AP2122AK-3.0TRE1

PMIC - Voltage Regulators - Linear

AP2122AK-3.0TRE1 is a linear voltage regulator for PMIC (Power Management IC) applications.

Application Field

AP2122AK-3.0TRE1 is mainly applied in the switching power supplies of LED lighting, AC adapter, and the tablets. Also, it can be used in electricity automotive, power battery, and challenging applications that require strict output voltage accuracy of less than 0.05% or jitter of less than < 0.1%.

Working Principle

The AP2122AK-3.0TRE1 voltage regulator is based on a linear voltage regulation principle. It uses a transistor in its reference circuit, which is connected to the output voltage. The input voltage for the circuit is typically a high-voltage DC source, such as the main voltage from the outlet. When the input voltage increases, the transistor turns on and the reference voltage is decreased, allowing the output voltage to adjust to the correct level.

The main components of the AP2122AK-3.0TRE1 voltage regulator are two integrated circuits (ICs). The first is an Operational Amplifier (OP amp) which is used to control the output voltage. The second is a programmable voltage reference. This reference circuit is responsible for setting the output voltage, and is programmed with a power management IC (PMIC) to meet the need of the system.

The voltage reference circuit is connected to the negative side of the output voltage. When a load is connected to the output of the voltage regulator, it draws current. This current is sensed by the OP amp and is used to adjust the reference voltage, keeping the output voltage constant.

The AP2122AK-3.0TRE1 voltage regulator also features a power-saving standby mode, which reduces power consumption when the device is not in use. This is accomplished by reducing the bias voltage in the reference circuit, resulting in a lower power consumption.

The AP2122AK-3.0TRE1 is a highly accurate and reliable linear voltage regulator. It is capable of maintaining an output voltage that is accurately controlled to within 0.05% of the desired output voltage. This tight voltage regulation is essential in power supplies and other high-precision applications.