AP139-20WL-7

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PMIC (Power Management IC) Voltage Regulators are one of the most important components in any electronic device, providing the optimized and stable levels of voltage and current power requirements. Among the many different types of Voltage Regulators, Linear are one of the most popular and widely used in many applications. The AP139-20WL-7 is a low power, step-down, non-synchronous buck regulator designed to efficiently regulate the output voltage.

The AP139-20WL-7 boasts a guaranteed output voltage accuracy of ±2%, fixed internal regulation voltage of 0.9V, and a maximum output power of 20W. It features a wide input voltage range of 3.6V to 28V, and a fixed output voltage range of 0.8V -13V. The AP139-20WL-7 also comes with an external compensation structure and offers multiple protections, including an over-current protection (OCP) and thermal overload protection (TSD).

The AP139-20WL-7 is based on a synchronous rectifier architecture, and employs a thermally compensated over-current protection (OCP) and thermal protection (TSD) monitoring circuits to ensure excellent temperature stability and accuracy. The AP139-20WL-7 also has a fast transient response with a typical rise time of 11 us for 3% deviation in the output voltage. It also has an integrated frequency jittering function to reduce the in-rush current and improve its EMI performance. The AP139-20WL-7 operates at a fixed switching frequency of 200kHz and has a high efficiency of over 93%.

The AP139-20WL-7 is ideal for automotive, industrial, computer, and consumer applications, as it offers an excellent combination of high efficiency and power savings. It can be used to power medium-power automotive systems, including instrument clusters, HMI, displays, lighting systems, etc., and also industrial and consumer applications, such as home appliances, printers, networking equipment, DVD players, and more.

The working principle of the AP139-20WL-7 is simple. When power is applied to the input, the integrated high-side DMOS switch and the integrated low-side DMOS switch turn on, and the output voltage is regulated via a feedback loop. The voltage feedback loop maintains the output voltage at the desired level despite changing load conditions and input voltages. To ensure stable operation, the AP139-20WL-7 also features a frequency jittering function which helps reduce in-rush current and EMI.

Overall, the AP139-20WL-7 is an excellent and reliable Linear Voltage Regulator ideal for various applications. It offers a wide input voltage range and excellent output voltage accuracy, as well as fast transient response and high efficiency. The AP139-20WL-7 also offers multiple protections, including over-current protection and thermal overload protection, and a frequency jittering feature to reduce in-rush current and improve its EMI performance.

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