MAX1549 Datasheet (Maxim Integrated Products) - Fixed-Frequency Step-Down Controller

MAX1549, Fixed-Frequency Step-Down Controller

The MAX1549 dual pulse-width modulation (PWM) stepdown controller provides the high efficiency, excellent transient response, and high DC-output accuracy necessary for generating low-voltage chipset and RAM power supplies in notebook computers.

The controller employs a fixed-frequency, current-mode

MAX1549 Features

* differential current-sense inputs for accurately sensing the inductor current across an external current-sense resistor in series with the output to ensure reliable overload protection. Alternatively, the controller can provide overload protection using lossless inductor current-sensing methods, low