AP2125AK-3.0TRG1

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PMIC - Voltage Regulators - Linear

AP2125AK-3.0TRG1 is a voltage regulator from Anpec Electronics. This regulator integrates a low dropout voltage regulator with a low quiescent current into an ultra small 3-pin SOT-23 package. This device employs an advanced proprietary control loop to offer high accuracy, low dropout and fast transient response over a wide input voltage range. It also features a low noise, ripple rejection and ultra low output voltage noise.

The AP2125AK-3.0TRG1 enables users to design intelligent power supply circuits that quickly responds to changing input voltage while maintaining tight regulation of the output voltage. This device is designed to be used in applications where very tight duty cycle, low dropout and transient speed performance are required. It is suitable for small form factor, portable and mobile applications.

Application Field and Working Principle

AP2125AK-3.0TRG1 is suitable for many small form factor and mobile applications such as Smartphones and Tablet PCs. This voltage regulator ensures a highly accurate, low noise, optimized power solution in battery-operated handheld, automotive, and portable electronics applications. It is also suitable for DC-DC conversion circuits.

The AP2125AK-3.0TRG1 is designed to operate with input voltages up to 6.25V, and the output voltage can be adjusted from 2.0V to 5.25V. The device can supply up to 2A output current with up to 95% efficiency. With a quiescent current of 50μA, it suits applications where a low total power consumption is a key factor. This regulator features an integrated low noise high PSRR advanced reference voltage for superior performance and accuracy in battery-operated applications. Its fast transient response and low output voltage noise are ideal for applications where a fast responding power supply circuit is needed.

The AP2125AK-3.0TRG1 voltage regulator consists of an internal N-channel power MOSFET, an internal error amplifier, and a current limit circuit. The internal error amplifier senses the output voltage and compares it to an internal reference voltage. It then generates an error voltage signal that is used to control the gate drive of the internal MOSFET. This control loop will drive the MOSFET until the output voltage is equal to the internal reference voltage. Additionally, the device also contains protection circuits such as over temperature protection (OTP) and over-current protection (OCP).

The AP2125AK-3.0TRG1 is a highly integrated voltage regulator that provides an optimized power solution for the demanding electronics market. It delivers a low dropout voltage, low quiescent current and fast transient response in an ultra small 3-pin SOT-23 package. This device offers high accuracy, low output voltage noise, and excellent PSRR. With its adjustable output voltage and high efficiency, it is suitable for small form factor, portable and mobile applications.

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