Pololu Adjustable 9-30V Step-Up/Step-Down Voltage Regulator S18V20AHV

This powerful step-up/step-down regulator efficiently produces an adjustable 9 V to 30 V output from input voltages between 3 V and 30 V while allowing a typical output current of up to 2 A when the input voltage is close to the output voltage and offering typical efficiencies of 80% to 90%. Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below the regulated voltage.

Dimensions

General specifications

Identifying markings

Notes:

1

Without included optional headers or terminal blocks. Height with terminal blocks installed is approximately 0.5″.

2

Without included optional headers or terminal blocks. Terminal blocks add 3.4 g.

3

Absolute maximum. Recommended maximum operating voltage is 30 V, and reverse voltage protection only works up to 30 V.

4

Under typical conditions, where the input voltage is close to the output voltage. Maximum output current can be higher when stepping down and lower when stepping up.

5

For input voltages up to 30 V.

6

Typical worst case (i.e. with VIN at 3 V and VOUT at 30 V). Quiescent current depends on the input and output voltages and is much lower for most of the input voltage range. The ENABLE pin can be used to reduce this to well under 1 mA.

File downloads

• Dimension diagram of the S18V20x Step-Up/Step-Down Voltage Regulator (309k pdf)

   

   

• 3D model of the S18V20x Step-Up/Step-Down Voltage Regulator (4MB step)

   

   

• Step-Up/Step-Down Voltage Regulator S18V20x drill guide (44k dxf)

  This DXF drawing shows the locations of all of the board’s holes.