SLTS102A Datasheet, PDF (7/8 Pages) Texas Instruments – 14-A 12V-Input Adjustable Integrated Switching Regulator

Application Notes continued
PT6705/PT6715 Series
Table 1
ADJUSTMENT AND FORMULA PARAMETERS
Series Pt # PT6729 PT6728 PT6727
Vo (nom)
Va (min)
Va (max)
Vr (V)
Ro (kΩ)
Rs (kΩ)
1.2
1.09
1.52
0.8
10.0
24.9
1.5
1.47
1.73
1.27
10.2
49.9
1.8
1.75
2.0
1.27
10.0
49.9
PT6726
2.5
2.25
2.85
1.27
10.0
33.2
PT6725
3.3
2.75
3.75
1.27
10.0
24.9
PT6724
5.0
4.01
5.47
1.27
9.09
24.9
Table 2
ADJUSTMENT RESISTOR VALUES
Series Pt # PT6729
PT6728
Vo (nom)
1.2V
1.5V
V_a (req’d)
1.1
(5.1)kΩ
1.15
(45.1)kΩ
1.2
1.25
135.0kΩ
1.3
55.1kΩ
1.35
28.4kΩ
1.4
15.1kΩ
1.45
7.1kΩ
1.47
4.7kΩ
(18.1)kΩ
1.5
1.8kΩ
1.55
209.0kΩ
1.6
79.6kΩ
1.65
36.5kΩ
1.7
14.9kΩ
1.75
1.8
1.85
1.9
1.95
2.0
2.05
2.1
2.15
2.2
2.25
2.3
2.35
2.4
2.45
2.5
2.55
2.6
2.65
2.7
2.75
2.8
2.85
R1 = (Blue) R2 = Black
PT6727
1.8V
(46.1)kΩ
204.0kΩ
77.1kΩ
34.8kΩ
13.6kΩ
PT6726
2.5V
(6.0)kΩ
(18.3)kΩ
(38.8)kΩ
(79.8)kΩ
(203.0)kΩ
221.0kΩ
93.8kΩ
51.5kΩ
30.3kΩ
17.6kΩ
9.1kΩ
3.1k
Series Pt #
Vo (nom)
V_a (req’d)
2.75
2.8
2.85
2.9
2.95
3.0
3.05
3.1
3.15
3.2
3.25
3.3
3.35
3.4
3.45
3.5
3.55
3.6
3.65
3.7
3.75
·
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.4
PT6725
3.3V
(2.0)kΩ
(5.7)kΩ
(10.2)kΩ
(15.9)kΩ
(23.1)kΩ
(32.8)kΩ
(46.3)kΩ
(66.6)kΩ
(100.0)kΩ
(168.0)kΩ
(371.0)kΩ
229.0kΩ
102.0kΩ
59.8kΩ
38.6kΩ
25.9kΩ
17.4kΩ
11.4kΩ
6.9kΩ
3.3kΩ
PT6724
5.0
(3.7)kΩ
(8.4)kΩ
(14.4)kΩ
(22.5)kΩ
(33.8)kΩ
(50.8)kΩ
(79.0)kΩ
(136.0)kΩ
(305.0)kΩ
90.5kΩ
32.8kΩ
13.6kΩ
4.0kΩ
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