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PTN78020WAZT Datasheet(PDF) 11 Page - Texas Instruments |
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PTN78020WAZT Datasheet(HTML) 11 Page - Texas Instruments |
11 / 25 page www.ti.com GND GND R SET 0 .05 W 1 % C O 330 F m PTN78020W 7 4 5 6 2 3 V I V I V O V O GND Inhibit 1 Sense Adjust C 2.2 F Ceramic I m GND PTN78020W PTN78020H SLTS228A – DECEMBER 2004 – REVISED APRIL 2005 (1) A 0.05-W rated resistor may be used. The tolerance should be 1%, with a temperature stability of 100 ppm/ °C (or better). Place the resistor as close to the regulator as possible. Connect the resistor directly between pins 4 and 1 using dedicated PCB traces. (2) Never connect capacitors from VO Adjust to either GND or VO. Any capacitance added to the VO Adjust pin affects the stability of the regulator. Figure 24. PTN78020W VO Adjust Resistor Placement Table 3. PTN78020W Output Voltage Set-Point Resistor Values VO RSET VO RSET VO RSET VO RSET 2.50 V Open 3.7 V 50.7 k Ω 6.1 V 12.6 k Ω 9.0 V 4.07 k Ω 2.55 V 1.37 M Ω 3.8 V 46.3 k Ω 6.2 V 12.1 k Ω 9.2 V 3.75 k Ω 2.60 V 680 k Ω 3.9 V 42.5 k Ω 6.3 V 11.6 k Ω 9.4 V 3.46 k Ω 2.65 V 451 k Ω 4.0 V 39.3 k Ω 6.4 V 11.1 k Ω 9.6 V 3.18 k Ω 2.70 V 337 k Ω 4.1 V 36.4 k Ω 6.5 V 10.7 k Ω 9.8 V 2.91 k Ω 2.75 V 268 k Ω 4.2 V 33.9 k Ω 6.6 V 10.2 k Ω 10.0 V 2.66 k Ω 2.80 V 222 k Ω 4.3 V 31.6 k Ω 6.7 V 9.85 k Ω 10.2 V 2.42 k Ω 2.85 V 190 k Ω 4.4 V 29.6 k Ω 6.8 V 9.47 k Ω 10.4 V 2.20 k Ω 2.90 V 165 k Ω 4.5 V 27.8 k Ω 6.9 V 9.11 k Ω 10.6 V 1.98 k Ω 2.95 V 146 k Ω 4.6 V 26.2 k Ω 7.0 V 8.76 k Ω 10.8 V 1.78 k Ω 3.00 V 131 k Ω 4.7 V 24.7 k Ω 7.1 V 8.43 k Ω 11.0 V 1.58 k Ω 3.05 V 118 k Ω 4.8 V 23.3 k Ω 7.2 V 8.11 k Ω 11.2 V 1.40 k Ω 3.10 V 108 k Ω 4.9 V 22.1 k Ω 7.3 V 7.81 k Ω 11.4 V 1.22 k Ω 3.15 V 99.1 k Ω 5.0 V 21.0 k Ω 7.4 V 7.52 k Ω 11.6 V 1.05 k Ω 3.20 V 91.5 k Ω 5.1 V 19.9 k Ω 7.5 V 7.24 k Ω 11.8 V 889 Ω 3.25 V 85.0 k Ω 5.2 V 18.9 k Ω 7.6 V 6.97 k Ω 12.0 V 734 Ω 3.30 V 79.3 k Ω 5.3 V 18.0 k Ω 7.7 V 6.71 k Ω 12.2 V 585 Ω 3.35 V 74.2 k Ω 5.4 V 17.2 k Ω 7.8 V 6.46 k Ω 12.4 V 442 Ω 3.40 V 69.8 k Ω 5.5 V 16.4 k Ω 7.9 V 6.22 k Ω 12.6 V 305 Ω 3.45 V 65.7 k Ω 5.6 V 15.6 k Ω 8.0 V 5.99 k Ω 3.50 V 62.1 k Ω 5.7 V 15.0 k Ω 8.2 V 5.55 k Ω 3.55 V 58.9 k Ω 5.8 V 14.3 k Ω 8.4 V 5.14 k Ω 3.60 V 55.9 k Ω 5.9 V 13.7 k Ω 8.6 V 4.76 k Ω 3.65 V 53.2 k Ω 6.0 V 13.1 k Ω 8.8 V 4.40 k Ω 11 |
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