9V, 2.3A Step-Down Voltage Regulator D24V22F9 Pololu 2861

9V, 2.3A Step-Down Voltage Regulator D24V22F9 Pololu 2861 This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 36 V and efficiently reduces it to 9 V. The board measures only 0.7” × 0.7” yet delivers a typical continuous output current of up to 2.3 A and features reverse voltage protection. Typical efficiencies of 90% to 95% make this regulator well suited for powering moderate loads like sensors or small motors. An optional shutdown pin enables a low-power state with a current draw of around 40 μA to 350 μA, depending on the input voltage, and a power-good output indicates when the regulator cannot adequately maintain the output voltage.
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 below for more information on dropout voltage)
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 current: >2 A
Typical efficiency of 85% to 95%, depending on input voltage, output voltage, and load
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
“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
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