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BL8891B
Current Mode PWM Power Switch Freq Shuffling
GENERAL DESCRIPTION
BL8891B combines a dedicated current mode PWM controller with a high voltage power MOSFET. It is optimized for high performance, low standby power, and cost effective off-line flyback converter applications.
BL8891B offers complete protection coverage with automatic self-recovery feature including Cycle-by-Cycle current limiting (OCP), over load protection (OLP), VDD over voltage clamp and under voltage lockout (UVLO). Excellent EMI performance is achieved with proprietary frequency shuffling technique together with soft switching control at the totem pole gate drive output.
The tone energy at below 20KHZ is minimized in the design and audio noise is eliminated during operation.
BL8891B is offered in DIP-7 package.
BL8891B Datasheet
