PT4663 datasheet(13/13 Pages) TI

13 / 13 page

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Application Notes continued

5.5

5.0k

Ω

5.4

11.2k

Ω

5.3

21.6k

Ω

5.2

42.4k

Ω

5.1

105.0k

Ω

5.0

4.9

(99.8)k

Ω

4.8

(37.4)k

Ω

4.7

(16.6)k

Ω

4.6

(6.2)k

Ω

4.5

(0.0)

R1/R3 = (Blue), R2/R4 = Black

Table 2A; ADJUSTMENT RESISTOR VALUES, Vo1

24V Bus Pt.# PT4681/7

PT4682/3/5

PT4688

PT4686

48V Bus Pt.# PT4661/7

PT4662/3/5

PT4668

PT4666

Adj. Resistor

(R1)/R2

Vo(nom)

5.0V

3.3V

2.5V

Va(req’d)

Table 1; ADJUSTMENT RANGE AND FORMULA PARAMETERS

Vo1 Bus

Vo2 Bus (2)

24V Bus Pt.#

PT4681/7

PT4682/3/5

PT4688

PT4686

PT4681

PT4682

PT4683/6/7

PT4685

PT4688

48V Bus Pt.#

PT4661/7

PT4662/3/5

PT4668

PT4666

PT4661

PT4662

PT4663/6/7

PT4665

PT4668

Adj. Resistor

(R1)/R2

(R3)/R4

Vo(nom)

5.0V

3.3V

2.5V

3.3V

2.5V

1.8V

1.5V

1.2V

Va(min)

4.5V

2.97V

2.25V

2.97V

2.25V

1.62V

1.35

1.08

Va(max)

5.5V

3.63V

2.75V

3.63V

2.75V

1.98V

1.65

1.32

2.5V

1.65V

2.5V

1.25

1.5V

TBD

0.6V

Ko (V·k

Ω

Ω)

1.248

8.234

10.96

6.24

1.8

2.0

1.9

TBD

0.726

Rs (k

Ω

Ω)

20.0

4.99

20.0

4.99

3.32

TBD

4.22

PT4660 & PT4680 Series

3.6

7.4k

Ω

31.5k

Ω

3.54

14.3k

Ω

40.7k

Ω

3.48

25.7k

Ω

55.9k

Ω

3.42

48.6k

Ω

86.3k

Ω

3.36

117.0k

Ω

178.0k

Ω

3.3

3.24

(112.0k

Ω)

(49.1k

Ω)

3.18

(43.6k

Ω)

(19.9k

Ω)

3.12

(20.8k

Ω)

(10.1k

Ω)

3.06

(9.3k

Ω)

(5.2k

Ω)

3.0

(2.5k

Ω)

(2.3k

Ω)

1.95

9.4k

Ω

1.9

15.7k

Ω

1.85

34.7k

Ω

1.8

1.75

(3.0)k

Ω

1.7

1.65

TBD

1.6

TBD

1.55

TBD

1.5

1.45

(TBD)

1.4

(TBD)

1.35

(TBD)

1.3

3.0k

Ω

1.275

5.5k

Ω

1.25

10.3k

Ω

1.225

24.8k

Ω

1.2

1.175

(23.6)k

Ω

1.15

(9.1)k

Ω

1.125

(4.3)k

Ω

1.1

(1.8)k

Ω

Table 2B; ADJUSTMENT RESISTOR VALUES, Vo2

24V Bus Pt.#

PT4681

PT4682

PT4683/6/7

PT4685

PT4688

48V Bus Pt.#

PT4661

PT4662

PT4663/6/7

PT4665

PT4668

Adj. Resistor

(R3)/R4

Vo(nom)

3.3V

2.5V

1.8V

1.5V

1.2V

Va(req’d)

3.6

1.0k

Ω

3.54

2.5k

Ω

3.48

5.0k

Ω

3.42

10.0k

Ω

3.36

25.0k

Ω

3.3

3.24

(29.8)k

Ω

3.18

(11.8)k

Ω

3.12

(5.8)k

Ω

3.06

(2.8)k

Ω

3.0

(1.0)k

Ω

2.75

4.7k

Ω

2.7

6.7k

Ω

2.65

10.0k

Ω

2.6

16.7k

Ω

2.55

36.7k

Ω

2.5

2.45

(22.0)k

Ω

2.4

(8.7)k

Ω

2.35

(4.2)k

Ω

2.3

(2.0)k

Ω

2.25

(0.7)k

Ω

R1/R3 = (Blue), R2/R4 = Black

2.75

5.0k

Ω

2.7

11.2k

Ω

2.65

21.6k

Ω

2.6

42.4k

Ω

2.55

105.0k

Ω

2.5

2.45

(99.8k

Ω)

2.4

(37.4k

Ω)

2.35

(16.6k

Ω)

2.3

(6.2k

Ω)

2.25

(0.0k

Ω)

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