CS1616-FSZR

Overview

The CS1616-FSZR is a single-stage dimmable offline AC/DC controller designed for LED lamps. It supports flyback, buck-boost topologies and features primary-side regulation with active power factor correction exceeding 0.9. The device enables flicker-free dimming from 0% to 100% using TRIAC, trailing-edge, or digital dimmers. It operates within a frequency range of 6kHz to 200kHz, with a supply voltage between 11V and 17V. The component is housed in a 16-SOIC package and functions at temperatures from -40°C to 125°C.

Feature Summary

• Provides smooth, flicker-free dimming across leading-edge TRIAC, trailing-edge, and digital dimmers
• Integrates primary-side regulation and active power factor correction for high efficiency
• Delivers tight constant-current output regulation with low total harmonic distortion
• Includes comprehensive protection features such as open circuit, short circuit, and overtemperature detection

Applications

• Dimmable LED lamp drivers
• Single-stage AC/DC power supplies for lighting
• Applications requiring incandescent-like dimming curves
• Lighting systems needing broad dimmer compatibility

Procurement Notes

Verify the obsolete status and lifecycle changes documented by Cirrus Logic. Confirm that the 16-SOIC package dimensions match the design requirements. Ensure compliance with IEC61000-3-2 standards for the specific application environment. Check for any recent product change notices affecting assembly or labeling before finalizing procurement plans.

Selection Notes

Select this controller for applications requiring seamless integration with existing TRIAC and digital dimmers without external auxiliary power supplies. It is suitable for designs prioritizing cost-effectiveness and high power factor. Consider the 16-SOIC footprint and thermal management capabilities when evaluating board space constraints and operating temperature ranges.

Part Context

The CS1616 belongs to a family of high-performance offline controllers developed by Cirrus Logic. It complements similar models like the CS1615, which targets 230VAC line voltage applications. These devices represent Cirrus Logic's approach to solving dimmer compatibility issues in LED lighting, offering a unified solution for various global voltage standards and dimmer types.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The CS1615 is noted as a related model for different voltage applications. Due to the obsolete status, alternative sourcing requires careful verification of technical equivalence and availability through authorized distributors.