FAN53526UC84X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53526UC84X is a digitally programmable synchronous step-down regulator from onsemi. It operates with an input voltage range of 2.5 V to 5.5 V and delivers a continuous output current of 3 A. The device features a fixed switching frequency of 2.4 MHz, though it supports up to 3.4 MHz operation. Output voltage is digitally programmable via I²C interface, ranging from 600 mV to 1.39375 V in 6.25 mV steps. Quiescent current is typically 50 µA in PFM mode. It utilizes a 15-ball WLCSP package (1.310 mm x 2.015 mm) and functions within an operating 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 providing high efficiency across load ranges with automatic transition between PFM and fixed-frequency modes
• Integrated protection mechanisms including thermal shutdown, overload protection, and input undervoltage lockout

Voltage Regulators - DC DC Switching Regulators Applications

• ARM, Tegra, OMAP, NovaThor, ARMADA, and Krait processors
• LPDDR3 and LPDDR4 memory systems
• Smartphones, tablets, laptops, and handheld gaming devices

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix code against official datasheets to confirm the exact output voltage setting, as the UC84X designation indicates a fixed factory-programmed voltage rather than a generic programmable unit. Confirm package integrity for the 15-ball WLCSP format. Check for end-of-life status or obsolescence notices from onsemi before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for powering digital logic cores in mobile applications. The 3 A current capability suits mid-range processors. Ensure the system design accommodates the 2.4 MHz switching frequency for EMI management. Verify that the I²C bus speed requirements align with the controller's capabilities for voltage configuration.

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. The series emphasizes high power density through advanced packaging and efficient synchronous rectification. It serves as a key component in multi-rail power architectures for complex system-on-chip platforms.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible alternatives within the same FAN53526 series with different voltage suffixes if the fixed output does not match requirements. Evaluate newer generations of onsemi TinyBuck regulators for improved efficiency or updated packaging options.