AP2121AK-1.8TRE1

Product Overview

Category

AP2121AK-1.8TRE1 belongs to the category of voltage regulators.

Use

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

Characteristics

• Package: The AP2121AK-1.8TRE1 comes in a compact surface-mount package.
• Essence: It is a low dropout voltage regulator with a fixed output voltage of 1.8V.
• Packaging/Quantity: The product is typically available in reels or tubes, with varying quantities depending on the supplier.

Specifications

The specifications of AP2121AK-1.8TRE1 are as follows:

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage: 1.8V
• Dropout Voltage: 200mV (typical)
• Maximum Output Current: 150mA
• Quiescent Current: 45µA (typical)
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.4% (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AP2121AK-1.8TRE1 has the following pin configuration:

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

Functional Features

The functional features of AP2121AK-1.8TRE1 include:

• Low dropout voltage: The regulator maintains 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, conserving power.
• Overcurrent protection: The regulator includes built-in protection against excessive current, safeguarding the circuitry.
• 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 even with low input voltages.
• Wide operating temperature range enables usage in various environments.
• Overcurrent protection enhances circuit reliability.

Disadvantages

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

Working Principles

The AP2121AK-1.8TRE1 operates based on a linear voltage regulation principle. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. This ensures that the output voltage remains constant despite variations in the input voltage.

Detailed Application Field Plans

AP2121AK-1.8TRE1 finds applications in various electronic devices and circuits, including but not limited to:

1. Battery-powered devices: Portable electronics such as smartphones, tablets, and wearable devices often require stable voltage regulation for optimal performance.
2. IoT devices: Internet of Things (IoT) devices, which rely on low power consumption, can benefit from the low quiescent current and compact size of this regulator.
3. Embedded systems: Microcontrollers, sensors, and other embedded systems often require precise voltage regulation to ensure reliable operation.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to AP2121AK-1.8TRE1 include:

1. AP2112AK-1.8TRE1: A similar voltage regulator with a fixed output voltage of 1.8V, but with a higher maximum output current of 300mA.
2. AP2204K-1.8TRE1: Another low dropout voltage regulator with a fixed output voltage of 1.8V, but with a smaller package size for space-constrained applications.
3. AP7361-1.8TRE1: A low dropout voltage regulator with a fixed output voltage of 1.8V and an adjustable output current up to 150mA.

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

In conclusion, the AP2121AK-1.8TRE1 is a voltage regulator that offers stable voltage regulation, low dropout voltage, and low quiescent current. It finds applications in various electronic devices and circuits, particularly those requiring precise voltage control. While it has limitations in terms of maximum output current and fixed output voltage, there are alternative models available to suit different needs.