Maxim

MAX770 - Step-Up DC-DC Controller

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Features 90% Efficiency for 10mA to 1A Load Currents Up to 15W Output Power 110µA MAX Shutdown Current 5µA MAX shutdown Current 2V to 16.5V Input Range (MAX770/MAX771/MAX772) Internal Shunt Regulator for High Input Voltages(MAX773) Preset or Adjustable Output Voltages MAX770: 5V or Adjustable, MAX771: 12V or Adjustable, MAX772: 15V or Adjustable, MAX773: 5V, 12V, 15V, or Adjustable Current-Limited PFM Control Scheme 300kHz Switching Frequency

Pin Description Pin Number Description 1 EXT-Gate drive for external 2 V+ -Power-supply input 3 FB-Feedback input 4 SHDN-shutdown (Active High) 5 REF-Reference Output 6 AGND-Analog Ground 7 GND-Ground 8 CS-Positive input current-sense

Pin Layout Dimensional Drawing

Technical Data Data Sheet Maxim - Data Sheet for MAX770 Application Notes