TECHNICAL DATASHEET

Rev. D

LV12S15-150

(888) 597-WALL

www.wallindustries.com

Page 6 of 15

Note that while decreasing the output voltage, the

maximum output current still remains at 10A, and

while increasing the output voltage, the output

current is reduced to maintain a total output

power at 150 W.

Figure 4: Trim Up

Output Voltage Trim: (5V, 12V, 15V, and 20V Models)

The output is adjustable +/–10% of rated output voltage. To trim the output voltage down, place the trim resistor

between the Trim and -Rs pins (Figure 5). To trim the output voltage up, 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).

Table 2: Trim Equations for LV Series (5V, 12V, 15V, and 20V Models)

Vonom

U1

R1

Rlim RTH to +Rs

15.000

2.500

5.11

5.11 RTL to -Rs

Percent

Trim Low

Trim High

Trim

Vo

RTL

Vo

RTH

1%

14.850 500.78

15.150 2575.44 All in Kohms

2%

14.700 245.28

15.300 1297.94

3%

14.550 160.11

15.450 872.11

4%

14.400 117.53

15.600 659.19

5%

14.250

91.98

15.750 531.44

6%

14.100

74.95

15.900 446.27

7%

13.950

62.78

16.050 385.44

8%

13.800

53.66

16.200 339.81

9%

13.650

46.56

16.350 304.33

10%

13.500

40.88

16.500 275.94

(in Kohms)

lim

1

lim

1

1

1

R

V

V

V

R

RTL

R

V

V

V

R

V

V

U

V

V

R

RTH

o

onom

o

onom

o

o

onom

o

onom

o

−

−

⋅

=

−

−

⋅

−

−

⋅

⋅

=

(in Kohms)

Figure 5: Trim Down

Pins Facing Down

+Rs

Trim

-Rs

RTL

Pins Facing Down

+Rs

Trim

-Rs

RTH