Step-Down Voltage Regulator D24V6AHV

Product Code
:
11757
Brand / Origin
:
Pololu
Quantity
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10+
Without Vat
:
55.29 TL
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  • D24V6AHV Step-Down Voltage Regulator Board regulates voltage values from 4.5 V - 42 V to 4 V - 25 V. It's output current is 600mA.
    It can also be named as Switched Mode Power Supply or DC-DC Converter.
    Output voltage can be set via the potentiometer on the board. The output power can not be higher than input voltage. The regulator has short-circuit protection, and thermal shutdown prevents damage from overheating. The board does not have reverse-voltage protection.

    Features

    • input voltage: 4.5 V to 42 V (note: the input voltage should be at least a few volts above the output voltage)
    • output adjustable from 4 V to 25 V
    • maximum output current of 600 mA
    • 500 kHz switching frequency
    • 2 mA typical no-load quiescent current (20 μA typical quiescent current with SHDN = 0V)
    • integrated over-temperature and over-current shutoff
    • size: 15 × 10 × 4 mm
    • weight: 0.82 g


    Connections

    The buck regulator has four connections: shutdown (SHDN), input voltage (VIN), ground (GND), and output voltage (VOUT).

    The SHDN pin can be driven low (under 0.3 V) to turn off the output and put the board into a low-power state that typically draws 20 μA, and it can be driven high (above 2.3 V) to enable the board. If you do not need to use the shutdown feature, the SHDN pin can be directly connected to VIN to permanently enable the board. You should not leave this pin disconnected as this can result in unpredictable behavior.

    The input voltage, VIN, should be between 4.5 V and 42 V. If the input voltage gets too close to the output voltage, the output will start to drop, so you should ensure that VIN is at least a few volts above VOUT. You should also ensure that noise on your input does not exceed the 42 V maximum, and you should be wary of destructive LC spikes (see below for more information).

    The output voltage, VOUT, is determined by the trimmer potentiometer position. Setting the output voltage to be higher than the input voltage will not damage the board, but it will produce an oscillating output rather than a clean power rail (see the oscilloscope capture below), so we recommend you avoid setting the output voltage to be higher than the input voltage. The available output voltage range depends on your input voltage, VIN, and the regulator version you have: 2.5 V to 7.5 V (D24VxALV) or 4 V to 25 V (D24VxAHV). The maximum available output current also depends on your regulator version: 300 mA (D24V3Axx) or 600 mA (D24V6Axx). Exceeding the maximum output current can cause the output voltage to drop below its set value.

    Several graphs about the board:


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