The MAX761/MAX762CSA step-up switching regulators provide high efficiency over a wide range of load currents, delivering up to 150mA. A unique, current-limited pulse-frequency-modulated (PFM) control scheme gives the devices the benefits of pulse-width-modulated (PWM) converters (high efficiency with heavy loads), while using less than 110µA of supply current (vs. 2mA to 10mA for PWM converters). The result is high efficiency over a wide range of loads.
Applications
Flash Memory Programming
PCMCIA Cards
Battery-Powered Applications
High-Efficiency DC-DC Converters
Feature
♦ High Efficiency for a Wide Range of Load Currents
♦ 12V/150mA Flash Memory Programming Supply
♦ 110µA Max Supply Current
♦ 5µA Max Shutdown Supply Current
♦ 2V to 16.5V Input Voltage Range
♦ 12V (MAX761), 15V (MAX762) or Adjustable Output
♦ Current-Limited PFM Control Scheme
♦ 300kHz Switching Frequency
♦ Internal, 1A, N-Channel Power FET
♦ LBI/LBO Low-Battery Comparator
