Note: We recommend our newer 600 mA D36V6Fx family (PO3791 - PO3799) of step-down voltage regulators over this product. They offer a wider 4 V to 50 V operating voltage range and lower quiescent current, and they can generally be used as drop-in replacements for this product (they use the same PCB, just populated with different parts). Please also consider our 500 mA D24V5Fx (PO2840 - PO2847) and 1 A D24V10Fx (PO2830 - PO2834) families for synchronous alternatives that offer similar functionality with much lower dropout voltages and higher efficiencies at light loads. All of these newer families also have more output voltage options available.
These buck (step-down) voltage regulators generate lower output voltages from input voltages as high as 42 V. They are switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters) and have a typical efficiency between 80% to 90%, which is much more efficient than linear voltage regulators, especially when the difference between the input and output voltage is large.
The regulator has short-circuit protection, and thermal shutdown prevents damage from overheating. The board does not have reverse-voltage protection.
- Input voltage: [output voltage + dropout voltage] to 42 V (see below for more information on dropout voltage)
- Fixed 3.3 V, 5 V, 9 V, or 12 V output (depending on regulator version) with 4% accuracy
- Maximum output current: 300 mA or 600 mA (depending on regulator version)
- 1.25 MHz switching frequency
- 2 mA typical no-load quiescent current (20 µA typical quiescent current with SHDN= LOW)
- Integrated over-temperature and over-current shutoff
- Small size: 0.5? × 0.4? × 0.1? (13 mm × 10 mm × 3 mm)
- Size: 0.4? × 0.5? × 0.1?1
- Weight: 0.5 g1
- Minimum operating voltage: 6 V2
- Maximum operating voltage: 42 V
- Maximum output current: 300 mA
- Output voltage: 5 V
- Reverse voltage protection?: N
- Maximum quiescent current: 2 mA3
- PCB dev codes: reg04b
- Other PCB markings: 0J7034
- Without included optional headers.
- For small loads; input voltage must be at least 6.5 V to get the full 300 output.
- While enabled (SHDN = HIGH) with no load. Current draw is approximately 20 µA when SHDN = LOW.