AP2121AK-2.8TRE1

Product Overview

Category

AP2121AK-2.8TRE1 belongs to the category of voltage regulators.

Use

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

Characteristics

• Package: The AP2121AK-2.8TRE1 comes in a compact SOT-23 package.
• Essence: It is a low dropout linear regulator designed for efficient voltage regulation.
• Packaging/Quantity: The product is typically packaged in reels, with a quantity of 3000 units per reel.

Specifications

The AP2121AK-2.8TRE1 has the following specifications:

• Output Voltage: 2.8V
• Dropout Voltage: 200mV (typical)
• Maximum Input Voltage: 6V
• Maximum Output Current: 150mA
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.4% (typical)
• Quiescent Current: 50µA (typical)

Detailed Pin Configuration

The AP2121AK-2.8TRE1 has three pins:

1. VIN (Pin 1): Input voltage pin.
2. VOUT (Pin 2): Output voltage pin.
3. GND (Pin 3): Ground pin.

Functional Features

• Low Dropout: The AP2121AK-2.8TRE1 operates with a low dropout voltage, ensuring efficient voltage regulation even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: With a quiescent current of only 50µA, this regulator minimizes power consumption in standby or low-load conditions.
• Overcurrent Protection: The device incorporates overcurrent protection, safeguarding the circuit from excessive current flow and potential damage.

Advantages and Disadvantages

Advantages

• Compact package size allows for easy integration into space-constrained designs.
• Low dropout voltage ensures efficient voltage regulation.
• Overcurrent protection enhances circuit reliability.

Disadvantages

• Limited maximum output current of 150mA may not be suitable for high-power applications.
• Input voltage limited to a maximum of 6V, which may restrict its use in certain scenarios.

Working Principles

The AP2121AK-2.8TRE1 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 AP2121AK-2.8TRE1 finds application in various electronic devices, including but not limited to: - Battery-powered devices - Portable audio players - Mobile phones - Wearable devices - IoT modules

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to AP2121AK-2.8TRE1 are: - LM1117-2.8 - MCP1700-2.8 - TS2937-2.8

These models offer similar voltage regulation capabilities and can be used as substitutes depending on specific requirements.

In conclusion, the AP2121AK-2.8TRE1 is a compact and efficient voltage regulator with low dropout characteristics. Its overcurrent protection and low quiescent current make it suitable for a wide range of applications. However, its limited maximum output current and input voltage restrictions should be taken into consideration when selecting this product for a particular design.