LV12S26-150 Datasheet, PDF (6/15 Pages) Wall Industries,Inc. – Low Voltage DC-DC Converter 10-36 Vdc Input 26Vdc Output at 5.8A Half-Brick Package

Rev. C
TECHNICAL DATASHEET
LV12S26-150
Output Voltage Trim: (24V, 26V, and 28V Models)
The output is adjustable +/–10% of rated output voltage. To trim the output voltage up, place the trim resistor
between the Trim and –Rs pins (Figure 5). To trim the output voltage down, place the trim resistor between the
Trim and +Rs pins (Figure 4).
The value of the trim resistor with respect to the desired output voltage (Vo) can be derived from the following
formulas or looked up on the trim table (Table 2).
RTH
=
Vo
Vref
−Vref _−
Vref
− R lim
RH
RL
(in Kohms)
RTL
=
Vo − Vref
Vref _− Vo − Vref
− R lim
RL
RH
(in Kohms)
Figure 4: Trim Down
+V_out
+Rs
Pins Facing Down Trim
Figure 5: Trim Up
RTL
R_load
+V_out
+Rs
Pins Facing Down _Trim
-Rs
-V_out
-Rs
-V_out
RTH
R_load
Table 2: Trim Equations for LV Series (24V, 26V, and 28V Models)
Vonom Vref RH RL Rlim RTH to -Rs
26.000 2.495 24.00 2.55 8.25 RTL to +Rs
Percent
Trim
1%
2%
3%
4%
5%
6%
7%
8%
9%
10%
Trim Low
Vo RTL
25.740 2342.17
25.480 1100.90
25.220 711.89
24.960 521.71
24.700 408.96
24.440 334.34
24.180 281.31
23.920 241.68
23.660 210.95
23.400 186.41
Trim High
Vo RTH
26.260 203.60 All in Kohms
26.520 102.10
26.780 66.35
27.040 48.10
27.300 37.02
27.560 29.59
27.820 24.25
28.080 20.23
28.340 17.09
28.600 14.58
Note that while decreasing the output voltage, the
maximum output current still remains at 5.8A, and
while increasing the output voltage, the output
current is reduced to maintain a total output power
at 150 W.
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www.wallindustries.com
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