O2Micro OZ8022V
OZ8022V is a controller for Buck converter utilizing quasi-resonant conversion technology. The controller is implemented with a compensated voltage mode control to regulate the average LED current. The operation of the Buck converter is between the continuous mode and the discontinuous mode of the inductor current.FEATURES
● Quasi-resonant converter controller for high brightness LEDs● Supports high power factor for LED lighting applications
● Low start-up current and operating current to maximize conversion efficiency
● Voltage-mode control to simplify circuit design
● Under-voltage lockout with hysteresis
● Minimum off-time control for light-load operation maximizing efficiency
● Provides complete protection functions ¾ Maximum gate drive output clamp ¾ Over-voltage protection for IC bias voltage ¾ Cycle-by-cycle current limit at current sense ¾ LED short circuit protection ¾ Output over-voltage protection ¾ Internal over-temperature protection ORDERING INFORMATION Part Number OZ8022V Temp Range -40oC to +105oC Note 3, Page 4 Package SOT23-6 Lead-Free feature to maximize the operating efficiency. Cycle-by-cycle current limiting at the CS pin ensures a safe operation during short-circuit at the output. The driver output voltage is clamped to protect the external power MOSFET. The IC provides over-voltage and over-temperature protection features.