PTEA420025 Datasheet, PDF (13/16 Pages) Texas Instruments – 20-A, 48-V INPUT, ISOLATED, 1/8th BRICK DC-DC CONVERTER

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V_O (nom)
% Adjust (V)
+10
+9
+8
+7
+6
+5
+4
+3
+2
+1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
–16
–17
–18
–19
–20
PTEA420025, PTEA420033
SLTS288C – JUNE 2007 – REVISED OCTOBER 2010
Table 4. Adjustment Resistor Values
Adjusted Output Voltage (V)
3.3 V
2.5 V
3.630
3.597
3.564
3.531
3.498
3.465
3.432
3.399
3.366
3.333
3.300
3.267
3.234
3.201
3.168
3.135
3.102
3.069
3.036
3.003
2.970
2.937
2.904
2.871
2.838
2.805
2.772
2.739
2.706
2.673
2.640
2.750
2.725
2.700
2.675
2.650
2.625
2.600
2.575
2.550
2.525
2.500
2.475
2.450
2.425
2.400
2.375
2.350
2.325
2.300
2.275
2.250
2.225
2.200
2.175
2.150
2.125
2.100
2.075
2.050
2.025
2.000
Trim-Up R_ADJ
3.3 V
R1 (kΩ)
2.5 V
R1 (kΩ)
90.9
53.6
100
59.0
113
66.5
127
76.8
147
88.7
178
107
221
133
294
178
432
267
866
536
Open
Open
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-
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Trim-Down R_ADJ
3.3 V
R2 (kΩ)
2.5 V
R2 (kΩ)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
499
499
243
243
158
158
118
118
90.9
90.9
75
75
63.4
63.4
53.6
53.6
46.4
46.4
41.2
41.2
36.5
36.5
32.4
32.4
28.7
28.7
26.1
26.1
23.7
23.7
21.5
21.5
19.6
19.6
18.2
18.2
16.5
16.5
15.4
15.4
Copyright © 2007–2010, Texas Instruments Incorporated
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