AP2138R-1.2TRG1

Product Overview

Category

AP2138R-1.2TRG1 belongs to the category of voltage regulators.

Use

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

Characteristics

• Package: The AP2138R-1.2TRG1 comes in a compact SOT-23 package.
• Essence: It is a low dropout linear regulator with a fixed output voltage of 1.2V.
• Packaging/Quantity: The product is typically available in reels, with a quantity of 3000 units per reel.

Specifications

The specifications of AP2138R-1.2TRG1 are as follows:

• Input Voltage Range: 2.5V to 6V
• Output Voltage: 1.2V
• Dropout Voltage: 200mV at 150mA
• Maximum Output Current: 150mA
• Line Regulation: ±0.2%
• Load Regulation: ±0.4%
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AP2138R-1.2TRG1 has three pins:

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

Functional Features

The functional features of AP2138R-1.2TRG1 include:

• Low dropout voltage: The regulator can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
• Low quiescent current: The device consumes minimal current when in standby mode, resulting in improved power efficiency.
• Overcurrent and thermal protection: The regulator includes built-in protection mechanisms to prevent damage due to excessive current or temperature.

Advantages and Disadvantages

Advantages

• Compact package size allows for easy integration into space-constrained designs.
• Low dropout voltage ensures efficient regulation even with low input voltages.
• Excellent line and load regulation characteristics provide a stable output voltage under varying conditions.

Disadvantages

• Limited maximum output current of 150mA may not be suitable for high-power applications.
• Fixed output voltage of 1.2V restricts flexibility in certain designs requiring variable output voltages.

Working Principles

The AP2138R-1.2TRG1 operates based on the principle of linear voltage regulation. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. This allows it to maintain a constant output voltage despite variations in the input voltage or load conditions.

Detailed Application Field Plans

AP2138R-1.2TRG1 finds application in various electronic devices and systems, including:

1. Battery-powered devices: The low dropout voltage and low quiescent current make it suitable for portable electronics, such as smartphones, tablets, and wearable devices.
2. IoT devices: With its compact size and efficient regulation, it can be used in Internet of Things (IoT) devices that require stable power supply.
3. Industrial control systems: The regulator can be employed in industrial control systems where precise voltage regulation is crucial for reliable operation.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to AP2138R-1.2TRG1 are:

1. LM1117-1.2: A popular voltage regulator with a fixed output voltage of 1.2V.
2. MCP1700-1202E/TO: Another low dropout voltage regulator with a fixed output voltage of 1.2V.
3. TS2937CZ-1.2: A compact regulator with a fixed output voltage of 1.2V and low dropout voltage.

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

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