LM27241 Synchronous Buck
Regulator Controller for Mobile Systems
May 2005
LM27241
Synchronous Buck
Regulator Controller for Mobile
Systems
General Description
The LM27241 is an adjustable 200kHz-500kHz single channel voltage-mode controlled high-speed synchronous buck
regulator controller.
It is ideally suited for battery powered applications such as laptop and notebook computers.
The LM27241 requires only N-channel FETs for both the upper and lower positions of the synchronous stage.
It features line feedforward to improve the response to input transients.
At very light loads, the user can choose between the highefficiency Pulse-skip mode or the constant frequency Forced-PWM mode.
Loss...