Maxim Integrated Switching Regulator, Surface Mount, 3.3 → 3.36V dc Output Voltage, 3 → 5.5V dc Input

±1% Output Accuracy
95% Efficiency
Internal PMOS and NMOS Switches
70mΩ On-Resistance at VIN = +4.5V
100mΩ On-Resistance at VIN = +3V
Output Voltage
+3.3V or +2.5V Pin-Selectable
+1.1V to VIN Adjustable
+3V to +5.5V Input Voltage Range
360μA (max) Operating Supply Current
< 1μA Shutdown Supply Current
Programmable Constant-Off-Time Operation
350kHz (max) Switching Frequency
Idle Mode Operation at Light Loads
Thermal Shutdown
Adjustable Soft-Start Inrush Current Limiting
100% Duty Cycle During Low-Dropout Operation
Output Short-Circuit Protection
16-Pin SSOP Package
Applications
+3.3V PC Card and CardBus Applications
+5V to +3.3V/+2.5V Conversion
CPU Daughter Card Supply
CPU I/O Supplies
Desktop Bus-Termination Boards
Notebook and Subnotebook Computers

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