FAN53501AUCX-P

Voltage Regulators - DC DC Switching Regulators Overview

The Fairchild Semiconductor FAN53501AUCX-P is a fixed-step-down DC-DC converter designed for portable applications. It accepts an input voltage range of 2.3 V to 5.5 V and provides a fixed output voltage of 1.0 V. The device supports a maximum output current of 600 mA. Operating with a high switching frequency, it utilizes a WLCSP package for compact surface-mount installation. The component functions as a synchronous buck regulator suitable for battery-powered systems requiring efficient power conversion within specified thermal limits.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous step-down topology for improved efficiency
• Fixed 1.0 V output configuration
• Compact WLCSP footprint for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics
• Mobile communication devices
• Battery-powered embedded systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'P' against official Fairchild documentation to confirm tape-and-reel packaging specifications. Ensure compatibility with standard WLCSP soldering profiles. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity. Check for RoHS compliance status in the latest datasheet revision. Confirm that the 1.0 V fixed output aligns with target load requirements before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.0 V rail is required from a single-cell lithium-ion or similar battery source. The high switching frequency allows for smaller external passive components compared to lower-frequency alternatives. Consider the 600 mA current limit for load demands. The WLCSP package is ideal for applications with strict board area constraints. Verify input voltage stability within the 2.3 V to 5.5 V range during operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the FAN5350x series of low-power DC-DC converters. The series is characterized by high efficiency and small form factors. The FAN53501 variant specifically offers a fixed 1.0 V output. Other variants in the family may provide different fixed voltages or adjustable outputs. The technology leverages synchronous rectification to minimize power loss in portable devices.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct equivalents such as the FAN53501AUxx series with different output voltages if voltage adjustment is needed. Verify pinout compatibility with existing PCB layouts. Ensure thermal performance matches the original design constraints. Consult official substitution guides for cross-brand alternatives with matching electrical characteristics.