Datasheet

PTH04040W
SLTS238C –SEPTEMBER 2005–REVISED JUNE 2010 www.ti.com
Table 3. Output Voltage Set-Point Resistor Values
V
OUT
R
SET
V
OUT
R
SET
0.8 Open 1.425 10.3 kΩ
0.825 318 kΩ 1.45 9.82 kΩ
0.85 158 kΩ 1.475 9.36 kΩ
0.875 104 kΩ 1.5 8.94 kΩ
0.9 77.5 kΩ 1.55 8.18 kΩ
0.925 61.5 kΩ 1.6 7.51 kΩ
0.95 50.8 kΩ 1.65 6.92 kΩ
0.975 43.2 kΩ 1.7 6.4 kΩ
1 37.5 kΩ 1.75 5.93 kΩ
1.025 33.1 kΩ 1.8 5.51 kΩ
1.05 29.5 kΩ 1.85 5.13 kΩ
1.075 26.6 kΩ 1.9 4.78 kΩ
1.1 24.2 kΩ 1.95 4.47 kΩ
1.125 22.1 kΩ 2 4.18 kΩ
1.15 20.4 kΩ 2.05 3.91kΩ
1.175 18.8 kΩ 2.1 3.66 kΩ
1.2 17.5 kΩ 2.15 3.44 kΩ
1.225 16.3 kΩ 2.2 3.22 kΩ
1.25 15.3 kΩ 2.25 3.03 kΩ
1.275 14.4 kΩ 2.3 2.84 kΩ
1.3 13.5 kΩ 2.35 2.67 kΩ
1.325 12.7 kΩ 2.4 2.51 kΩ
1.35 12.1 kΩ 2.45 2.36 kΩ
1.375 11.4 kΩ 2.5 2.22 kΩ
1.4 10.8 kΩ
NOTES:
1. A 0.05-W rated resistor can be used. The tolerance should be 1%, with temperature stability of 100 ppm/°C
(or better). Place the resistor as close to the regulator as possible. Connect the resistor directly between pins
17 and 16 using dedicated PCB traces.
2. Never connect capacitors from V
O
Adjust to either GND or V
O
. Any capacitance added to the V
O
Adjust pin
affects the stability of the regulator.
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