Micrel, Inc.
Adjustable Regulator Application
The MIC5225YM5 can be adjusted from 1.24V to 14V by
using two external resistors (Figure 1). The resistors set
the output voltage based on the following equation:
VOUT = VREF(1 + (R1/R2)),
Where VREF = 1.24V.
Feedback resistor R2 should be no larger than 300kΩ.
VIN
1.0µF
MIC5225
MIC5225YM5
IN
OUT
EN
ADJ.
GND
VOUT
R1
2.0µF
R2
Figure 1. Adjustable Voltage Application
July 2008
8
M9999-072908-A