MPDTH***10 Series
Adjustable Non-isolated 12/15-Amp
POLA DC/DC Converters
OUTPUT VOLTAGE ADJUSTMENT
The output voltage may be adjusted over a limited range by connecting an
external trim resistor (Rset) between the VoutAdjust (trim) pin and Ground.
The Rset resistor must be a 1/10 Watt precision metal film type, 1% accu-
racy or lower with low temperature coefficient, 100 ppm/°C. or better.
Mount the resistor close to the converter with short leads.
Vout
10 KΩ
In the tables below, the calculated resistance is given and an equivalent
using two series-connected standard value resistors. Do not exceed the
specified limits of the output voltage or the converter’s maximum power
rating when applying these resistors. Also, avoid high noise at the Vout-
Adjust input. However, to prevent instability, you should never connect any
capacitors from VoutAdjust to either Ground or Vout.
VoAdj pin
in
Error
Amplifier
Ground
in = 2.49 KΩ, MPDTH03010 and MPDTH05010
in = 1.82 KΩ, MPDTH12010
Figure 2. Vout Adjust Input Circuit
MPDTH03010WAS/WAH
MPDTH05010WAS/WAH
MPDTH12010WAS/WAH
Output
Calculated Rset
(KΩ)
Standard value
resistors
Output
Calculated Rset
Standard value
resistors
Output
Calculated Rset
(KΩ)
Standard value
resistors
Voltage
Voltage
(KΩ)
0.71
2.22
4.18
5.51
8.94
17.5
37.5
∞
Voltage
2.5 V.
2.0 V.
1.8 V.
1.5 V.
1.2 V.
1.0 V.
0.8 V.
2.22
4.18
5.51
8.94
17.5
37.5
∞
2 KΩ + 220Ω
3.9 KΩ + 270 Ω
5.1 KΩ + 390 Ω
8.2 KΩ + 750 Ω
16 KΩ + 1.5 KΩ
36 KΩ + 1.5 KΩ
Open
3.3 V.
2.5 V.
2.0 V.
1.8 V.
1.5 V.
1.2 V.
1.0 V.
0.8 V.
680 Ω + 30 Ω
2 KΩ + 220 Ω
3.9 KΩ + 270 Ω
5.1 KΩ + 390 Ω
8.2 KΩ + 750 Ω
16 KΩ + 1.5 KΩ
36 KΩ + 1.5 KΩ
Open
5.0 V.
3.3 V.
2.5 V.
2.0 V.
1.8 V.
1.5 V.
1.2 V.
0.29
1.99
4.33
8.18
11.51
24.85
∞
270 Ω + 20 Ω
2 KΩ
4.3 KΩ + 30 Ω
7.5 KΩ + 680 Ω
11 KΩ + 510 Ω
24 KΩ + 820 Ω
Open
0.8V
Vout - 0.8V
0.8V
Vout - 0.8V
0.8V
Vout - 1.2V
Rset (KΩ) = 10 KΩ x
- 2.49 KΩ
Rset (KΩ) = 10 KΩ x
- 2.49 KΩ
Rset (KΩ) = 10 KΩ x
- 1.82 KΩ
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MPDTH_10 Series.A04 Page 5 of 6
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