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.
Key Features
- ±1% Output Accuracy
- 95% Efficiency
- Internal PMOS and NMOS Switches 90mΩ On-Resistance at VIN = 4.5V 110mΩ On-Resistance at VIN = 3V
- 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
