OB2269CP ,Current Mode PWM Controller, 36V, SOP-8

The OB2269CP is a current mode PWM controller designed for high-performance, low-standby power applications. It is optimized for offline flyback converters in AC/DC power supplies with power levels up to 20W. This controller provides efficiency improvements with its extended burst mode control, and it integrates comprehensive protection features such as over-voltage, over-temperature, and over-current protection with auto-restart capability.

The IC includes programmable PWM switching frequency, leading-edge blanking, and internal slope compensation, making it ideal for applications such as laptop power adapters, battery chargers, and open-frame power supplies. It is packaged in a SOP-8 package, ensuring compact design for surface-mount applications.

Key Features :

• Extended Burst Mode Control: Minimizes power consumption during light or no-load conditions for high efficiency.
• Low Startup and Operating Current: Ensures low standby power consumption, with startup current at 4µA and operating current at 2.3mA.
• Complete Protection Coverage: Includes over-voltage, over-current, and over-temperature protection with auto-restart functionality.
• Internal Slope Compensation: Enhances system stability and reduces sub-harmonic oscillation at high PWM duty cycles.
• Leading-Edge Blanking: Reduces glitches on current sensing input and improves overall system reliability.
• Programmable PWM Switching Frequency: Allows external control of the PWM switching frequency for design flexibility.