AP2125KS-4.2TRG1

Product Overview

Category

AP2125KS-4.2TRG1 belongs to the category of voltage regulators.

Use

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

Characteristics

• Package: The AP2125KS-4.2TRG1 comes in a compact SOT-23-5 package.
• Essence: It is a low dropout linear regulator designed to provide a stable output voltage with minimal power dissipation.
• Packaging/Quantity: The product is typically sold in reels or tubes, with a quantity of 3000 units per reel.

Specifications

The AP2125KS-4.2TRG1 has the following specifications:

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage: 4.2V
• Dropout Voltage: 200mV at 100mA
• Output Current: Up to 150mA
• Quiescent Current: 75µA (typical)
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.4% (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The AP2125KS-4.2TRG1 has a total of five pins arranged as follows:

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Pin 1: VIN (Input Voltage) Pin 2: GND (Ground) Pin 3: EN (Enable) Pin 4: BYP (Bypass) Pin 5: VOUT (Output Voltage)

Functional Features

• Low Dropout: The AP2125KS-4.2TRG1 exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: The regulator has a low quiescent current, minimizing power consumption when the load is light.
• Thermal Shutdown Protection: It incorporates thermal shutdown protection to prevent damage due to excessive 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.
• Low quiescent current minimizes power consumption in standby or idle modes.
• Thermal shutdown protection prevents damage from overheating.

Disadvantages

• Limited output current capability (up to 150mA), which may not be sufficient for high-power applications.
• Narrow input voltage range (2.5V to 6.5V) restricts its use in certain scenarios.

Working Principles

The AP2125KS-4.2TRG1 operates as a linear voltage regulator. It regulates the output voltage by maintaining a constant voltage drop across the device, regardless of changes in the input voltage or load conditions. This is achieved through the use of internal feedback circuitry that adjusts the pass transistor's resistance to maintain the desired output voltage.

Detailed Application Field Plans

The AP2125KS-4.2TRG1 finds applications in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - IoT devices - Medical equipment - Industrial control systems

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the AP2125KS-4.2TRG1 include: - LM1117-4.2 - MCP1700-4.2 - TS2940-4.2

These models offer similar functionality and specifications, providing options for designers based on their specific requirements.

In conclusion, the AP2125KS-4.2TRG1 is a voltage regulator with a compact package, low dropout voltage, and low quiescent current. It finds applications in various electronic devices and systems, offering stable voltage regulation and thermal protection. Designers may also consider alternative models based on their specific needs.