FAN53703UC48X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53703UC48X is a fixed-frequency synchronous buck converter from the onsemi FAN53703 series. It operates with an input voltage range of 2.3 V to 5.5 V and provides a fixed output voltage of 0.8 V. The device supports up to 3 A output current and features a switching frequency of 2.2 MHz. It includes integrated bootstrap diode, soft-start, and over-current protection. The component is housed in a 6-WLCSP package measuring 1.38 x 0.94 mm.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous step-down topology for high efficiency
• Integrated bootstrap diode simplifies external component count
• Fixed 2.2 MHz switching frequency enables compact passive selection

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics power management
• Embedded systems requiring low-voltage regulation
• Battery-powered devices needing efficient DC-DC conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'UC48X' against official datasheets to confirm the fixed 0.8 V output voltage variant. Ensure compatibility with 6-WLCSP 1.38x0.94 mm footprint requirements during PCB layout. Confirm RoHS compliance status through manufacturer documentation prior to integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 0.8 V output is required within a 2.3–5.5 V input range. The 2.2 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the 3 A current capability and WLCSP size constraints for space-sensitive designs.

Voltage Regulators - DC DC Switching Regulators Part Context

Part of the FAN53703 series of synchronous buck converters designed for portable applications. The series offers various fixed output voltages and current ratings. This specific model targets ultra-compact form factors with integrated protection features and high efficiency at light loads.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible substitutes within the FAN53703 family offering different fixed output voltages if system requirements change. Verify electrical parameter equivalence for input/output ranges and thermal performance before substitution.