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G923-475T1UF Datasheet(PDF) 8 Page - Interpoint Corporation Company |
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G923-475T1UF Datasheet(HTML) 8 Page - Interpoint Corporation Company |
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8 / 9 page  Ver: 1.1 Jan 19, 2006 TEL: 886-3-5788833 http://www.gmt.com.tw 8 G923 Global Mixed-mode Technology Inc. Layout Guide An input capacitance of ≅ 1µF is required between the G923 input pin and ground (the amount of the capaci- tance may be increased without limit), This capacitor must be located a distance of not more than 1cm from the input and return to a clean analog ground. Input capacitor can filter out the input voltage spike caused by the surge current due to the inductive effect of the package pin and the printed circuit board’s rout- ing wire. Otherwise, the actual voltage at the IN pin may exceed the absolute maximum rating. The output capacitor also must be located a distance of not more than 1cm from output to a clean analog ground. Because it can filter out the output spike caused by the surge current due to the inductive effect of the package pin and the printed circuit board’s rout- ing wire. Figure 6 is adjustable mode of G923 PCB layout. Figure 7 is a PCB layout of G923 fixed mode. Figure 4 Safe Operating Area Safe Operating Area of G923 [ Power Diss ipation Limit] 0 50 100 150 200 0.0 0 .5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 Input-Output Voltage Differential VIN-VOUT (V) TA=25 ℃ TA=55 ℃ TA=85 ℃ Maximum Recommended Outp ut Curren t TA=25°C,Still Air 1oz Copper on SOT-23-5Pack age Mounted on recommended mimimum footprint (RθJA=240°C/ W) Maximum Power Dissipation of SOT-23-5 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 25 35 45 55 65 75 85 9 5 105 115 125 Amibent Temperature TA (°C) St ill Air 1oz Copper on SOT-23-5 Pack age Mount ed on rec omm end mim imum f oot print (RθJA=240°C/W ) Note : VIN(m ax) <=5.5V Figure 5 Power Dissipation vs. Tem perature Figure 4 Safe O perating Area Figure 6. Adjustable Mode Figure 7. Fixed Mode *Distance between pin & capacitor must no more than 1cm *Distance between pin & capacitor must no more than 1cm Figure 3. Recomme nded Minimum Footprint Amibent T emperature T A (°C) Still Air 1oz copper on SOT-23-5 Package Mounted on recommended foorprint (R?JA=240°C/W) |
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