel Current/Voltage Monitor with PMBus Interface - LM34927: 2MHz, 1.5A Synchronous Buck Converter

These alternative models offer different features and specifications, allowing for flexibility in choosing the most suitable solution for specific applications.

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