Integrated circuit MAXIM MAX1999 MAX1777 MAX1977

Integrated circuit MAXIM MAX1999 MAX1777 MAX1977

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Reference: CI-MAX1999

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4,07 €

Integrated circuit MAXIM MAX1999 MAX1777 MAX1977

Integrated circuit MAX1999 MAX1777 MAX1977, High-Efficiency, Quad Output, Main Power-Supply Controllers for Notebook Computers. dual step-down, switch-mode power-supply (SMPS) controllers generate logic-supply voltages in battery-powered systems. The MAX1999 include two pulse-width modulation (PWM) controllers, adjustable from 2V to 5.5V or fixed at 5V and 3.3V. These devices feature two linear regulators providing 5V and 3.3V always-on outputs


  • No Current-Sense Resistor Needed (MAX1999)
  • Accurate Current Sense with Current-Sense Resistor (MAX1777/MAX1977)
  • 1.5% Output Voltage Accuracy
  • 3.3V and 5V 100mA Bootstrapped Linear Regulators
  • Internal Soft-Start and Soft-Stop Output Discharge
  • Quick-PWM with 100ns Load Step Response
  • 3.3V and 5V Fixed or Adjustable Outputs (Dual Mode™)
  • 4.5V to 24V Input Voltage Range
  • Ultrasonic Pulse-Skipping Mode (25kHz min)
  • Power-Good (PGOOD) Signal
  • Overvoltage Protection Enable/Disable


  • 3- and 4-Cell Li+ Battery-Powered Devices
  • Notebook and Subnotebook Computers
  • PDAs and Mobile Communication Devices

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