FAN5361UC123X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN5361UC123X is a synchronous buck regulator from onsemi, operating at a fixed 6 MHz switching frequency. It delivers a fixed 1.23 V output with a maximum current capability of 600 mA. The device accepts an input voltage range from 2.3 V to 5.5 V and maintains a typical quiescent current of 35 µA. Designed for surface-mount installation, it utilizes a compact 6-WLCSP package measuring 1.23 x 0.88 mm. The component supports an ambient operating temperature range from -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification for improved efficiency in a minimal footprint
• Utilizes fixed-frequency operation to simplify external component selection
• Features low quiescent current consumption for extended battery life

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring space-constrained power solutions
• Battery-powered mobile devices needing efficient step-down regulation
• Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix UC123X to confirm the fixed 1.23 V output voltage variant. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Check for End-of-Life notices as availability may be restricted. Ensure the WLCSP-6 package dimensions align with the target PCB layout constraints.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.23 V output is required without external feedback resistors. The 600 mA output current suits moderate load applications. The 6 MHz frequency allows for smaller passive components compared to lower-frequency regulators. Verify that the 2.3 V minimum input voltage meets the system's lowest battery discharge level.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the FAN5361 series of TinyBuck synchronous regulators. It shares architectural similarities with other members like the FAN53611 but differs in output current and voltage options. The series targets ultra-small form-factor designs where board space is limited.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

FAN5361UC12X offers a similar 1.2 V output with 600 mA capability. FAN53611UC123X provides a higher 1 A output current with identical voltage and package.