DIODES Incorporated Voltage Regulators - DC DC Switching Regulators AP1538SG-13

The AP1538SG-13 is a step-down switching regulator from Quarktwin Technology Ltd. designed for applications requiring efficient voltage regulation. It operates with an input voltage range of 3.6V to 18V and can deliver an output current of up to 3A. The output voltage can be adjusted from 0.8V to the input voltage level, making it versatile for various power supply needs. This regulator features a PWM control circuit that allows for a duty cycle adjustment from 0% to 99%, with a typical oscillation frequency of 300KHz. It includes built-in protection features such as overcurrent protection, short circuit protection, and thermal shutdown, ensuring reliable operation under various conditions. The device also incorporates a soft-start function to minimize overshoot during startup. The AP1538SG-13 is packaged in an SOP-8L format, which is suitable for compact designs, and is compliant with RoHS standards, making it an environmentally friendly choice. It is particularly well-suited for applications in PC motherboards, LCD monitors, graphic cards, and other peripheral devices. However, it is noted that this product is not recommended for new designs.