Pololu 5V, 2.5A Step-Down Voltage Regulator D24V25F5

Product Code
:
16352
Brand / Origin
:
Pololu
Quantity
:
2
Without Vat
:
67.45 TL
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  • This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 5 V. The board measures only 0.7″ × 0.7″, but it allows a typical continuous output current of up to 2.5 A. Typical efficiencies of 85% to 95% make this regulator well suited for powering moderate loads like sensors or small motors. High efficiencies are maintained at light loads by dynamically changing the switching frequency, and an optional shutdown pin enables a low-power state with a current draw of a few hundred microamps.

    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:
      • 5 V to 38 V for the version that outputs 3.3 V
      • [output voltage + dropout voltage] to 38 V for output voltages of 5 V and higher (see below for more information on dropout voltage)
    • Fixed 3.3 V, 5 V, 6 V, 7.5 V, or 9 V output (depending on regulator version) with 4% accuracy
    • Typical maximum continuous output current: 2.5 A
    • Integrated reverse-voltage protection, over-current protection, over-temperature shutoff, and soft-start
    • Typical efficiency of 85% to 95%, depending on input voltage and load; the switching frequency automatically changes at light loads to maintain high efficiencies
    • Typical no-load quiescent current under 1 mA; can be reduced to 10 µA to 20 µA per volt on VIN by disabling the board
    • Compact size: 0.7″ × 0.7″ × 0.35″ (17.8 mm × 17.8 mm × 9 mm)
    • Two 0.086″ mounting holes for #2 or M2screws

    Connections

    This buck regulator has five connection points for four different connections: enable (EN), input voltage (VIN), 2x ground (GND), and output voltage (VOUT).

    VIN: Positive supply pin (4.5V to 38V)

    VOUT: Voltage out pin on 5V

    Enable: The regulator is enabled by default: a 100 kΩ pull-up resistor on the board connects the ENABLE pin to reverse-protected VIN. If you do not need this feature, you should leave the ENABLE pin disconnected.

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