OB OB5269BCPA

OB5269B is a highly integrated current mode PWM control IC with high voltage start up, optimized for high performance, low standby power consumption and cost effective offline flyback converter applications. The ‘Extended burst mode’ control greatly reduces the standby power consumption and helps the design easily to meet the international power conservation requirements.

• High voltage startup with short startup time and low standby current
• PWM switching frequency at normal operation is internally fixed and trimmed to a tight range
• Operates in extended ‘burst mode’ at no load or light load to minimize switching loss
• Complete protection coverage with auto - recovery including Cycle - by - Cycle current limiting (OCP), over load protection (OLP), brownout protection and VDD under voltage lockout (UVLO)
• Protections with latched shut down including over temperature protection (OTP), and VDD over voltage protection
• Excellent EMI performance with OnBright proprietary frequency shuffling technique
• Minimized tone energy at below 22KHZ to avoid audio noise during operation
• High Voltage Startup
• Power on Soft Start Reducing MOSFET Vds Stress
• Frequency shuffling for EMI
• Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power
• Audio Noise Free Operation
• Fixed 65KHZ Switching Frequency
• Comprehensive Protection Coverage:
  • VDD Under Voltage Lockout with Hysteresis (UVLO)
  • Cycle - by - cycle over current protection (OCP)
  • Overload Protection (OLP) with autorecovery
  • Brownout Protection with auto - recovery
  • Over Temperature Protection (OTP) with latch shut down
  • VDD Over voltage Protection(OVP) with latch shut down
• Intelligent AC off Detect with X - CAP discharge function (On - Bright patent)

• Offline AC/DC flyback converter for
• Battery Charger
• Power Adaptor
• Open - frame SMPS