FAN53200UC44X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53200UC44X is a digitally programmable synchronous step-down (buck) voltage regulator from onsemi's TinyBuck series. It delivers up to 5A output current with an input voltage range of 2.5V to 5.5V and adjustable output voltages between 600mV and 1.3875V. Operating at a fixed 2.4MHz switching frequency, the device integrates power MOSFETs in a compact WLCSP-20 package. Key electrical specifications include a quiescent current of 60µA and operation within a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Digitally programmable output voltage via I2C interface for flexible system configuration
• Integrated synchronous rectification with internal high-side and low-side power MOSFETs
• Compact WLCSP-20 footprint designed for space-constrained mobile applications

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics such as smartphones and tablets
• Wireless communication modules requiring efficient power conversion
• Embedded systems utilizing single-cell lithium-ion battery inputs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'UC44X' against official onsemi documentation to confirm pinout compatibility and thermal characteristics. Ensure that the required output voltage setting falls within the supported digital programming range. Confirm package availability through authorized distributors, as surface-mount components may have specific handling requirements during assembly.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a high-current buck converter is needed in a minimal footprint for portable devices. The integrated MOSFETs simplify design by reducing external component count compared to discrete solutions. Consider the 2.4MHz frequency for balancing efficiency and passive component size. Verify that the load profile remains within the 5A continuous current rating for reliable long-term operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to onsemi's TinyBuck family of digitally programmable regulators. These devices are engineered specifically for mobile phone and handheld equipment markets where board space is limited. The series emphasizes high integration and software-configurable parameters to accelerate product development cycles for consumer electronics manufacturers.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct cross-reference part numbers in onsemi's updated portfolio. Verify that any substitute maintains the WLCSP-20 package dimensions and pin assignment. Ensure the replacement supports the same 5A current capability and 2.5V-5.5V input range.