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TS51221-M015QFNR Scheda tecnica(PDF) 4 Page - Semtech Corporation |
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TS51221-M015QFNR Scheda tecnica(HTML) 4 Page - Semtech Corporation |
4 / 18 page TS51221 Final Datasheet Rev 1.1 April 6, 2015 www.semtech.com 4 of 18 Semtech Thermal Characteristics Symbol Parameter Value Units ΘJA ThermalResistanceJunctiontoAir(Note1) 34.5 °C/W ΘJC ThermalResistanceJunctiontoCase(Note1) 2.5 °C/W TSTG StorageTemperatureRange -65to150 °C TJMAX MaximumJunctionTemperature 150 °C TJ OperatingJunctionTemperatureRange -40to125 °C Note 1: Assumes 16LD 3x3 QFN with hi-K JEDEC board and 13.5 inch2 of 1 oz Cu and 4 thermal vias connected to PAD Recommended Operating Conditions Symbol Parameter Min Typ Max Unit V CC InputOperatingVoltage 4.5 12 24 V CBST BootstrapCapacitor 17.6 22 26.4 nF LOUT OutputFilterInductorTypicalValue(Note1) 3.76 4.7 5.64 uH COUT OutputFilterCapacitorTypicalValue(Note2) 33 44(2x22) uF COUT-ESR OutputFilterCapacitorESR 2 100 mΩ CBYPASS InputSupplyBypassCapacitorTypicalValue(Note3) 8 10 uF Note 1: For best performance, an inductor with a saturation current rating higher than the maximum V OUT load requirement plus the inductor current ripple. Note 2: For best performance, a low ESR ceramic capacitor should be used. Note 3: For best performance, a low ESR ceramic capacitor should be used. If C BYPASS is not a low ESR ceramic capacitor, a 0.1uF ceramic capacitor should be added in parallel to CBYPASS. |
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