MAX651 Datasheet (Maxim) - Step-Down DC-DC Controllers

MAX651, Step-Down DC-DC Controllers

The MAX649/MAX651/MAX652 BiCMOS, step-down DCDC switching controllers provide high efficiency over three decades of load current.

A unique, current-limited pulse-frequency-modulated (PFM) control scheme gives these devices the benefits of pulse-width-modulation (PWM) converters (high efficiency at h

MAX651 Features

* o o o o o o o More than 90% Efficiency (10mA to 1.5A Loads) More than 12.5W Output Power 100µA Max Quiescent Supply Current 5µA Max Shutdown Supply Current Less than 1.0V Dropout Voltage 16.5V Max Input Voltage 5V (MAX649), 3.3V (MAX651), 3V (MAX652), or Adjustable Output Voltage o Current-Limited C