FAN53555UC05X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53555UC05X is a synchronous step-down switching regulator manufactured by onsemi. It operates with an input voltage range of 2.5 V to 5.5 V and provides a fixed output voltage of 0.9 V. The device supports a maximum output current of 5 A through a single output channel. It utilizes a digitally programmable architecture with a nominal switching frequency of 2.4 MHz. The component is housed in a compact 20-WLCSP package measuring 1.96 mm by 1.56 mm. It functions within a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture maintains high efficiency at low load currents.
• Digitally programmable control interface allows for precise output voltage adjustment.
• High-frequency operation enables the use of minimal external passive components.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient power management
• Embedded systems utilizing low-voltage digital logic
• Battery-powered equipment needing extended operational life

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status prior to integration. Ensure ESD handling protocols are followed during storage and assembly. Validate package marking against official datasheet specifications. Check for end-of-life notices or obsolescence warnings from the manufacturer.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model when a fixed 0.9 V output is required. Choose based on the 5 A continuous current capability. Consider the WLCSP-20 footprint for space-constrained designs. Verify compatibility with the 2.5 V to 5.5 V input supply range. Assess thermal requirements for the specific operating environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the FAN53555 series of TinyBuck regulators. The series features digitally programmable controls and synchronous buck topology. Other variants in the family offer different fixed or programmable output voltages while sharing similar electrical characteristics and packaging options.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the same product family. Verify that substitute parts match the 5 A output current and 2.4 MHz switching frequency requirements. Ensure the replacement maintains the 20-WLCSP package dimensions.