PTH12030W/L
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SLTS211F–MAY 2003–REVISED FEBRUARY 2007
Use Equation 1 to calculate the adjust resistor value. See Table 2 for parameters, RS and Vmin
.
Equation 1. Output Voltage Adjust
Table 2. Adjust Equation Parameters
PARAMETERS
PTH12030W
1.2 V
PTH12030L
0.8 V
0.8 V
Vmin
Vmax
Rs
RSET = 10 kW x
- RS kW
VO - Vmin
(1)
5.5 V
1.8 V
1.82 kΩ
7.87 kΩ
Table 3. Output Voltage Set-Point Resistor Values
PTH12030W
VOUT
PTH12030L
VOUT
1.2
RSET
RSET
VOUT
0.8
RSET
Open
Open
2.7
2.75
2.8
2.85
2.9
2.95
3
3.51 kΩ
3.34 kΩ
3.18 kΩ
3.03 kΩ
2.89 kΩ
2.75 kΩ
2.62 kΩ
2.50 kΩ
2.39 kΩ
2.28 kΩ
2.18 kΩ
2.08 kΩ
1.99 kΩ
1.9 kΩ
1.82 kΩ
1.66 kΩ
1.51 kΩ
1.38 kΩ
1.26 kΩ
1.14 kΩ
1.04 kΩ
939 Ω
1.225
1.25
1.275
1.3
318 kΩ
158 kΩ
105 kΩ
78.2 kΩ
62.2 kΩ
51.5 kΩ
43.9 kΩ
38.2 kΩ
33.7 kΩ
30.2 kΩ
27.3 kΩ
24.8 kΩ
21 kΩ
0.825
0.85
0.875
0.9
312 kΩ
152 kΩ
98.8 kΩ
72.1 kΩ
56.1 kΩ
45.5 kΩ
37.8 kΩ
32.1 kΩ
27.7 kΩ
24.1 kΩ
21.2 kΩ
18.8 kΩ
16.7 kΩ
15 kΩ
1.325
1.35
1.375
1.4
0.925
0.95
0.975
1
3.05
3.1
3.15
3.2
3.25
3.3
3.35
3.4
3.5
3.6
3.7
3.8
3.9
4
1.425
1.45
1.475
1.5
1.025
1.05
1.075
1.1
1.55
1.6
1.125
1.15
1.175
1.2
18.2 kΩ
16 kΩ
1.65
1.7
13.5 kΩ
12.1 kΩ
11 kΩ
14.2 kΩ
12.7 kΩ
11.5 kΩ
10.5 kΩ
9.61 kΩ
8.85 kΩ
8.18 kΩ
7.59 kΩ
7.07 kΩ
6.6 kΩ
1.75
1.8
1.225
1.25
1.275
1.3
9.91 kΩ
8.97 kΩ
8.13 kΩ
7.37 kΩ
6.68 kΩ
6.04 kΩ
5.46 kΩ
4.93 kΩ
4.44 kΩ
3.98 kΩ
3.56 kΩ
2.8 kΩ
1.85
1.9
1.95
2
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5
1.325
1.35
1.375
1.4
847 Ω
2.05
2.1
761 Ω
680 Ω
2.15
2.2
604 Ω
1.425
1.45
1.475
1.5
6.18 kΩ
5.8 kΩ
533 Ω
2.25
2.3
466 Ω
5.45 kΩ
5.14 kΩ
4.85 kΩ
4.58 kΩ
4.33 kΩ
4.11 kΩ
3.89 kΩ
3.7 kΩ
402 Ω
2.35
2.4
342 Ω
1.55
1.6
285 Ω
2.13 kΩ
1.54 kΩ
1.02 kΩ
551 Ω
2.45
2.5
5.1
5.2
5.3
5.4
5.5
231 Ω
1.65
1.7
180 Ω
2.55
2.6
131 Ω
1.75
1.8
85 Ω
130 Ω
2.65
41 Ω
9
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