PTB48500 Datasheet, PDF (10/14 Pages) Texas Instruments – Dual-Output, 48-V Input Isolated DC/DC Converter for xDSL

Application Notes continued
PTB48500, PTB48501, & PTB48502
Table 1-2
ADJUST RESISTOR VALUES
Part No.
PTB4850xA
% Adjust Va (V)
R1 / (R2)
–21
0.848
–20
0.960
–19
0.972
–18
0.984
–17
0.996
–16
1.008
–15
1.020
–14
1.032
–13
1.044
–12
1.056
–11
1.068
–10
1.080
–9
1.092
–8
1.104
–7
1.116
–6
1.128
–5
1.140
–4
1.152
–3
1.164
–2
1.176
–1
1.188
0
1.200
+1
1.212
+2
1.224
+3
1.236
+4
1.248
+5
1.260
+6
1.272
+7
1.284
+8
1.296
+9
1.308
+10
1.320
N/A
(0.3) kΩ
(1.5) kΩ
(2.9) kΩ
(4.4) kΩ
(6.1) kΩ
(8.0) kΩ
(10.2) kΩ
(12.7) kΩ
(15.7) kΩ
(19.2) kΩ
(23.4) kΩ
(28.6) kΩ
(35) kΩ
(43.2) kΩ
(54.2) kΩ
(69.7) kΩ
(92.8) kΩ
(131) kΩ
(208) kΩ
(440) kΩ
148 kΩ
65.8 kΩ
38.4 kΩ
24.6 kΩ
16.4 kΩ
10.9 kΩ
7 kΩ
4.1 kΩ
1.8 kΩ
0 kΩ
R1 =Adjust up, (R2) =Adjust down
PTB48502A
R1 / (R2)
(0.5) kΩ
(1.4) kΩ
(2.3) kΩ
(3.4) kΩ
(4.6) kΩ
(5.9) kΩ
(7.4) kΩ
(9.1) kΩ
(11.1) kΩ
(13.4) kΩ
(16.1) kΩ
(19.4) kΩ
(23.4) kΩ
(28.4) kΩ
(34.8) kΩ
(43.4) kΩ
(55.4) kΩ
(73.4) kΩ
(103.0) kΩ
(163.0) kΩ
(343.0) kΩ
108.0 kΩ
48.0 kΩ
28.1 kΩ
18.1 kΩ
12.1 kΩ
8.1 kΩ
5.3 kΩ
3.2 kΩ
1.5 kΩ
0.2 kΩ
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