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Equation 1. Output Voltage Adjust

R

=10k

x

SET

W

0.8V

-R

k

S

W

V

-V

O

min

(1)

PTH12030W/L

SLTS211F – MAY 2003 – REVISED FEBRUARY 2007

Use Equation 1 to calculate the adjust resistor value. See Table 2 for parameters, R

Table 2. Adjust Equation Parameters

PARAMETERS

PTH12030W

PTH12030L

1.2 V

0.8 V

5.5 V

1.8 V

1.82 k

Ω

7.87 k

Ω

Table 3. Output Voltage Set-Point Resistor Values

PTH12030W

PTH12030L

1.2

Open

2.7

3.51 k

Ω

0.8

Open

1.225

318 k

Ω

2.75

3.34 k

Ω

0.825

312 k

Ω

1.25

158 k

Ω

2.8

3.18 k

Ω

0.85

152 k

Ω

1.275

105 k

Ω

2.85

3.03 k

Ω

0.875

98.8 k

Ω

1.3

78.2 k

Ω

2.9

2.89 k

Ω

0.9

72.1 k

Ω

1.325

62.2 k

Ω

2.95

2.75 k

Ω

0.925

56.1 k

Ω

1.35

51.5 k

Ω

3

2.62 k

Ω

0.95

45.5 k

Ω

1.375

43.9 k

Ω

3.05

2.50 k

Ω

0.975

37.8 k

Ω

1.4

38.2 k

Ω

3.1

2.39 k

Ω

1

32.1 k

Ω

1.425

33.7 k

Ω

3.15

2.28 k

Ω

1.025

27.7 k

Ω

1.45

30.2 k

Ω

3.2

2.18 k

Ω

1.05

24.1 k

Ω

1.475

27.3 k

Ω

3.25

2.08 k

Ω

1.075

21.2 k

Ω

1.5

24.8 k

Ω

3.3

1.99 k

Ω

1.1

18.8 k

Ω

1.55

21 k

Ω

3.35

1.9 k

Ω

1.125

16.7 k

Ω

1.6

18.2 k

Ω

3.4

1.82 k

Ω

1.15

15 k

Ω

1.65

16 k

Ω

3.5

1.66 k

Ω

1.175

13.5 k

Ω

1.7

14.2 k

Ω

3.6

1.51 k

Ω

1.2

12.1 k

Ω

1.75

12.7 k

Ω

3.7

1.38 k

Ω

1.225

11 k

Ω

1.8

11.5 k

Ω

3.8

1.26 k

Ω

1.25

9.91 k

Ω

1.85

10.5 k

Ω

3.9

1.14 k

Ω

1.275

8.97 k

Ω

1.9

9.61 k

Ω

4

1.04 k

Ω

1.3

8.13 k

Ω

1.95

8.85 k

Ω

4.1

939

Ω

1.325

7.37 k

Ω

2

8.18 k

Ω

4.2

847

Ω

1.35

6.68 k

Ω

2.05

7.59 k

Ω

4.3

761

Ω

1.375

6.04 k

Ω

2.1

7.07 k

Ω

4.4

680

Ω

1.4

5.46 k

Ω

2.15

6.6 k

Ω

4.5

604

Ω

1.425

4.93 k

Ω

2.2

6.18 k

Ω

4.6

533

Ω

1.45

4.44 k

Ω

2.25

5.8 k

Ω

4.7

466

Ω

1.475

3.98 k

Ω

2.3

5.45 k

Ω

4.8

402

Ω

1.5

3.56 k

Ω

2.35

5.14 k

Ω

4.9

342

Ω

1.55

2.8 k

Ω

2.4

4.85 k

Ω

5

285

Ω

1.6

2.13 k

Ω

2.45

4.58 k

Ω

5.1

231

Ω

1.65

1.54 k

Ω

2.5

4.33 k

Ω

5.2

180

Ω

1.7

1.02 k

Ω

2.55

4.11 k

Ω

5.3

131

Ω

1.75

551

Ω

2.6

3.89 k

Ω

5.4

85

Ω

1.8

130

Ω

2.65

3.7 k

Ω

5.5

41

Ω

9

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