LM2751SD-A

Product Overview

Category: Integrated Circuit (IC)

Use: LM2751SD-A is a voltage regulator IC designed for use in various electronic devices. It provides stable and regulated power supply to the connected components.

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

Package: LM2751SD-A is available in a small surface-mount package, making it suitable for compact electronic devices.

Essence: The essence of LM2751SD-A lies in its ability to regulate and provide reliable power supply to electronic components, ensuring their proper functioning.

Packaging/Quantity: LM2751SD-A is typically sold in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to 3.6V
• Maximum Output Current: 500mA
• Dropout Voltage: 200mV at 100mA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM2751SD-A IC has the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. EN (Enable)
4. FB (Feedback)
5. VOUT (Output Voltage)

Functional Features

• High Efficiency: LM2751SD-A offers high efficiency, minimizing power loss during voltage regulation.
• Adjustable Output Voltage: The output voltage can be adjusted within the specified range, providing flexibility for different applications.
• Overcurrent Protection: The IC incorporates overcurrent protection, safeguarding the connected components from excessive current flow.
• Thermal Shutdown Protection: LM2751SD-A includes thermal shutdown protection, preventing damage due to excessive heat.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption. - Wide input voltage range allows compatibility with various power sources. - Adjustable output voltage provides versatility for different applications. - Overcurrent and thermal shutdown protection enhance the reliability of connected components.

Disadvantages: - Limited maximum output current may restrict usage in high-power applications. - Dropout voltage may cause a slight voltage drop across the regulator.

Working Principles

LM2751SD-A operates as a linear voltage regulator. It regulates the output voltage by comparing it with a reference voltage and adjusting the internal circuitry accordingly. The feedback pin (FB) plays a crucial role in maintaining the desired output voltage.

When the enable pin (EN) is activated, the IC starts regulating the input voltage (VIN) to provide a stable output voltage (VOUT). The internal circuitry ensures that the output voltage remains within the specified range, even when the input voltage or load conditions vary.

Detailed Application Field Plans

LM2751SD-A finds applications in various electronic devices, including but not limited to: - Mobile phones - Portable media players - Digital cameras - Handheld gaming consoles - Wearable devices

Its ability to provide stable and regulated power supply makes it suitable for any application where reliable voltage regulation is required.

Detailed and Complete Alternative Models

Some alternative models to LM2751SD-A include: - LM1117-3.3: A low dropout voltage regulator with fixed 3.3V output voltage. - LT1763: A high-performance, low dropout linear regulator with adjustable output voltage. - TPS7A4700: An ultra-low noise, high PSRR linear regulator with adjustable output voltage.

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

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