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Maxim Integrated datasheets

MAX1842 Description

The MAX1742/MAX1842 constant-off-time, pulse-widthmodulated (PWM) step-down DC-DC converters are ideal for use in 5V and 3.3V to low-voltage conversion necessary in notebook and subnotebook puters.

MAX1842 Key Features

  • ±1% Output Accuracy
  • 95% Efficiency
  • Internal PMOS and NMOS Switches
  • Output Voltage 2.5V, 1.8V, or 1.5V Pin Selectable 1.1V to VIN Adjustable
  • 3V to 5.5V Input Voltage Range
  • 600μA (max) Operating Supply Current
  • <1μA Shutdown Supply Current
  • Programmable Constant-Off-Time Operation
  • 1MHz (max) Switching Frequency
  • Idle-Mode Operation at Light Loads