LM2725M/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection

Package: SOIC (Small Outline Integrated Circuit)

Essence: The LM2725M/NOPB is a voltage regulator IC that provides a stable output voltage for various electronic devices.

Packaging/Quantity: The LM2725M/NOPB is available in a standard SOIC package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 20V
• Output Voltage Range: 1.25V to 16V
• Maximum Output Current: 500mA
• Dropout Voltage: 300mV at 500mA
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM2725M/NOPB has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for adjusting the output voltage
4. EN: Enable pin for turning the regulator on/off
5. VOUT: Output voltage pin

Functional Features

• High Efficiency: The LM2725M/NOPB utilizes a synchronous buck converter architecture, resulting in high efficiency power conversion.
• Low Dropout Voltage: The regulator maintains a low dropout voltage even at high load currents, ensuring stable output voltage.
• Adjustable Output Voltage: The output voltage can be adjusted using an external resistor divider connected to the FB pin.
• Overcurrent Protection: The IC incorporates overcurrent protection to prevent damage to the device and the connected load.
• Thermal Shutdown Protection: In case of excessive temperature, the LM2725M/NOPB automatically shuts down to prevent overheating.

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Adjustable output voltage - Overcurrent and thermal protection - Wide input voltage range

Disadvantages: - Limited maximum output current (500mA) - Requires external components for proper operation

Working Principles

The LM2725M/NOPB is a step-down voltage regulator that converts a higher input voltage to a lower output voltage. It utilizes a synchronous buck converter topology, which consists of a high-side MOSFET switch and a low-side synchronous rectifier. The IC regulates the output voltage by controlling the duty cycle of the MOSFET switch.

When the input voltage exceeds the desired output voltage, the regulator reduces the duty cycle, allowing less energy to pass through. Conversely, when the input voltage drops below the desired output voltage, the duty cycle increases to maintain a stable output voltage.

Detailed Application Field Plans

The LM2725M/NOPB can be used in various applications, including: 1. Battery-powered devices 2. Portable electronic devices 3. Automotive electronics 4. Industrial control systems 5. Telecommunications equipment

Detailed and Complete Alternative Models

Some alternative models to the LM2725M/NOPB include: - LM2576-ADJ - LM317T - LM1117-ADJ - LT1084CP-ADJ - TPS5430-ADJ

These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.

In conclusion, the LM2725M/NOPB is a versatile voltage regulator IC with high efficiency, adjustable output voltage, and various protection features. It finds applications in a wide range of electronic devices and offers alternatives for different design needs.