FAN53200UC44X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53200UC44X is a digitally programmable step-down switching voltage regulator from onsemi, formerly Fairchild Semiconductor. It delivers a single positive output with a maximum current of 5A and operates at a fixed switching frequency of 2.4MHz. The device accepts an input voltage range typically centered around 3.6V, supporting a minimum input of 2.3V and a maximum of 4.5V. The output voltage is adjustable starting from a minimum of 0.6V. It features synchronous rectification for improved efficiency and is housed in a compact 20-UFBGA or WLCSP package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Digitally programmable output voltage allows precise configuration without external resistor dividers.
• Synchronous rectification design enhances power conversion efficiency across load conditions.
• Compact TinyBuck footprint minimizes printed circuit board area requirements.
• Integrated protection mechanisms ensure reliable operation under varying thermal and electrical loads.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring efficient power management
• Mobile communication devices needing compact voltage regulation
• Embedded systems utilizing low-voltage digital logic

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation carefully, as the component was originally produced by Fairchild Semiconductor and is now manufactured by onsemi following corporate restructuring. Ensure the ordering suffix matches the required package variant and temperature rating. Confirm RoHS compliance status through official documentation before procurement to meet environmental standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this regulator when a high-current 5A output is required in a minimal form factor. The fixed 2.4MHz switching frequency aids in filtering design compared to lower-frequency alternatives. Consider the digital programming interface if system flexibility for voltage adjustment is needed during production or field updates.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the TinyBuck family of regulators designed for space-constrained applications. It represents the transition period where Fairchild Semiconductor's power management portfolio was integrated into onsemi. The UC44X suffix indicates specific packaging and testing configurations within this product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct cross-reference models should be sought within the onsemi TinyBuck series. Verify pin compatibility and electrical specifications against legacy Fairchild datasheets. No alternative part numbers are explicitly confirmed in the provided source material for direct substitution.