AL9902FDF-13

Overview

The AL9902FDF-13 is an offline LED driver IC from Diodes Incorporated, designed for high-voltage applications. It supports both linear and PWM dimming methods to regulate LED current. The device operates within a supply voltage range of 20 V to 500 V and delivers a constant output current of up to 400 mA. It integrates boost and buck topology capabilities, allowing flexibility in circuit design. The component functions at switching frequencies up to 300 kHz and includes protection features such as open LED detection. It is housed in a compact 12-lead DFN package suitable for surface mount technology.

Feature Summary

• Supports linear and pulse-width modulation dimming for precise light control
• Integrates open LED protection to enhance system reliability
• Operates with high input voltage ranges suitable for offline applications

Applications

• Offline LED lighting systems
• High-voltage LED driver circuits
• General illumination modules requiring dimmable control

Procurement Notes

Verify the specific package variant, as the AL9902 series includes different footprints like SOIC-16 and DFN. Confirm that the 12-lead DFN form factor matches your PCB layout requirements. Ensure the design accommodates the 500 V maximum input voltage rating. Check for any recent product change notifications regarding pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when a single-channel solution for high-voltage offline LED driving is required. It is appropriate for designs needing integrated dimming control without external logic. Consider the thermal performance of the DFN package relative to the expected power dissipation. Verify compatibility with the target LED string voltage against the adjustable output capability.

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 AL9902 variant specifically targets applications requiring robust protection and flexible dimming options. It complements other parts in the lineup by offering a balance of performance and integration level for standard LED fixtures.

Replacement Considerations

The AL9902S16-13 is a related part number within the same family but utilizes an SOIC-16 package instead of the DFN footprint. Designers must account for the physical size difference and pinout variations when substituting between these variants. No other direct cross-model replacements are confirmed in the provided documentation.