SM72238TD-3.3/NOPB

Product Overview

Category

SM72238TD-3.3/NOPB belongs to the category of voltage regulators.

Use

This product is used to regulate and stabilize voltage levels in electronic circuits.

Characteristics

• Input Voltage Range: 4.5V to 18V
• Output Voltage: 3.3V
• Maximum Output Current: 1A
• Dropout Voltage: 300mV at 1A
• Low Quiescent Current: 75µA
• Thermal Shutdown Protection
• Short Circuit Protection
• Small Package Size: SOT-223

Packaging/Quantity

The SM72238TD-3.3/NOPB is available in a standard SOT-223 package. It is typically sold in reels or tubes, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 4.5V to 18V
• Output Voltage: 3.3V ±2%
• Output Current: Up to 1A
• Dropout Voltage: 300mV at 1A
• Quiescent Current: 75µA
• Line Regulation: ±0.2%
• Load Regulation: ±0.4%
• Ripple Rejection Ratio: 70dB
• Operating Temperature Range: -40°C to +125°C
• Package Type: SOT-223

Pin Configuration

The SM72238TD-3.3/NOPB has the following pin configuration:

```

---

| | --| Vin GND |-- Pin 1 --| Vout NC |-- Pin 2 --| NC NC |-- Pin 3 --| EN NC |-- Pin 4 |___________| ```

Functional Features

• Wide input voltage range allows for flexibility in various applications.
• Low dropout voltage ensures efficient power conversion.
• Thermal shutdown protection prevents damage due to excessive heat.
• Short circuit protection safeguards the regulator and connected components.

Advantages

• Compact SOT-223 package enables space-saving designs.
• Low quiescent current minimizes power consumption.
• Excellent line and load regulation provide stable output voltage.
• High ripple rejection ratio ensures clean power supply.

Disadvantages

• Limited maximum output current of 1A may not be suitable for high-power applications.
• Dropout voltage of 300mV at 1A may cause a significant power loss in low input voltage scenarios.

Working Principles

The SM72238TD-3.3/NOPB is a linear voltage regulator that utilizes a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage from a voltage divider network. The pass transistor adjusts its resistance to maintain a constant output voltage, compensating for changes in input voltage and load conditions.

Detailed Application Field Plans

The SM72238TD-3.3/NOPB is commonly used in various electronic devices and systems, including:

1. Battery-powered devices: Provides stable voltage for microcontrollers, sensors, and other low-power components.
2. Industrial control systems: Ensures reliable power supply for PLCs, motor drivers, and communication modules.
3. Automotive electronics: Regulates voltage for infotainment systems, lighting controls, and engine management units.
4. Home automation: Used in smart thermostats, security systems, and IoT devices.
5. Consumer electronics: Enables consistent power delivery in audio/video equipment, gaming consoles, and portable devices.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the SM72238TD-3.3/NOPB are:

1. LM1117-3.3: A popular 3.3V linear voltage regulator with similar specifications and package options.
2. XC6206P332MR: Another 3.3V regulator available in a smaller SOT-23 package.
3. AP2112K-3.3TRG1: A low dropout voltage regulator with thermal shutdown protection.

These alternative models offer comparable performance and can be suitable replacements depending on specific application requirements.

Word count: 529 words