FAN5235QSCX

PMICs, or power management integrated circuits, are a vital part of a range of electronic circuits, used for regulating the power input and output within a device or circuit. Within the PMIC family, voltage regulators are among the most important components, split into linear, switching and special purpose regulators. The FAN5235QSCX is a product from Fairchild Semiconductor, and is classified as a special purpose voltage regulator, with applications across the consumer, industrial and automotive sectors.

FAN5235QSCX Applications

This Fairchild product is a highly integrated, DC-to-DC power management solution that is typically used in small-form factor system designs, including mobile communication equipment, networking, computing and consumer applications. It provides an ideal power management solution for space and thermal constrained systems that may require precise system regulation. The product can easily be applied to any application requiring dual channel output in a current, space or cost-effective manner.

Specific areas in which the FAN5235QSCX provides solutions include personal communication systems, notebook computers, tablets and consumer applications. It is also suitable for industrial applications including electric vehicle charging, enclosed LED lighting and any device requiring precise multi-output power management.

FAN5235QSCX Working Principle

The FAN5235QSCX is a single-chip, multi-output, PWM/PSM, DC-to-DC controller. The device provides a 6A I2C, serial interface to control two independent channel outputs, one set to 1.0V and the other to 1.8V. Both channels share a common preset voltage. The device can also be configured in a single channel mode, enabling the unit to be used as a direct replacement for a PCM3120.

The FAN5235QSCX achieves efficient power conversion using a proprietary advanced synchronous buck, or Fast PFM controller. This controller uses an internal loop, which is based on the error between the output voltage feedback and the requested voltage. In addition, in-depth compensation has been included to ensure that each output is precisely regulated and that any deviations from the target voltage are accurately compensated.

The FAN5235QSCX supports multiple protection features, helping to maximize system safety and reliability. These include over current protection, over and under voltage protection, over temperature protection, short circuit protection and soft start functions.

Conclusion

The FAN5235QSCX is a special purpose voltage regulator, providing a comprehensive power management solution in a concise, space saving form factor. It is suitable for a wide range of applications in the consumer, industrial and automotive sectors and offers several protection features to ensure system reliability. The Fast PFM controller and in-depth compensation ensure accurate and precise voltage regulation.