PTH04070W_15 Datasheet, PDF (8/17 Pages) Texas Instruments – 3-A, 3.3/5-V INPUT ADJUSTABLE SWITCHING REGULATOR

PTH04070W
SLTS227B – SEPTEMBER 2004 – REVISED OCTOBER 2007
Table 2. Calculated Set-Point Resistor Values
V_O Req'd
(V)
0.900
0.925
0.950
0.975
1.000
1.025
1.050
1.075
1.100
1.125
1.150
1.175
1.200
1.225
1.250
1.275
1.300
1.325
1.350
1.375
1.400
1.425
1.450
R_SET (kΩ)
Open
353
175
116
85.9
68.0
56.2
47.7
41.3
36.4
32.4
29.2
26.5
24.2
22.2
20.5
19.0
17.7
16.6
15.5
14.6
13.7
13.0
V_O Req'd
(V)
1.475
1.50
1.55
1.60
1.65
1.70
1.75
1.80
1.85
1.90
1.95
2.00
2.05
2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
2.50
R_SET(kΩ)
12.3
11.6
10.5
9.49
8.64
7.90
7.24
6.66
6.14
5.67
5.25
4.86
4.51
4.19
3.89
3.61
3.36
3.12
2.90
2.70
2.51
2.33
V_O Req'd
(V)
2.55
2.60
2.65
2.70
2.75
2.80
2.85
2.90
2.95
3.00
3.05
3.10
3.15
3.20
3.25
3.30
3.35
3.40
3.45
3.50
3.55
3.60
R_SET(kΩ)
2.16
2.00
1.85
1.71
1.58
1.45
1.33
1.22
1.11
1.00
0.904
0.810
0.720
0.634
0.551
0.473
0.397
0.324
0.254
0.187
0.122
0.060
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