SM72482/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High efficiency, low dropout voltage, adjustable output voltage, compact package
• Package: SOP-8 (Small Outline Package)
• Essence: SM72482/NOPB is a voltage regulator IC designed to provide stable and regulated output voltage for various electronic devices.
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 2.5V to 18V
• Output Voltage Range: 1.25V to 16V
• Dropout Voltage: 200mV at 500mA
• Output Current: Up to 500mA
• Quiescent Current: 75µA
• Line Regulation: ±0.2%
• Load Regulation: ±0.4%
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The SM72482/NOPB IC has the following pin configuration:

```

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| | --| Vout Vin|-- --| GND EN |-- --| FB NC |-- |___________| ```

• Vout: Output Voltage
• Vin: Input Voltage
• GND: Ground
• EN: Enable Pin
• FB: Feedback Pin
• NC: No Connection

Functional Features

• Adjustable Output Voltage: The SM72482/NOPB allows users to adjust the output voltage within a specified range, providing flexibility for different applications.
• High Efficiency: This voltage regulator IC offers high efficiency, minimizing power loss and maximizing energy utilization.
• Low Dropout Voltage: With a low dropout voltage of only 200mV at 500mA, it ensures stable operation even when the input voltage is close to the desired output voltage.
• Overcurrent and Thermal Protection: The IC incorporates overcurrent and thermal protection mechanisms, safeguarding the device and connected components from damage.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• Adjustable output voltage provides versatility for different applications.
• High efficiency reduces power consumption and heat generation.
• Compact SOP-8 package enables space-saving designs.
• Overcurrent and thermal protection ensure device safety.

Disadvantages

• Limited output current of up to 500mA may not be sufficient for high-power applications.
• Non-isolated design may require additional circuitry for isolation purposes in certain applications.

Working Principles

The SM72482/NOPB operates as a linear voltage regulator. It regulates the output voltage by comparing the feedback voltage (FB pin) with a reference voltage. The error amplifier adjusts the pass transistor to maintain a stable output voltage, compensating for changes in load and input voltage.

Detailed Application Field Plans

The SM72482/NOPB finds applications in various electronic devices, including but not limited to: 1. Battery-powered devices: Provides regulated voltage for portable electronics such as smartphones, tablets, and digital cameras. 2. Industrial equipment: Suitable for powering sensors, actuators, and control circuits in industrial automation systems. 3. Automotive electronics: Used in automotive infotainment systems, lighting controls, and other vehicle electronics. 4. Home appliances: Enables stable voltage supply for household appliances like refrigerators, air conditioners, and televisions.

Alternative Models

Here are some alternative models that can be considered as alternatives to the SM72482/NOPB: 1. LM317: A popular adjustable voltage regulator IC with similar characteristics and pin configuration. 2. LT1083: A high-current linear regulator offering adjustable output voltage and low dropout voltage. 3. LM1117: A low dropout voltage regulator available in various fixed output voltage options.

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

In conclusion, the SM72482/NOPB is a versatile voltage regulator IC that offers adjustable output voltage, high efficiency, and compact packaging. It finds applications in various electronic devices across different industries. While it has limitations in terms of output current and isolation, there are alternative models available to suit specific needs.