DESCRIPTION

· The ISL1902 is a high-performance, critical conduction mode (CrCM) controller for AC mains to constant current conversion with PFC.

· Compatible with various single-ended topologies, including Boost, SEPIC, Flyback, and Forward converters.

· Supports both leading and trailing edge modulated AC mains dimmers, analog signal, and ambient light sensor controlled dimming.

· Features dual control loops for improved transient response and PFC.

· Ensures high-performance dimmable LED ballast designs.

FEATURES

· Excellent LED current regulation across line, load, and temperature.

· 0 - 100% dimming compatibility with leading-edge and trailing-edge dimmers.

· Configurable for PWM or DC Current Dimming Control.

· Dual control loops for PFC and fast transient response.

· Power factor correction up to 0.995 with less than 20% harmonic content.

· Critical Conduction Mode (CrCM) operation for high efficiency.

· Supports universal AC mains input.

· Includes in-rush protection, OVP, OTP, and UVLO.

· Operates from -40°C to +125°C, Pb-free (RoHS compliant).

APPLICATIONS

· Industrial and commercial LED lighting.

· Architectural lighting LED drivers.

· AC or DC input LED ballasts.