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PT6980 Datasheet, PDF (10/12 Pages) Texas Instruments – 10-A 12V-Input Dual Output Integrated Switching Regulator | |||
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Application Notes
PT6980 Series
Table 1
ADJUSTMENT RANGE AND FORMULA PARAMETERS
Vo1 Bus
Series Pt #
Adj. Resistor
PT6981/85 PT6982/83/84
(R3)/R4
(R3)/R4
Vo2 Bus (2)
PT6984/85
(R1)/R2
Vo(nom)
Va(min)
Va(max)
Vr
Rs (kâ¦)
2.5V
1.8V *
3.6V
1.27V
7.5
3.3V
2.5V *
3.6V
1.27V
15.4
1.2V
1.0V â
1.5V #
0.6125V
20.0
PT6981/83
(R1)/R2
1.8V
1.5V â
2.4V
1.0V
16.9
Ref. Note 3:
* (R3) = Zero-ohm link
â (R1) = Zero-ohm link
# (R2) = Zero-ohm link
PT6936
(R1)/R2
2.5V
1.8V â
3.0
1.0V
11.5
Table 2
ADJUSTMENT RESISTOR VALUES
Vo1 Bus
Series Pt #
PT6981/85 PT6982/83/84
Adj. Resistor (R3)/R4
(R3)/R4
Vo(nom)
Va(reqâd)
1.8
1.85
1.9
1.95
2.0
2.05
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
2.5V
(0.0)
(1.4)kâ¦
(3.0)kâ¦
(4.9)kâ¦
(7.1)kâ¦
(9.8)kâ¦
(13.3)kâ¦
(23.5)kâ¦
(44.0)kâ¦
(106.0)kâ¦
120.0kâ¦
56.0kâ¦
34.8kâ¦
24.3kâ¦
17.9kâ¦
13.7kâ¦
10.6kâ¦
8.4kâ¦
6.6kâ¦
5.2kâ¦
4.1kâ¦
3.3V
(0.0)kâ¦
(3.6)kâ¦
(8.4)kâ¦
(15.2)kâ¦
(25.4)kâ¦
(42.3)kâ¦
(76.1)kâ¦
(178.0)kâ¦
112.0k
48.1k
26.9k
R1/R3 = (Blue), R2/R4 = Black
Vo2 Bus
Series Pt #
Adj. Resistor
Vo(nom)
Va(reqâd)
1.0
1.05
1.1
1.15
1.2
1.25
1.3
1.35
1.4
1.45
1.5
1.55
1.6
1.65
1.7
1.75
1.8
1.85
1.9
1.95
2.0
2.05
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
PT6984/85
(R1)/R2
1.2V
PT6981/83
(R1)/R2
1.8V
(0.0)kâ¦
(9.2)kâ¦
(28.8)kâ¦
(87.5)kâ¦
101.5kâ¦
41.2kâ¦
20.8kâ¦
10.6kâ¦
4.5kâ¦
0.0kâ¦
(0.0)kâ¦
(5.1)kâ¦
(13.1)kâ¦
(26.4)kâ¦
(53.1)kâ¦
(133.0)kâ¦
183.0kâ¦
83.1kâ¦
49.8kâ¦
33.1kâ¦
23.1kâ¦
16.4kâ¦
8.1kâ¦
3.1kâ¦
0.0kâ¦
PT6982
(R1)/R2
2.5V
(0.0)kâ¦
(1.6)kâ¦
(3.5)kâ¦
(5.8)kâ¦
(8.5)kâ¦
(11.8)kâ¦
(16.0)kâ¦
(28.5)kâ¦
(53.5)kâ¦
(129.0)kâ¦
88.5kâ¦
38.5kâ¦
21.8kâ¦
13.5kâ¦
8.5kâ¦
For technical support and more information, see inside back cover or visit www.ti.com
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