The CS1630/31 are high-performance dimmable LED drivers targeting high Color Rendering Index (CRI) LED replacement lamps and luminaires. The CS1630/31 feature Cirrus Logic’s proprietary digital dimmer compatibility control technology and digital correlated color temperature (CCT) control system that enables two-channel LED color mixing. The CS1630/31 integrate a boost converter, providing power factor correction and superior dimmer compatibility with a primary-side regulated second stage, which is configurable for isolated and non-isolated topologies.
The digital CCT control system provides the ability to program dimming profiles, such as constant CCT dimming and black body line dimming. The CS1630/31 optimize LED color mixing by temperature compensating LED current with an external NTC thermistor. The IC controller is also equipped with power line calibration for remote system calibration and end-of-line programming. The CS1630/31 provide a register lockout feature for security against potential access to proprietary OTP register settings. The CS1630 is designed for 120 VAC line voltage applications, and the CS1631 is optimized for 230 VAC line voltage applications.
| Part | Circuit Architecture | Output Stage Topology | Input Voltage |  Package |
|---|---|---|---|---|
| CS1630 | Dual-Stage Dual-Channel LED-String Color Mixing Control | Flyback; Buck; Tapped-Buck |
120 VAC | 16 SOIC |
| CS1631 | Dual-Stage Dual-Channel LED-String Color Mixing Control | Flyback; Buck; Tapped-Buck |
230 VAC | 16 SOIC |
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