Sanken LC5556LD
The controller adapts the average current control method for realizing high power factors. The rich set of protection features helps to realize low component counts, and high performance-to-cost power supply.FEATURES AND BENEFITS
● PWM and quasi-resonant topology● Integrated on-time control circuit (it realizes high power factor by average current control)
● Integrated soft-start circuit (reduces power stress during start-up on the incorporated power MOSFET and output rectifier)
● Integrated bias assist circuit (improves startup performance, suppresses VCC voltage droop during operation, and allows use of low-rated ceramic capacitor on VCC pin)
● Integrated Leading Edge Blanking (LEB) circuit
● Integrated maximum on-time limit circuit
● Protection features: ▫ Overcurrent protection (OCP): pulse-by-pulse ▫ Overvoltage protection (OVP): latched shutdown ▫ Overload protection (OLP): latched shutdown ▫ Thermal shutdown (TSD): latched shutdown Package: 8-pin DIP
DESCRIPTION
LC5550LD series are PWM and quasi-resonant topology non-isolated buck LED driver ICs. They incorporate separate controller and power MOSFET chips, and are designed for input capacitorless applications.APPLICATIONS
● LED li...