AP2139AK-2.8TRG1

Product Overview

Category

AP2139AK-2.8TRG1 belongs to the category of voltage regulators.

Use

This product is primarily used for regulating voltage in electronic circuits.

Characteristics

• Package: The AP2139AK-2.8TRG1 comes in a compact SOT-23 package.
• Essence: It is a low dropout linear regulator with a fixed output voltage of 2.8V.
• Packaging/Quantity: The product is typically sold in reels, with each reel containing a specific quantity of units.

Specifications

The following are the specifications of AP2139AK-2.8TRG1:

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage: 2.8V (fixed)
• Dropout Voltage: 200mV at 100mA
• Output Current: Up to 300mA
• Quiescent Current: 75µA (typical)
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.4% (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AP2139AK-2.8TRG1 has the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. VOUT (Output Voltage)

Functional Features

The functional features of AP2139AK-2.8TRG1 include:

• Low dropout voltage, allowing efficient regulation even with small input-output differentials.
• Excellent line and load regulation, ensuring stable output voltage under varying conditions.
• Low quiescent current, minimizing power consumption when the device is idle.
• Thermal shutdown and current limit protection, safeguarding against excessive heat and current surges.

Advantages and Disadvantages

Advantages

• Compact package size enables space-saving designs.
• Fixed output voltage simplifies circuit design.
• Low dropout voltage ensures efficient power conversion.
• Wide input voltage range allows flexibility in various applications.

Disadvantages

• Fixed output voltage may limit its use in applications requiring adjustable voltages.
• Maximum output current of 300mA may not be sufficient for high-power applications.

Working Principles

The AP2139AK-2.8TRG1 operates as a linear regulator, utilizing a pass transistor to regulate the output voltage. It maintains a constant voltage drop between the input and output terminals, ensuring a stable output voltage even with varying input voltages and load conditions. The device adjusts the pass transistor's resistance to maintain the desired output voltage.

Detailed Application Field Plans

AP2139AK-2.8TRG1 finds application in various electronic devices and systems, including but not limited to:

1. Battery-powered devices: Portable electronics such as smartphones, tablets, and wearable devices benefit from the low dropout voltage and efficient power conversion provided by this voltage regulator.
2. IoT devices: Internet of Things (IoT) sensors and modules often require a stable voltage supply, making the AP2139AK-2.8TRG1 suitable for powering these devices.
3. Automotive electronics: With its wide input voltage range and compact package, this regulator can be used in automotive applications like infotainment systems, lighting controls, and sensor circuits.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to AP2139AK-2.8TRG1 include:

1. LM1117-2.8: A popular voltage regulator with a fixed 2.8V output voltage.
2. MCP1700-2.8: Another low dropout regulator providing a fixed 2.8V output.
3. TS2937-2.8: A voltage regulator with a fixed 2.8V output and low quiescent current.

These alternative models can be considered based on specific application requirements and availability.

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