AP1512A-12K5L-13

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AP1512A-12K5L-13 is a DC DC Switching Regulator from the voltage regulator family of PMIC (Power Management Integrated Circuits). It is a Step down converter with fixed output voltage, programmable current limit and soft start feature.

DC-DC switching regulators are voltage regulating devices that convert a DC input voltage to a lower DC output voltage. AP1512A-12K5L-13 is a high efficiency step down DC-DC converter with high current limit and very low output ripple. It has very low output noise which is also very important in applications that require high performance.

AP1512A-12K5L-13 is capable of providing up to 3.5A output current and offers ±1.5% regulated output voltage at 12V. It is designed for voltage step down applications in industrial, communications and consumer electronic applications. It has a frequency range of 100kHz to 500kHz, high efficiency and operates at low temperatures for very low output noise.

AP1512A-12K5L-13 working principle is based on a continuous conduction mode (CCM) PWM controller with an integral power stage. The power stage is formed by two Mosfets, one high side and one low side, which act as a low-side switch. The high side switch is external. The power stage is activated and deactivated with a PWM signal. The two Mosfets are switched in such a way that the average output voltage is controlled.

The current limit is set by the pulse width modulator (PWM) and is adjustable by a digital potentiometer. The current limit reduces the output current by limiting the Mosfet turn on times and therefore the input current. The current limit ensures that the input power is not exceeded while providing the necessary output voltage.

AP1512A-12K5L-13 also has a soft start function which controls the output voltage by reducing the average output voltage for a period of time after powered on. This feature allows the device to power up without large inrush currents and without over-stressing the output voltage.

AP1512A-12K5L-13 is used in a variety of different applications, including LED drivers, LED lighting, consumer electronic products, industrial equipment, home appliances, power tools, medical equipment, automotive electronics, telecommunication equipment and various other electronic devices. It is capable of providing the required output voltage and current with very low ripple and noise. The integrated soft start feature and adjustable current limit protect the device from over-voltage and over-current conditions preventing any damage to the device.

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