LM25117QPMHE/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Wide Input Voltage Range, Adjustable Output Voltage, Synchronous Buck Converter
• Package: QFN (Quad Flat No-Lead)
• Essence: Step-Down Voltage Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 42V
• Output Voltage Range: 0.8V to 15V
• Output Current: Up to 3A
• Switching Frequency: 100kHz to 2.2MHz
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM25117QPMHE/NOPB has the following pin configuration:

1. VIN: Input Voltage
2. PGND: Power Ground
3. SW: Switch Node Connection
4. FB: Feedback Voltage Input
5. EN: Enable Pin
6. SS/TR: Soft-Start/Tracking Pin
7. VCC: Internal Bias Supply
8. PG: Power Good Indicator
9. COMP: Compensation Pin
10. AGND: Analog Ground
11. BOOT: Bootstrap Capacitor Connection
12. LX: Inductor Connection
13. SS/TR: Soft-Start/Tracking Pin
14. VOUT: Output Voltage

Functional Features

• High efficiency synchronous buck converter
• Wide input voltage range suitable for various applications
• Adjustable output voltage for flexibility
• Integrated protection features like overcurrent and thermal shutdown
• Soft-start and tracking capability for controlled startup

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power dissipation - Wide input voltage range allows for versatile use - Adjustable output voltage accommodates different requirements - Integrated protection features enhance reliability - Soft-start and tracking capability ensure controlled startup

Disadvantages: - Limited maximum output current of 3A - Requires external components for operation - Higher switching frequency may introduce additional noise

Working Principles

The LM25117QPMHE/NOPB is a step-down voltage regulator that converts a higher input voltage to a lower output voltage. It utilizes synchronous rectification to achieve high efficiency by reducing power losses. The integrated control circuitry adjusts the duty cycle of the internal switches to regulate the output voltage. Feedback from the FB pin is used to maintain the desired output voltage.

Detailed Application Field Plans

The LM25117QPMHE/NOPB can be used in various applications, including but not limited to:

1. Industrial Power Supplies
2. Automotive Electronics
3. Telecommunications Equipment
4. Distributed Power Systems
5. Battery-Powered Devices

Alternative Models

Here are some alternative models that offer similar functionality:

1. LM2596S-ADJ: Step-Down Voltage Regulator, Adjustable Output, TO-263 Package
2. TPS54331RTER: Synchronous Buck Converter, 3A Output Current, QFN Package
3. LT8610ABEMSE#PBF: High Efficiency Step-Down Regulator, 42V Input Range, MSOP Package
4. MP2307DN-LF-Z: 3A, 23V, 340kHz Synchronous Rectified Step-Down Converter, SOP-8 Package

These alternative models provide options with varying specifications and package types, allowing users to choose the most suitable option for their specific requirements.

In conclusion, the LM25117QPMHE/NOPB is a high-efficiency synchronous buck converter that offers a wide input voltage range and adjustable output voltage. It is suitable for various applications and provides integrated protection features. While it has some limitations, there are alternative models available to meet specific needs.