LM25115SD/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency synchronous buck regulator - Wide input voltage range - Adjustable output voltage - Current mode control - Overcurrent protection - Thermal shutdown protection

Package: 8-Pin WSON package

Essence: The LM25115SD/NOPB is a high-performance synchronous buck regulator IC designed for power management applications. It offers high efficiency and a wide input voltage range, making it suitable for various electronic devices.

Packaging/Quantity: The LM25115SD/NOPB is available in an 8-pin WSON package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 42V
• Output Voltage Range: 0.8V to VIN
• Maximum Output Current: 3A
• Switching Frequency: Up to 1MHz
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LM25115SD/NOPB has the following pin configuration:

1. VIN: Input voltage pin
2. PGND: Power ground pin
3. SW: Switch node connection pin
4. FB: Feedback voltage pin
5. EN: Enable pin
6. SS/TR: Soft-start/Tracking pin
7. VCC: Supply voltage pin
8. PG: Power good indicator pin

Functional Features

• High efficiency conversion
• Adjustable output voltage
• Current mode control for improved stability
• Overcurrent protection for enhanced safety
• Thermal shutdown protection to prevent overheating

Advantages

• Wide input voltage range allows for versatile applications
• High efficiency results in reduced power consumption
• Adjustable output voltage provides flexibility
• Current mode control ensures stability and fast transient response
• Overcurrent protection enhances system reliability
• Thermal shutdown protection prevents damage due to overheating

Disadvantages

• Limited maximum output current of 3A may not be suitable for high-power applications
• Requires external components for operation, increasing complexity and cost

Working Principles

The LM25115SD/NOPB operates as a synchronous buck regulator, converting a higher input voltage to a lower output voltage. It utilizes a current mode control scheme to regulate the output voltage and maintain stability. The integrated circuit includes a high-side and low-side MOSFET switch, which alternately conduct to deliver power to the load. The feedback voltage is compared to a reference voltage to adjust the duty cycle of the switches, controlling the output voltage.

Application Field Plans

The LM25115SD/NOPB can be used in various power management applications, including but not limited to: - Industrial equipment - Automotive systems - Telecommunications devices - Consumer electronics - LED lighting

Alternative Models

1. LM25116SD/NOPB: Similar specifications and features, but with a higher maximum output current of 6A.
2. LM25117SD/NOPB: Similar specifications and features, but with a lower maximum output current of 2A.
3. LM25118SD/NOPB: Similar specifications and features, but with a wider input voltage range of 4.5V to 60V.

These alternative models offer different performance characteristics to suit specific application requirements.

In conclusion, the LM25115SD/NOPB is a versatile and efficient synchronous buck regulator IC designed for power management applications. Its wide input voltage range, adjustable output voltage, and various protection features make it suitable for a wide range of electronic devices. However, its limited maximum output current and requirement for external components should be considered when selecting this IC for high-power applications.