AT73C239

The AT73C239 is a high-performance integrated DC/DC converter power management IC (PMIC) specifically designed to offer a simple and cost effective solution for mobile and portable applications. It is a specialized PMIC in a power management device responsible for the provision in power supply, the regulation, and the measurement of the current in various applications.

The major application fields of the AT73C239 PMIC are in portable and mobile products such as digital still cameras, PDAs, cellular phones, smart phones and many others. AT73C239 also has applications in embedded systems and other automation systems.

The AT73C239 integrates an adjustable voltage regulator, two DC/DC converter outputs, a low dropout regulator, an exercise timer and LOW-E FET driver. The device is characterized by high efficiency (up to 92%), low quiescent current, wide output voltage range, fast switching times and precise control of the output voltage.

The working principle of AT73C239 is based on the same principles of all DC-DC converters. The input voltage is converted to a controlled output voltage that is adjustable and regulated by a proportional voltage regulator. The converter includes two stages – the power stage and the control stage. The power stage comprises of a high-efficiency, high-switching frequency switched mode power supply (SMPS) that converts the input voltage to a regulated output voltage. This is then fed to the control stage, which takes the converted output voltage and regulates it according to the input control reference.

The AT73C239 is also equipped with an exercise timer and Low-E FET driver to protect the circuit from high inrush current which may damage other components and overloading of the power supplies. This timer is triggered when the voltage regulator is not enabled and makes sure that the system is not damaged by the high inrush current.

The AT73C239 is a highly efficient, high quality and cost efficient DC/DC converter. Its specialized PMIC design offers a wide range of applications and stable output voltage control. It eliminates the need for complex and expensive external components making it a perfect choice for powering a wide range of mobile and portable devices.