4.7 Adjustable Regulator Design

The MIC37252 allows programming of the output voltage anywhere between 1.24V and the 5.5V maximum operating rating of the family. Two resistors are used. Resistors values are recommended to be less than 10kΩ in value to improve stability. The resistor values can be sized to draw the mini-mum load current for this device. The resistor values are calculated by:

$R1 = R2 \times \left(\frac{V_{OUT}}{1.240} - 1\right)$

Where:

• V_OUT is the desired output voltage

The following figure shows component definition. Applications with widely varying load currents may scale the resistors to draw the minimum load current required for proper operation.