AP2128K-2.8TRG1

Product Overview

Category

AP2128K-2.8TRG1 belongs to the category of voltage regulators.

Use

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

Characteristics

• Package: The AP2128K-2.8TRG1 comes in a compact surface-mount package.
• Essence: It is a low dropout linear regulator with a fixed output voltage of 2.8V.
• Packaging/Quantity: The product is typically packaged in reels or tubes, with varying quantities depending on the supplier.

Specifications

The specifications of AP2128K-2.8TRG1 are as follows:

• Input Voltage Range: 2.5V to 6V
• Output Voltage: 2.8V
• Dropout Voltage: 300mV (typical)
• Maximum Output Current: 150mA
• 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 AP2128K-2.8TRG1 has the following pin configuration:

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

Functional Features

• Low Dropout: The AP2128K-2.8TRG1 exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: With a low quiescent current, this regulator minimizes power consumption when the load is light.
• Overcurrent Protection: The device incorporates overcurrent protection, safeguarding the circuit from excessive current flow.
• Thermal Shutdown: In case of excessive temperature, the regulator shuts down to prevent damage.

Advantages and Disadvantages

Advantages

• Compact package size allows for space-saving designs.
• Low dropout voltage ensures efficient regulation.
• Overcurrent protection enhances circuit reliability.
• Thermal shutdown feature protects against overheating.

Disadvantages

• Limited maximum output current may restrict usage in high-power applications.
• Fixed output voltage may not be suitable for all voltage requirements.

Working Principles

The AP2128K-2.8TRG1 operates as a linear regulator, utilizing a pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The AP2128K-2.8TRG1 finds application in various electronic 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 low quiescent current of this regulator.
2. IoT devices: Internet of Things (IoT) devices often operate on low voltages and require efficient voltage regulation, making the AP2128K-2.8TRG1 suitable for these applications.
3. Automotive electronics: The regulator's wide operating temperature range and overcurrent protection make it suitable for automotive applications, such as infotainment systems and dashboard electronics.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to AP2128K-2.8TRG1 include:

1. LM1117-2.8: A popular linear regulator with similar specifications and a fixed output voltage of 2.8V.
2. MCP1700-2802E/TO: Another low dropout regulator with a fixed output voltage of 2.8V, offering comparable performance.
3. TPS78228DRVT: A high-performance regulator with a fixed output voltage of 2.8V, suitable for demanding applications.

In conclusion, the AP2128K-2.8TRG1 is a compact and efficient voltage regulator with a fixed output voltage of 2.8V. Its low dropout voltage, low quiescent current, and various protection features make it suitable for a wide range of electronic applications. However, its limited maximum output current and fixed output voltage should be considered when selecting an alternative model for specific requirements.