SPX2815AT-L-3-3

Product Overview

Category

SPX2815AT-L-3-3 belongs to the category of voltage regulators.

Use

It is primarily used for regulating and stabilizing voltage in electronic circuits.

Characteristics

• Input Voltage Range: 4.5V to 28V
• Output Voltage: 3.3V
• Maximum Output Current: 1A
• Dropout Voltage: 0.6V (typical)
• Low Quiescent Current: 75µA (typical)
• Package Type: TO-252
• Operating Temperature Range: -40°C to +125°C

Package and Quantity

The SPX2815AT-L-3-3 comes in a TO-252 package, also known as DPAK (Discrete Package). It is a surface-mount package with three pins. The product is typically sold in reels or tubes containing multiple units.

Essence

The essence of SPX2815AT-L-3-3 lies in its ability to provide a stable output voltage of 3.3V while operating within a wide input voltage range.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage: 3.3V ±2%
• Output Current: Up to 1A
• Dropout Voltage: 0.6V (typical), 1V (maximum)
• Line Regulation: 0.02%/V
• Load Regulation: 0.04%/A
• Quiescent Current: 75µA (typical), 100µA (maximum)
• Ripple Rejection: 70dB (typical)
• Thermal Shutdown Protection: Yes
• Short Circuit Protection: Yes
• Package Type: TO-252 (DPAK)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The SPX2815AT-L-3-3 has three pins arranged as follows:

```

---

| | --| VIN GND |-- Pin 1: Input Voltage (VIN) --| VOUT NC |-- Pin 2: Output Voltage (VOUT) --| GND GND |-- Pin 3: Ground (GND) |___________| ```

Functional Features

1. Wide Input Voltage Range: The SPX2815AT-L-3-3 can accept input voltages ranging from 4.5V to 28V, making it suitable for a variety of applications.
2. Stable Output Voltage: It provides a regulated output voltage of 3.3V with a low dropout voltage, ensuring a stable power supply for connected devices.
3. Low Quiescent Current: With a quiescent current as low as 75µA, the regulator minimizes power consumption when the load is light.
4. Thermal Shutdown Protection: The device incorporates thermal shutdown protection, which prevents damage due to excessive temperature.
5. Short Circuit Protection: It features built-in short circuit protection, safeguarding the regulator and the connected circuitry.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• Stable output voltage ensures reliable operation of connected devices.
• Low quiescent current reduces power consumption.
• Thermal shutdown protection prevents overheating.
• Short circuit protection safeguards against potential damage.

Disadvantages

• Dropout voltage of 0.6V may limit its use in applications with tight voltage requirements.
• Maximum output current of 1A may not be sufficient for high-power applications.

Working Principles

The SPX2815AT-L-3-3 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the output voltage with a reference voltage and adjusting the pass transistor accordingly. When the input voltage exceeds the desired output voltage, the pass transistor reduces the excess voltage, maintaining a stable output. Conversely, if the input voltage drops below the desired output voltage, the pass transistor adjusts to compensate for the difference.

Application Field Plans

The SPX2815AT-L-3-3 finds applications in various electronic systems where a stable 3.3V power supply is required. Some potential application fields include:

1. Embedded Systems: It can be used in microcontroller-based systems, providing a reliable power source for digital circuits.
2. Communications Equipment: The regulator ensures a stable voltage supply for communication modules, such as Wi-Fi or Bluetooth modules.
3. Industrial Automation: It can be employed in industrial control systems, powering sensors, actuators, and other components.
4. Consumer Electronics: The regulator can be utilized in devices like set-top boxes, routers, or gaming consoles, ensuring consistent power delivery.

Alternative Models

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