FAN53601AUC105X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53601AUC105X is a fixed-output synchronous buck regulator manufactured by Fairchild Semiconductor. It operates with an input voltage range of 2.3 V to 5.5 V and provides a fixed output of 1.05 V. The device supports a maximum output current of 600 mA and features a switching frequency of 6 MHz. Packaged in a compact 6-WLCSP format measuring 0.86 x 1.16 x 0.378 mm, it functions within a temperature range of -40 °C to +85 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification for improved efficiency in step-down conversion applications.
• Utilizes a high-frequency 6 MHz switching architecture to minimize external component size.
• Designed for surface-mount installation in space-constrained portable electronic devices.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring efficient power management
• Battery-powered mobile devices needing stable low-voltage rails
• Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer status carefully, as onsemi indicates this specific part number may be obsolete or subject to discontinuation. Confirm availability through authorized distributors and check for valid date codes. Ensure the WLCSP package type matches your PCB footprint requirements before finalizing procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.05 V output is required from a 2.3 V to 5.5 V input source. It is suitable for designs prioritizing small form factor due to the WLCSP package. Consider the 600 mA current limit and 6 MHz frequency when designing the external inductor and capacitor network for optimal transient response and stability.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the FAN53601 series of synchronous buck regulators. Variants within the series differ primarily by their fixed output voltage settings, such as the 1.0 V version (FAN53601AUC10X). The series shares common electrical characteristics including input voltage range, switching frequency, and package dimensions, allowing for design flexibility across different voltage rail requirements.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The FAN53601AUC10X is a functional substitute offering a similar profile but with a fixed 1.0 V output instead of 1.05 V. Verify that the slight voltage difference meets the load requirements. Other members of the FAN53601 family may serve as alternatives if output voltage adjustments are permissible.