AP451SLA Integrated Circuits (ICs)

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The AP451SLA is a three-terminal linear regulated controller with performance features designed to replace non-current limiting devices like thermal fuse and discharge circuit. It is designed to directly drive a N-channel power MOSFET with a regulated voltage up to 45V and a regulated current of up to 1.5A. This linear regulated controller is suitable for applications such as high-efficiency low-dropout linear regulated Linear LED drivers, LED lighting, various battery-powered devices, and solar applications.

The AP451SLA is a linear regulator controller with a wide working voltage range from 3V to 45V. This wide voltage range makes it suitable for many low-power applications. It has two voltage regulation pins – VREF and CS – that can be programmed to adjust the output voltage from 0.475V to 45V. The VREF and CS pins are used to set the output voltage and current, respectively. The output voltage can be set from 0.475V up to 45V with a maximum current of 1.5A.

The AP451SLA utilizes a control loop to maintain the output voltage and current. The device monitors the voltage at the output pin of the MOSFET and adjusts its internal gate drivers accordingly. The control loop consists of an internal loop gain, which helps to keep the output voltage stable. In addition, the device also features a built-in over-current protection that limits the output current to 1.5A. This feature is especially useful in applications such as LED drivers.

The AP451SLA provides a high level of reliability and protection. It includes a built-in ESD protection that clamps the gate voltage at -12V in order to prevent any damage due to an ESD event. In addition, the device also features an over-temperature protection which limits the maximum junction temperature of the device. This ensures that the device is able to operate safely in harsh environmental conditions.

In addition, the AP451SLA features an under-voltage lockout that prevents the device from operating at an unstable output voltage. This functions to protect the load device from being damaged by low voltage. The device also features an over-voltage protection which prevents the output voltage from exceeding the programmed value. This ensures that the device is able to safely operate in high-voltage applications.

The AP451SLA is suitable for many low-power applications such as wireless charging, portable medical devices, and LED lighting. In addition, it is also compatible with many N-channel power MOSFETs that operate from 3V to 45V.

Overall, the AP451SLA is an ideal linear regulated controller for many different low-power applications. Its wide voltage range, current limiting and protection features make it a reliable and robust solution for many different types of applications. Whether you need a linear regulated controller for your wireless charging application or your LED lighting setup, the AP451SLA is the perfect choice.

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