AL9901FDF-13

Overview

The AL9901FDF-13 is an offline LED driver IC from Diodes Incorporated, designed for universal high-voltage applications. It integrates a 500V power MOSFET and supports PWM dimming with Traic compatibility at 120Hz. The device operates in a buck topology with an input voltage range of 20V to 500V. It delivers a constant output current of 400mA and features a switching frequency of 300kHz. Packaged in a compact 12-DFN format, it is suitable for space-constrained lighting designs.

Feature Summary

• Integrates a high-voltage power MOSFET for simplified design
• Supports PWM dimming with Traic phase-cut compatibility
• Operates in buck topology for efficient step-down conversion

Applications

• Universal input LED lighting fixtures
• Offline AC/DC LED drivers
• High-voltage LED string illumination

Procurement Notes

Verify the specific suffix FDF against official Diodes Incorporated documentation to confirm pinout and thermal pad configuration. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit products. Confirm that the 12-DFN package dimensions align with your PCB footprint specifications before finalizing procurement.

Selection Notes

Select this component for applications requiring integrated high-voltage switching without external MOSFETs. The 400mA output current rating suits medium-power LED strings. Consider the 300kHz switching frequency for balancing efficiency and EMI performance. Verify that the Traic dimming capability matches the intended control infrastructure. Ensure the operating temperature range covers the expected environmental conditions.

Part Context

This part belongs to the AL99 series of LED drivers from Diodes Incorporated. The series focuses on cost-effective solutions for general lighting. The AL9901 variant specifically targets universal voltage inputs. It competes in the market for integrated offline LED controllers. The DFN package allows for compact board layouts compared to traditional SOIC options.

Replacement Considerations

Check for AL9901 variants with different package suffixes if mechanical fitment differs. Verify functional equivalence with other Traic-dimmable drivers from competing manufacturers. Ensure replacement parts maintain the same 500V rating and 400mA output capability.