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JF48S3.3-3500 Datasheet(PDF) 6 Page - Wall Industries,Inc. |
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JF48S3.3-3500 Datasheet(HTML) 6 Page - Wall Industries,Inc. |
6 / 15 page TECHNICAL DATASHEET JF48S3.3-3500 (888) 597-WALL www.wallindustries.com Page 6 of 15 External Trim Adjustment Output voltage set point adjustment allows the user to increase or decrease the output voltage set point of a module. This is accomplished by connecting an external resistor between the TRIM pin and either the +Vout or -Vout pins. With an external resistor between the TRIM and +Vout pin, the output voltage set point decreases. With an external resistor between the TRIM and -Vout pin, the output voltage set point increases. Vo+ is the desired up output voltage Vo- is the desired down output voltage Trim Vo+ Rup Vo – Rdown 1% 3.333V 385.071 kΩ 3.267V 116.719 kΩ 2% 3.366V 191.511 kΩ 3.234V 54.779 kΩ 3% 3.399V 126.99 kΩ 3.201V 34.133 kΩ 4% 3.432V 94.73 kΩ 3.168V 23.810 kΩ 5% 3.465V 75.374 kΩ 3.135V 17.616 kΩ 6% 3.498V 62.47 kΩ 3.102V 13.486 kΩ 7% 3.531V 53.253 kΩ 3.069V 10.537 kΩ 8% 3.564V 46.34 kΩ 3.036V 8.325 kΩ 9% 3.597V 40.963 kΩ 3.003V 6.604 kΩ 10% 3.63V 36.662 kΩ 2.97V 5.228 kΩ (in Ω) Table 3 Trim Resistor Values (in Ω) RT2 RT1 -Vout Trim +Vout +Vin -Vin Figure 4 2050 8 . 0 5 . 2 5 . 2 5110 − − − ∗ = + o up V R 2050 ) ( 5110 ) 5 . 2 ( − − ∗ − = − − o out o down V V V R |
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