CS1615-FZZR

Overview

The CS1615-FZZR is a single-stage dimmable offline AC/DC controller designed for 120VAC line voltage LED applications. It features primary-side regulation, active power factor correction exceeding 0.9 PF, and constant-current output via flyback or buck-boost topologies. The device supports triac, trailing-edge, and digital dimmers with flicker-free performance down to near-zero light output. Key electrical parameters include a maximum supply voltage of 17 V, an operating frequency up to 200 kHz, and a power dissipation of 400 mW. It operates within a temperature range of -40°C to +125°C and offers tight LED current regulation better than ±5% with total harmonic distortion less than 20%.

Feature Summary

• Best-in-class compatibility with leading-edge TRIAC, trailing-edge, and digital dimmers
• Flicker-free smooth dimming from 0% to 100% matching incandescent S-curve
• Primary-side regulation with active power factor correction exceeding 0.9 PF
• Compliance with IEC61000-3-2 standards and NEMA SSL 6 dimming requirements

Applications

• Retro-fit LED lamps
• External LED drivers
• LED luminaries
• Commercial lighting

Procurement Notes

Verify the specific suffix (FZZR) against official Cirrus Logic documentation to confirm package type and tape/reel specifications. Confirm end-of-life status and availability through authorized distributors, as this component may be discontinued or subject to limited supply constraints. Ensure the selected variant matches the required 120VAC input specification and dimmer compatibility needs for the target application.

Selection Notes

Select the CS1615-FZZR for 120VAC line voltage applications requiring high dimmer compatibility and low THD. Choose this part over the CS1616 when operating in regions with 120VAC mains rather than 230VAC. Prioritize this controller for designs needing primary-side regulation to reduce component count while maintaining strict power factor correction and flicker-free performance across various dimmer types.

Part Context

The CS1615 belongs to the Cirrus Logic CS1615/CS1616 series of high-performance single-stage dimmable offline AC/DC controllers. This family provides cost-effective solutions for dimmable LED applications, offering unmatched compatibility with a wide range of dimmers including leading-edge, trailing-edge, and digital types. The series is designed to closely match the dimming performance of traditional incandescent light bulbs.

Replacement Considerations

The CS1615-FSZR is a documented substitute within the same product family, sharing identical functional characteristics but potentially differing in packaging or reel specifications. Verify pinout compatibility and thermal requirements when transitioning between these variants.