FAN5331SX_Q

Overview

The FAN5331SX_Q is a DC-DC boost regulator IC manufactured by onsemi, designed for LED driver applications. It operates with an input voltage range of 2.7V to 5.5V and provides a regulated output current of up to 1A. The device utilizes a fixed switching frequency of 1.6MHz to minimize external component size. It features an internal power switch and supports operation within a temperature range of -40°C to +85°C. The component is housed in a compact SOT-23-5 package.

Feature Summary

• Integrated high-efficiency boost topology for step-up voltage conversion
• Constant current regulation capability suitable for driving LEDs
• Compact surface-mount packaging for space-constrained designs

Applications

• LED backlighting drivers
• Portable electronic device illumination
• General-purpose boost converter circuits

Procurement Notes

Verify the obsolete status of this part number before inclusion in new designs. Confirm availability through authorized distributors as manufacturing may have ceased. Ensure compatibility with existing PCB footprints if replacing active components. Check for RoHS compliance documentation in official datasheets.

Selection Notes

Select this component for applications requiring a simple, low-pin-count boost solution for LED strings. Consider the 1.6MHz switching frequency when designing filter components. Evaluate thermal performance within the specified operating temperature range. Verify input voltage requirements align with the 2.7V minimum specification.

Part Context

This part belongs to onsemi's FAN533x series of power management ICs. It is categorized under Switching Voltage Regulators and specifically functions as a Boost Regulator. The series targets portable electronics and LED lighting applications requiring efficient power conversion in small form factors.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.