LM25101CSD/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Low quiescent current - Overcurrent protection - Thermal shutdown protection

Package: SOIC (Small Outline Integrated Circuit)

Essence: LM25101CSD/NOPB is a voltage regulator IC designed to provide a stable and regulated output voltage from a wide range of input voltages.

Packaging/Quantity: The LM25101CSD/NOPB is available in a standard SOIC package. It is typically sold in reels containing 2500 units.

Specifications

• Input Voltage Range: 4.5V to 42V
• Output Voltage Range: 1.23V to 37V
• Output Current: Up to 1A
• Quiescent Current: 120µA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM25101CSD/NOPB has the following pin configuration:

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| | --| VIN | --| GND | --| FB | --| EN | --| SW | --| COMP | --| SS/TR | --| VOUT | |___________| ```

Functional Features

1. Wide Input Voltage Range: The LM25101CSD/NOPB can accept input voltages ranging from 4.5V to 42V, making it suitable for various applications.
2. Adjustable Output Voltage: The output voltage can be adjusted using external resistors, allowing flexibility in meeting specific requirements.
3. High Efficiency: The IC incorporates a synchronous buck converter topology, resulting in high efficiency and reduced power dissipation.
4. Overcurrent Protection: The LM25101CSD/NOPB features built-in overcurrent protection, safeguarding the circuit from excessive current flow.
5. Thermal Shutdown Protection: To prevent overheating, the IC includes a thermal shutdown feature that disables the regulator when the temperature exceeds a certain threshold.

Advantages

• Wide input voltage range allows for versatile applications.
• Adjustable output voltage provides flexibility in meeting specific requirements.
• High efficiency reduces power dissipation and improves overall system performance.
• Built-in overcurrent and thermal shutdown protection enhance reliability and safety.

Disadvantages

• Limited output current capability (up to 1A) may not be sufficient for high-power applications.
• The SOIC package may not be suitable for space-constrained designs.

Working Principles

The LM25101CSD/NOPB operates as a synchronous buck converter. It converts the input voltage to a regulated output voltage using pulse-width modulation (PWM) techniques. The internal control circuitry adjusts the duty cycle of the switching transistor to maintain the desired output voltage. Feedback from the output voltage is provided through the FB pin, allowing for precise regulation.

Application Field Plans

The LM25101CSD/NOPB can be used in various applications, including but not limited to: - Power supplies for industrial equipment - Automotive electronics - Battery-powered systems - Telecommunications equipment - LED lighting

Alternative Models

1. LM25102CSD/NOPB: Similar to LM25101CSD/NOPB, but with higher output current capability (up to 2A).
2. LM25103CSD/NOPB: Similar to LM25101CSD/NOPB, but with adjustable frequency operation.
3. LM25104CSD/NOPB: Similar to LM25101CSD/NOPB, but with integrated power MOSFETs.

These alternative models offer different features and capabilities, allowing users to choose the most suitable option for their specific requirements.

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