Pololu 3.3V, 2.6A Step-Down Voltage Regulator D24V22F3

3.500 KD

The D24V22Fx family of step-down voltage regulators generates lower output voltages from input voltages as high as 36 V. They are synchronous switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters) with typical efficiencies of 85% to 95%, which is much more efficient than linear voltage regulators, especially when the difference between the input and output voltage is large. These regulators can typically support continuous output currents between 1.4 A and 2.6 A, though the actual available output current is a function of the input voltage and efficiency.

These regulators have a typical quiescent (no load) current draw of around 1 mA, and an enable pin can be used to put the boards in a low-power state that reduces the quiescent current to approximately 5 µA to 10 µA per volt on VIN.

The modules have built-in reverse-voltage protection, short-circuit protection, a thermal shutdown feature that helps prevent damage from overheating, and a soft-start feature that reduces inrush current.

Features

  • Input voltage:
    • 4 V to 36 V for the version that outputs 3.3 V
    • [output voltage + dropout voltage] to 36 V for output voltages of 5 V and higher (see the dropout voltage section for details)
  • Fixed 3.3 V, 5 V, 6 V, 7.5 V, 9 V, or 12 V output (depending on regulator version) with 4% accuracy
  • Typical maximum continuous output currents between 1.4 A abd 2.6 A (see the maximum continuous output current graph below)
  • Typical efficiency of 85% to 95%, depending on input voltage, output voltage, and load (see the efficiency graph below)
  • Switching frequency: ~400 kHz
  • Integrated reverse-voltage protection, over-current protection, over-temperature shutoff, and soft-start
  • 1 mA typical no-load quiescent current; this can be reduced to approximately 5 µA to 10 µA per volt on VIN by disabling the board (see the quiescent current graph below)
  • “Power good” output indicates when the regulator cannot adequately maintain the output voltage
  • Compact size: 0.7″ × 0.7″ × 0.31″ (17.8 mm × 17.8 mm × 8 mm)
  • Two 0.086″ mounting holes for #2 or M2 screws