Datasheet

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CUI Inc │ SERIES: VFK600 │ DESCRIPTION: DC-DC CONVERTER date 12/17/2013 │ page 7 of 8
Figure 3
External DC Voltage
APPLICATION NOTES (CONTINUED)
+S
+V
-V
-S
TRIM
Rt
Load
VR
Rt
Rt
Rt
Rt
Vf
+
×
+
+
×
×
=
33
33
7. 86
)
33
33
(
)
(
1. 42
VfVRVoVout ×+=)(
V
T
V O Vout ×=
Note: 1. All specications measured at nominal line, full load, and 25°C unless otherwise specied.
2. Output Voltage Trimming
Leave open if not used.
Figure 2
Trim-Up/Trim-Down Formulas
Trim-Up/Trim-Down Formulas
External Resistors
Note: Rt = 6.8 KΩ
V
O
is the nominal output voltage
V
OUT
is the desired output voltage (up or down)
VR is the trim resistor in KΩ
Note: V
T
is the trim terminal voltage
V
O
is the nominal output voltage
V
OUT
is the desired output voltage (up or down)
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