FAN2564UC25X

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The FAN2564UC25X is a low dropout (LDO) linear voltage regulator manufactured by Fairchild Semiconductor, designed for digital applications. It provides a fixed output voltage of 2.5V with a maximum output current of 300mA. The device operates within an input voltage range of 1.65V to 3.6V and features a typical dropout voltage of 100mV at full load. It offers high line regulation of 0.03%/V and load regulation of 10uV/mA, with a voltage accuracy of 1%. The component is housed in a WLCSP-4 package and supports surface mount installation. It functions within a temperature range of -40°C to +85°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides stable regulated output for digital logic circuits
• Operates with low input voltage requirements
• Features compact wafer-level chip scale packaging

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Digital circuit power supply regulation
• Portable electronic devices requiring low VIN operation
• Battery-powered systems needing efficient linear regulation

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the manufacturer origin as Fairchild Semiconductor or onsemi, noting that Fairchild's semiconductor division was acquired by onsemi. Confirm the specific suffix UC25X indicates the 2.5V fixed output variant. Check RoHS compliance status and ensure the WLCSP-4 package matches design constraints. Validate part authenticity through authorized channels due to potential legacy status.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 2.5V rail is required from a source between 1.65V and 3.6V. The 300mA capacity suits moderate digital loads. The WLCSP-4 package is ideal for space-constrained PCB layouts. Ensure the application does not exceed the thermal limits defined for the operating temperature range.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This LDO belongs to the FAN2564 series, which includes variants with different fixed output voltages such as 1.5V and 2.5V. The series is characterized by low noise and fast transient response suitable for sensitive digital components. The UC25X designation specifically identifies the 2.5V output version within this family.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct substitutes include other parts from the same FAN2564 series with identical pinouts but different output voltages if the voltage requirement changes. Cross-reference with onsemi equivalents if sourcing from the current manufacturer.