LM5025MTCX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Voltage Buck Controller
• Package: 16-TSSOP
• Essence: Efficient power conversion
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 6V to 100V
• Output Voltage Range: 0.8V to 90% of VIN
• Switching Frequency: Up to 2MHz
• Operating Temperature Range: -40°C to +125°C
• Features: Adjustable soft-start, cycle-by-cycle current limit, thermal shutdown, precision reference voltage

Pin Configuration

The LM5025MTCX/NOPB has the following pin configuration:

1. COMP: Compensation pin for loop stability
2. FB: Feedback pin for output voltage regulation
3. RT/CLK: External resistor or clock input for setting switching frequency
4. SS/TR: Soft-start and tracking pin for controlling startup time and voltage tracking
5. VREF: Reference voltage output for feedback purposes
6. GND: Ground connection
7. DRVH: High-side gate driver output
8. DRVL: Low-side gate driver output
9. VCC: Supply voltage input
10. UVLO: Undervoltage lockout threshold pin
11. SYNC: Synchronization input for external clock synchronization
12. EN/UV: Enable and undervoltage lockout control pin
13. PGND: Power ground connection
14. SS/TR: Soft-start and tracking pin for controlling startup time and voltage tracking
15. VSENSE: Current sense input for cycle-by-cycle current limit
16. VIN: Input voltage supply

Functional Features

• High voltage buck controller for efficient power conversion
• Wide input voltage range allows for versatile applications
• Adjustable soft-start feature for controlled startup time
• Cycle-by-cycle current limit ensures safe operation
• Thermal shutdown protection prevents overheating
• Precision reference voltage for accurate feedback regulation

Advantages and Disadvantages

Advantages

• Efficient power conversion
• Wide input voltage range
• Adjustable soft-start for controlled startup
• Comprehensive protection features
• Accurate feedback regulation

Disadvantages

• Limited to buck converter applications
• Requires external components for complete functionality

Working Principles

The LM5025MTCX/NOPB is a high voltage buck controller IC that enables efficient power conversion. It operates by regulating the output voltage based on feedback from the FB pin. The COMP pin is used to stabilize the control loop, ensuring proper voltage regulation. The RT/CLK pin allows for setting the switching frequency either through an external resistor or an external clock signal.

During startup, the soft-start feature gradually increases the output voltage, preventing excessive inrush current. The cycle-by-cycle current limit protects against overcurrent conditions, enhancing system safety. In case of excessive temperature, the thermal shutdown feature activates, preventing damage to the IC.

Detailed Application Field Plans

The LM5025MTCX/NOPB is commonly used in various power management applications, including:

1. Industrial power supplies
2. Telecom infrastructure
3. Automotive electronics
4. LED lighting systems
5. Battery charging circuits

Its wide input voltage range and efficient power conversion make it suitable for diverse applications requiring regulated power supply.

Detailed and Complete Alternative Models

1. LM5017: High Voltage Buck Controller with Integrated MOSFETs
2. LM5116: Synchronous Buck Controller with Wide Input Voltage Range
3. LM25085: High Voltage Buck Controller with Integrated Gate Drivers
4. LM2596: Simple Switcher Power Converter with Adjustable Output Voltage
5. LM3478: High Efficiency Buck Controller for Low Voltage Applications

These alternative models offer similar functionality and can be considered as alternatives to the LM5025MTCX/NOPB based on specific application requirements.

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