LM25101AMX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Wide Input Voltage Range, Adjustable Output Voltage, Low Quiescent Current
• Package: 8-Pin SOIC (Small Outline Integrated Circuit)
• 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 37V
• Output Current: Up to 1A
• Switching Frequency: 100kHz to 2.2MHz
• Quiescent Current: 17µA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM25101AMX/NOPB IC has the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. FB: Feedback Pin
4. EN: Enable Pin
5. SW: Switch Node
6. VOUT: Output Voltage
7. PGND: Power Ground
8. COMP: Compensation Pin

Functional Features

• Wide input voltage range allows for versatile applications.
• Adjustable output voltage provides flexibility in power management.
• High efficiency ensures minimal power loss.
• Low quiescent current reduces standby power consumption.
• Integrated protection features such as thermal shutdown and overcurrent protection.

Advantages

• Compact package size enables space-saving designs.
• Wide input voltage range makes it suitable for various power supply systems.
• Adjustable output voltage allows customization for specific requirements.
• High efficiency results in reduced power dissipation and improved energy efficiency.
• Integrated protection features enhance system reliability.

Disadvantages

• Limited output current capability compared to higher-rated regulators.
• Higher switching frequency may require additional filtering for noise-sensitive applications.
• Requires external components for proper operation, increasing overall system complexity.

Working Principles

The LM25101AMX/NOPB is a step-down switching regulator that converts a higher input voltage to a lower output voltage. It utilizes a pulse-width modulation (PWM) control scheme to regulate the output voltage. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the internal switch to maintain the desired output voltage level. The enable pin (EN) allows for easy on/off control of the regulator.

Detailed Application Field Plans

The LM25101AMX/NOPB is commonly used in various applications, including:

1. Industrial Power Supplies: Provides efficient power conversion for industrial equipment.
2. Automotive Electronics: Suitable for automotive power management systems.
3. Telecommunications: Used in telecom infrastructure for voltage regulation.
4. Consumer Electronics: Enables efficient power delivery in devices such as TVs and audio systems.
5. LED Lighting: Supports LED driver circuits for efficient lighting solutions.

Alternative Models

1. LM2596SX-ADJ/NOPB: Similar step-down switching regulator with adjustable output voltage.
2. TPS54331DR/NOPB: Step-down converter with integrated MOSFETs for high efficiency.
3. LT1763CS8-3.3/NOPB: Low dropout linear regulator with fixed output voltage.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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