LM25115AMT/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Wide Input Voltage Range, Adjustable Output Voltage, Synchronous Buck Converter
• Package: 16-Pin TSSOP
• Essence: Step-Down Switching Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 42V
• Output Voltage Range: 0.8V to 20V
• Output Current: Up to 1.5A
• Switching Frequency: 100kHz to 2.2MHz
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM25115AMT/NOPB IC has the following pin configuration:

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

Functional Features

• Wide input voltage range allows for versatile applications.
• Adjustable output voltage provides flexibility in power management.
• High efficiency ensures minimal power loss during conversion.
• Synchronous buck converter architecture improves overall performance.
• Power good indicator for monitoring the output voltage stability.

Advantages

• High efficiency results in reduced power consumption and heat generation.
• Wide input voltage range enables compatibility with various power sources.
• Adjustable output voltage allows customization for specific requirements.
• Synchronous buck converter design enhances overall performance.
• Power good indicator ensures reliable operation.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• Requires external components for proper operation.
• Higher switching frequencies may introduce additional noise.

Working Principles

The LM25115AMT/NOPB is a step-down switching regulator that converts a higher input voltage to a lower output voltage. It utilizes a synchronous buck converter architecture, which consists of a high-side MOSFET, low-side MOSFET, and an inductor. The IC regulates the output voltage by controlling the duty cycle of the high-side and low-side switches.

During operation, the input voltage is applied to the VIN pin, and the desired output voltage is set using the feedback voltage (FB) pin. The IC adjusts the duty cycle of the switches to maintain the output voltage within the specified range. The switching frequency can be adjusted using external timing components connected to the RT and CT pins.

Detailed Application Field Plans

The LM25115AMT/NOPB is commonly used in various applications, including:

1. Industrial Automation: Powering control systems, motor drives, and sensors.
2. Automotive Electronics: Providing power to infotainment systems, lighting, and navigation devices.
3. Telecommunications: Powering base stations, routers, and network equipment.
4. Consumer Electronics: Powering portable devices, audio/video equipment, and home appliances.
5. Renewable Energy Systems: Regulating power from solar panels or wind turbines.

Alternative Models

Here are some alternative models that offer similar functionality:

1. LM2596S-ADJ: Adjustable Step-Down Switching Regulator, 3A Output Current.
2. LM22672MRX-ADJ: Adjustable Step-Down Switching Regulator, 2.5A Output Current.
3. TPS5430DDAR: Wide Input Voltage Range Step-Down Converter, 3A Output Current.

These alternative models can be considered based on specific requirements and application needs.

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