Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Input voltage (V)

Required number input.

Output voltage (V)

Required number input.

Calculate linear regulator efficiency. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Efficiency (%)

The resulting efficiency returned as a number.

• Compact electronics formulas omit some combination of tolerances, temperature drift, bandwidth, loading, parasitics, noise spectrum, nonlinearity, clipping, calibration, layout, and device-specific limits. Typical datasheet values are not guaranteed limits.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• LDO Dropout Headroom

  Compute LDO dropout headroom as input minus the sum of output and dropout voltages; negative values indicate insufficient headroom.

• Regulator Dissipation

  Calculate linear regulator power dissipation.

• Accelerometer Voltage Output

  Calculate linear analog accelerometer voltage from zero-g voltage, sensitivity in volts per g, and signed acceleration in g.