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FPF2164 Datasheet(PDF) 11 Page - Fairchild Semiconductor |
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FPF2164 Datasheet(HTML) 11 Page - Fairchild Semiconductor |
11 / 13 page 11 www.fairchildsemi.com FPF2163/4/5 Rev. C3 This is more power than the package can dissipate, but the thermal shutdown of the part will activate to protect the part from damage due to excessive heating. When using the FPF2164, attention must be given to the manual resetting of the part. The junction temperature will only be able to increase to the thermal shutdown threshold. Once this temperature has been reached, toggling ON will not turn-on the switch until the junction temperature drops. For the FPF2165, a short on the output will cause the part to operate in a constant current state dissipating a worst case power of, This large amount of power will activate the thermal shutdown and the part will cycle in and out of thermal shutdown so long as the ON pin is active and the short is present. Board Layout For best performance, all traces should be as short as possible. To be most effective, the input and output capacitors should be placed close to the device to minimize the effects that parasitic trace inductances may have on normal and short-circuit operation. Using wide traces for VIN, VOUT and GND will help minimize parasitic electrical effects along with minimizing the case to ambient thermal impedance. (4) Pmax () VIN max () ILIM max () × = 5.5 1.5 × = 8.25W = |
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Similar Description - FPF2164 |
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