Description
R2A20115 is a power-factor correction (PFC) controller IC, which employs continuous conduction mode as PFC control mode. Various kinds of functions such as constant power limit, overvoltage detection, overcurrent detection, soft start function, feedback-loop open detection, and the function holding its operation through momentary outage (PFC hold function) are incorporated in a single chip. These functions reduce external circuitry.

FEATUREs
• Maximum ratings
   ⎯ Power-supply voltage Vcc: 24 V
   ⎯ Operating junction temperature Tjopr: – 40 to 150°C
• Electrical characteristics
   ⎯ VREF output voltage VREF: 5.0 V ± 1.6%
   ⎯ UVLO operation start voltage VH: 10.4 ± 0.7 V
   ⎯ UVLO operation stop voltage VL: 8.9 ± 0.5 V
   ⎯ PFC output maximum ON duty Dmax-out: 95% (typ.)
• Functions
   ⎯ Constant power limit function
   ⎯ Continuous conduction mode
   ⎯ Hold function of PFC operation on momentary outage (PFC hold function)
   ⎯ Overvoltage detection
   ⎯ Overcurrent detection
   ⎯ Soft start
   ⎯ Feedback loop disconnection detection
   ⎯ IC shutdown function
   ⎯ Dynamic OVP (Over Voltage Protection)
   ⎯ Package lineup: SOP-16

APPLICATIONs
• Flat panel display
• Projector
• Desktop PC
• White goods