LM2647
Overview
The LM2647 is an adjustable 200-500kHz dual channel voltage-mode controlled high-speed synchronous buck regulator controller ideally suited for battery powered applications such as laptop and notebook computers. The LM2647 requires only N-channel FETs for both the upper and lower positions of each synchronous stage.
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- Input voltage range from 5.5V to 28V Synchronous dual-channel Interleaved switching Forced-PWM or Pulse-skip modes Lossless bottom-side FET current sensing Adaptive duty cycle clamping High current N-channel FET drivers Low shutdown supply currents Reference voltage accurate to within ± 1.5% Output voltage adjustable down to 0.6V Power Good flag and Chip Enable Under-voltage lockout Over-voltage/Under-voltage protection Soft-start and Soft-shutdown Switching frequency adjustable 200kHz-500kHz
