This compact (0.4? 0.5?) switching step-down (or buck) voltage regulator takes input voltages up to 50 V and efficiently reduces them to 5 V while allowing for a maximum output current of 600 mA. It has a very low dropout, so it can be used with input voltages that are within a few hundred millivolts of its output. The pins have a 0.1? spacing, making this board compatible with standard solderless breadboards and perfboards.

Details:

• Input voltage: 5.2 V to 50 V (minimum input subject to dropout voltage considerations; see the dropout voltage section for details)
• Output voltage: 5 V with 4% accuracy
• Maximum output current: 600 mA (see the maximum continuous output current graph below)
• Fixed 2.1 MHz switching frequency
• High-voltage enable input can put the board into a low-power state where it draws less than 2 ?A (typical)
• Low quiescent current: < 0.1 mA (see the quiescent current graph below)
• Integrated over-temperature and over-current shutoff
• Small size: 0.5? 0.4? 0.1? (13 mm 10 mm 3 mm)
• Weight: 0.5 g