Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
s
ecifications or transact the a
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.
2006.10.3
MPDKN1**S Application
7
8. To Adjust Output Voltage
When TRIM-pin (6pin) is left open, DC-DC Converter applies nominal output voltage.
Resistors connected between TRIM-pin(6pin) to SENSE(+)-pin (7pin) will increase the output voltage (Vo,adj)
between 100% ~ 110% of the nominal output voltage(Vo,nom). (Vout-Up control)
Resistors connected between TRIM-pin(6pin) to SENSE(-)-pin (5pin) will decrease the output voltage(Vo,adj).
(Vout-Down control)
MPDKN106S Adjustable Range : 90% ~ 100% of the nominal output voltage(Vo,nom)
Others Adjustable Range : 80% ~ 100% of the nominal output voltage(Vo,nom)
The following equations give the required external-resistor value to adjust the output voltage to Vo,adj.
After calculating external resistance, it is necessary to check the output voltage and to adjust of the resistance
value at your board conditions.
When you increase the output voltage,
When you decrease the output voltage,
Where,
If you change output voltage, it is necessary to evaluate the characteristics of DC-DC Converter at your
board conditions.
()
[]
Ω
ΔΔ
Δ
＝ k10.22-
(%)
100(%)5.11
-
(%)1.225
(%)100(%)Vo5.11
up-Radj
×
×
+×
[]
Ω
Δ
＝ k10.22-
(%)
100(%)5.11
down-Radj
×
(%)100
nomVo,
adjVo,-nomVo,
×=Δ
