FAN53526UC288X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53526UC288X is a digitally programmable synchronous step-down regulator from onsemi, operating within a 2.5 V to 5.5 V input voltage range. It delivers a continuous output current of 3 A with a fixed switching frequency of 2.4 MHz. The device features a digital I²C interface for precise voltage control, supporting an adjustable output range from 600 mV to 1.3938 V in 6.25 mV steps. It incorporates pulse frequency modulation (PFM) for light-load efficiency, maintaining a typical quiescent current of 50 µA. The component is housed in a compact 15-ball WLCSP package and operates reliably across a temperature range of -40 °C to +85 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Digitally programmable output voltage via I²C interface with flexible slew rate control
• Synchronous buck topology ensuring high efficiency across varying load conditions
• Integrated protection mechanisms including thermal shutdown and overload protection

Voltage Regulators - DC DC Switching Regulators Applications

• ARM, Tegra, OMAP, NovaThor, ARMADA, and Krait processors
• LPDDR3 and LPDDR4 memory systems
• Smartphones, tablets, and ultra-portable mobile PCs
• Hard disk drives and gaming devices

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix UC288X against the official datasheet to confirm the exact output voltage setting or configuration variant. Confirm availability status as end-of-life notices may apply. Ensure compatibility with I²C bus speeds up to 3.4 Mbps during system integration. Validate that the WLCSP-15 footprint matches the PCB layout requirements before finalizing procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for low-voltage core power applications. The 2.4 MHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Consider the PFM mode benefits for battery-operated devices requiring extended runtime. Ensure the design accommodates the specific 6.25 mV resolution provided by the digital programming interface.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the TinyBuck® family of power management ICs designed for space-constrained portable electronics. It complements other onsemi regulators like the FAN53555 series, which offers higher current capabilities but different packaging. The FAN53526 specifically targets applications needing precise digital voltage adjustment rather than fixed output levels.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify if variants such as FAN53526UC168X meet the specific voltage requirements, noting potential differences in factory settings.