LM25101BMA/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High efficiency, wide input voltage range, adjustable output voltage, compact package
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 42V
• Output Voltage Range: 1.23V to 37V
• Output Current: Up to 1A
• Switching Frequency: 500kHz
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM25101BMA/NOPB has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for output voltage regulation
4. EN: Enable pin for turning the device on/off
5. SS/TR: Soft-start/Tracking pin for controlling start-up behavior
6. VOUT: Output voltage pin
7. SW: Switch node pin for connecting the inductor and power switch
8. PGND: Power ground pin

Functional Features

• Wide input voltage range allows for versatile applications
• Adjustable output voltage provides flexibility in power supply design
• High efficiency minimizes power loss and maximizes energy conversion
• Integrated protection features such as thermal shutdown and overcurrent protection ensure safe operation
• Soft-start function prevents excessive inrush current during start-up

Advantages

• Compact package enables space-saving designs
• Wide input voltage range accommodates various power sources
• High efficiency reduces power dissipation and improves overall system performance
• Adjustable output voltage allows customization for specific requirements
• Integrated protection features enhance reliability and safety

Disadvantages

• Limited output current may not be suitable for high-power applications
• Requires external components for complete power supply implementation
• Higher cost compared to non-regulated power solutions

Working Principles

The LM25101BMA/NOPB is a voltage regulator that operates by converting the input voltage to a regulated output voltage. It utilizes a switching regulator topology to achieve high efficiency. The device controls the duty cycle of an internal power switch to regulate the output voltage based on the feedback received from the FB pin.

During operation, the input voltage is connected to the VIN pin, and the desired output voltage is set using external resistors connected to the FB pin. The EN pin enables or disables the device, while the SS/TR pin controls the soft-start behavior. The SW pin connects to an inductor and power switch to perform the switching regulation.

Detailed Application Field Plans

The LM25101BMA/NOPB is commonly used in various applications, including:

1. Industrial Power Supplies: Provides regulated power for industrial equipment and machinery.
2. Automotive Electronics: Used in automotive systems such as infotainment, lighting, and powertrain control modules.
3. Telecommunications: Enables efficient power management in telecom infrastructure equipment.
4. Renewable Energy Systems: Regulates power in solar panels, wind turbines, and other renewable energy sources.
5. Consumer Electronics: Used in portable devices, home appliances, and audio/video equipment.

Detailed and Complete Alternative Models

1. LM2576-ADJ: Adjustable voltage regulator with a higher output current capability.
2. LM2596S-ADJ: Step-down voltage regulator with adjustable output voltage.
3. LM317T: Adjustable positive voltage regulator with a wide input voltage range.
4. LT1084CP-ADJ: High-current adjustable linear voltage regulator.
5. TPS5430: Synchronous step-down voltage regulator with adjustable output voltage.

These alternative models offer similar functionality and can be considered as substitutes for the LM25101BMA/NOPB in different applications.

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