Pololu 5V, 600mA Step-Down Voltage Regulator D24V6F5

Overview: These step-down regulators generate lower output voltages from input voltages up to 42 V and have a typical efficiency between 80% and 90%, which is much more efficient than linear voltage regulators, especially when the difference between input and output voltage is large. The regulator is short-circuit proof and thermal shutdown prevents damage due to overheating. The board has no reverse polarity protection. Features: Input voltage: Output voltage + dropout voltage] to 42 V Fixed 3.3 V, 5 V, 9 V or 12 V output (depending on controller version) with 4% accuracy Maximum output current: 300 mA or 600 mA (depending on controller version) 1.25 MHz Switching frequency 2 mA Typical no-load quiescent current (20 µA Typical quiescent current with SHDN = LOW) Integrated overtemperature and overcurrent shutdown Small size: 0.5" × 0.4" × 0.1" (13 mm × 10 mm × 3 mm) Use of the controller Connections The buck controller has four connectors: Shutdown (SHDN), input voltage (VIN), ground (GND) and output voltage (VOUT). The SHDN pin can be operated low (below 0.3 V) to turn off the output and put the board in a low-power state that typically consumes 20 µA, and it can be operated high (above 2.3 V) to activate the board. The output voltage, VOUT, is fixed and depends on the controller version: The D24VxF3 version outputs 3.3 V, the D24VxF5 version 5 V, the D24VxF9 version 9 V and the D24VxF12 version 12 V. The four terminals are labeled on the back of the PCB and spaced 0.1" along the board edge to ensure compatibility with solderless PCBs, connectors and other prototyping arrangements with a 0.1" pitch. You can solder wires directly to the board or solder either the straight 4×1 pin header or the supplied right-angle 4×1 pin header.