
Application Notes
continued
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Table 2
PT6620 ADJUSTMENT RESISTOR VALUES
Series Pt #
PT6622
Current
7.5Adc
V
o
(nom)
1.5Vdc
V
a
(req’d)
1.4
(5.0)k
1.5
1.6
59.9k
1.7
28.7k
1.8
18.3k
1.9
13.1k
2.0
10.0k
2.1
7.9k
2.2
6.4k
2.3
5.3k
2.4
4.4k
2.5
3.8k
2.6
3.2k
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.0
5.1
R1 =
(Blue)
R2 = Black
PT6623
7.5Adc
2.5Vdc
PT6621
7.5Adc
3.3Vdc
PT6624
7.5Adc
3.6Vdc
PT6625
6.0Adc
5.0Vdc
Series Pt #
Current
V
o
(nom)
V
a
(req’d)
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
6.0
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
7.0
7.1
7.2
7.3
7.4
7.5
7.6
7.8
8.0
8.2
8.4
8.6
8.8
9.0
9.2
9.4
9.6
9.8
10.0
PT6625
6Adc
5.0Vdc
PT6626
3.3Adc
9.0Vdc
89.1k
55.4k
38.5k
28.4k
21.7k
16.8k
13.2k
10.4k
8.2k
6.3k
4.8k
3.5k
2.4k
1.4k
(0.5)k
(1.1)k
(1.9)k
(2.6)k
(3.4)k
(4.2)k
(5.1)k
(6.1)k
(7.1)k
(8.1)k
(9.3)k
(10.5)k
(11.9)k
(13.3)k
(14.9)k
(16.6)k
(18.4)k
(20.5)k
(22.7)k
(25.2)k
(27.9)k
(31.0)k
(34.4)k
(38.3)k
(42.8)k
(53.9)k
(69.6)k
(93.0)k
(132.0)k
(210.0)k
(445.0)k
(5.8)k
(10.0)k
(16.3)k
(26.7)k
(47.5)k
(
110.0)k
(0.6)k
(3.4)k
(6.8)k
(11.2)k
(17.1)k
(25.4)k
(37.8)k
(58.5)k
(99.8)k
(224.0)k
(1.7)k
(4.2)k
(7.4)k
(11.3)
(16.4)k
(23.2)k
(32.7)k
(46.9)k
(70.6)k
(118.0)k
(260.0)k
120.0k
57.5k
36.7k
26.3k
20.0k
15.8k
12.9k
10.6k
8.9k
7.5k
6.4k
5.4k
(0.6)k
(2.1)k
(3.7)
(5.5)k
(7.4)k
(9.7)k
(12.2)k
(15.1)k
(18.4)k
(22.3)k
(26.9)k
(32.5)k
(39.2)k
(47.6)k
(58.5)k
(73.0)k
(93.2)k
(124.0)k
(174.0)k
(275.0)k
(579.0)k
139.0k
63.5k
38.3k
25.7k
18.2k
13.1k
9.5k
6.8k
4.7k
3.0k
1.7k
0.5k
139.0k
63.5k
38.3k
25.7k
18.2k
13.1k
9.5k
6.8k
4.7k
3.0k
1.7k
0.5k
63.5k
25.7k
13.1k
6.8k
3.0k
190.0k
PT6620 Series