Datasheet

WPMDB1400362Q / 171040302
MagI
3
C Power Module
VDRM – Variable Step Down Regulator Module
we-online.com Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 1.0
© May 2016 20/48
Step 2 Setting the operating frequency (f
SW
)
The switching frequency must be selected according to the input voltage, output voltage and load current for the best
performance in loop regulation and transient response.
Note: R
RT
open (f
SW
= 500 kHz) is only allowed under specific conditions (see table below)!
OPERATING
FREQUENCY
[kHz]
R
RT
[kΩ]
V
IN
= 5V V
IN
= 3.3V
I
OUT
= 0 to 1.5A I
OUT
> 1.5A I
OUT
= 0 to 2A
V
OUT
RANGE [V] V
OUT
RANGE [V] V
OUT
RANGE [V]
MIN MAX MIN MAX MIN MAX
500 open 0.8 1.4 0.8 1.0 0.8 2.2
550 3400 0.8 1.6 0.8 1.1 0.8 2.4
600 1800 0.8 1.8 0.8 1.2 0.8 2.5
650 1200 0.8 2.1 0.8 1.4 0.8 2.5
700 887 0.8 2.6 0.8 1.6 0.8 2.5
750 715 0.9 3.6 0.9 1.8 0.8 2.5
800 590 0.9 3.6 0.9 2.1 0.8 2.5
900 511 1.0 3.6 1.0 3.6 0.8 2.5
1000 348 1.2 3.6 1.2 3.6 0.8 2.5
1250 232 1.4 3.6 1.4 3.6 1.0 2.4
1500 174 1.7 3.6 1.7 3.6 1.1 2.3
1750 137 2.0 3.6 2.0 3.6 1.3 2.2
2000 113 2.3 3.4 2.3 3.3 1.5 2.2