OB2202 Datasheet | On-Bright

OB2202 Quasi-Resonant Flyback PWM Controller GENERAL DESCRIPTION Features OB2202 is a highly integrated Quasi-Resonant (QR) - Multi-Mode Operation controller optimized for high performance offline - Quasi-Resonant Operation at Normal Loading flyback converter applications. - Pulse Frequency Modulation (PFM) Operation at At normal load condition, it operates in QR mode Light Load with minimum drain voltage switching. To meet the - Programmable Brownout Protection and Line CISPR-22 EMI starting at 150KHz, the maximum OVP Protection switching frequency is internally limited to 130KHz. It operates in PFM mode for high power conversion a efficiency at light load condition. When the loading is very small, the IC operates in ‘Extended Burst Mode’ n to minimize the switching loss. As a result, lower standby power consumption and higher conversion o efficiency can be achieved. B OB2202 offers prehensive protection coverage including Cycle-by-Cycle Current Limiting, VCC Under Voltage Lockout(UVLO), Programmable to Output Over Voltage Protection(OVP), VCC Clamp, Gate Clamp, Over Load Protection(OLP), On-chip l Thermal Shutdown, Programmable Soft Start, Programmable Brownout Protection, Programmable tia Over Power Protection (OPP) pensation, and External Latch Triggering, Max On-time Limit, etc. fiden OB2202 is offered in SOP-8 and DIP-8 packages. - Burst Mode at No Load - Excellent OPP pensation - 20KHz Minimum Frequency Limit at QR Mode - 130KHz Maximum Frequency Limit - Internal Minimum T_off for Ringing Suppression - 35us Maximum On Time Limit - 50us Maximum Off Time Limit - Internal Leading Edge Blanking - Programmable Soft-start - Cycle-by-cycle Current Limiting - External Latch Triggering - Internal Thermal Shutdown - 1A Peak Current Sink/Source Capability - Programmable Output OVP APPLICATIONS...