OB2276A
Overview
- Power on Soft Start Reducing MOSFET Vds PWM control IC optimized for high performance, Stress low standby power and cost effective offline
- Frequency shuffling for EMI flyback converter applications.
- Extended Burst Mode Control For Improved PWM switching frequency at normal operation is Efficiency and Minimum Standby Power internally fixed and is trimmed to tight range. At no Design load or light load condition, the IC operates in
- Audio Noise Free Operation extended ‘burst mode’ to minimize switching loss.
- Fixed 65KHZ Switching Frequency Lower standby power and higher conversion
- Comprehensive Protection Coverage efficiency is thus achieved. o VDD Under Voltage Lockout with VDD low startup current and low operating current Hysteresis (UVLO) contribute to a reliable power on startup and low o Cycle-by-cycle over current threshold standby design with OB2276A. setting for constant output power limiting OB2276A offers complete protection coverage with auto-recovery including Cycle-by-Cycle to current limiting (OCP), over load protection (OLP), Brownout protection, VDD over voltage protection (OVP), over temperature protection (OTP), output l over voltage protection and VDD under voltage tia lockout (UVLO). Excellent EMI performance is achieved with On-Bright proprietary frequency shuffling technique.
- The tone energy at below 22KHZ is minimized in the design and audio noise is eliminated during e operation. OB2276A is offered in SOP8 package. On-Bright Confid TYPICAL APPLICATION over universal input voltage range o Overload Protection (OLP) with auto- recovery o Brownout Protection with auto-recovery o VDD OVP with auto-recovery o Over Temperature Protection with auto- recovery o Output Over Voltage Protection with auto- recovery
