FAN53526UC224X

The FAN53526UC224X from ON Semiconductor is a highly efficient step-down (buck) switching voltage regulator designed for digital programmability. It operates from an input voltage range of 2.5V to 5.5V and can deliver a continuous output current of up to 3.0A. The output voltage is digitally programmable via an I2C interface, offering flexibility in power management.

This regulator features a fixed switching frequency of 2.4MHz, which helps reduce the size of external components. It utilizes synchronous rectification for high efficiency, exceeding 80% even at light loads. In light-load conditions, it can enter Power-Save Mode (PFM) with a typical quiescent current of 50µA. At higher loads, it automatically switches to fixed-frequency control. The device includes input under-voltage lockout (UVLO) and thermal shutdown protection for reliability.

The FAN53526UC224X is supplied in a compact 15-bump, 1.310 mm x 2.015 mm, 0.4 mm ball pitch WLCSP (Wafer-Level Chip Scale Package). This small footprint makes it suitable for space-constrained applications. The mounting type is surface mount, requiring appropriate soldering techniques for integration into PCBs.

Key features include a wide input voltage range, digitally programmable output voltage, I2C compatibility, and a high output current capability. It is well-suited for applications such as application, graphic, and DSP processors, hard disk drives, LPDDR3/4, tablets, smartphones, and gaming devices.