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TS51221-M050QFNR Folha de dados(PDF) 6 Page - Semtech Corporation |
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TS51221-M050QFNR Folha de dados(HTML) 6 Page - Semtech Corporation |
6 / 18 page TS51221 Final Datasheet Rev 1.1 April 6, 2015 www.semtech.com 6 of 18 Semtech Regulator Characteristics ElectricalCharacteristics,T J=-40Cto125C,VCC=12V(unlessotherwisenoted) Symbol Parameter Condition Min Typ Max Unit Switch Mode Regulator: L=4.7uH and C=2 x 22uF V OUT-PWM OutputVoltageToleranceinPWM Mode I LOAD=1A V OUT– 2% V OUT V OUT+ 2% V V OUT-PFM OutputVoltageToleranceinPFM Mode I LOAD=0A V OUT– 1% V OUT+ 1% V OUT+ 3.5% V R DSON HighSideSwitchOnResistance I VSW=-1A(Note1) 180 mΩ LowSideSwitchOnResistance I VSW=1A(Note1) 120 mΩ I OUT OutputCurrent 1 A I OCD OverCurrentDetect HSswitchcurrent 1.4 1.8 2.4 A FB TH FeedbackReference(Adjustable Mode) (Note3) 0.886 0.9 0.914 V FB TH-TOL FeedbackReferenceTolerance (Note3) -1.5 1.5 % T SS SoftstartRampTime 4 ms FB TH-PFM PFMModeFBComparatorThreshold V OUT+ 1% V V OUT-UV VOUTUnderVoltageThreshold 91% V OUT 93% V OUT 95% V OUT V OUT-UV_HYST VOUTUnderVoltageHysteresis 1.5% V OUT V OUT-OV VOUTOverVoltageThreshold 103% V OUT V OUT-OV_HYST VOUTOverVoltageHysteresis 1% V OUT DUTY MAX MaxDutyCycle (Note2) 95% 97% 99% Note 1: R DSON is characterized at 1A and tested at lower current in production. Note 2: Regulator VSW pin is forced off for 240ns every 8 cycles to ensure the BST cap is replenished. Note 3: For the adjustable version, the ratio of VCC/V OUT cannot exceed 16. Note 4: Based on Over Current Detect testing |
Nº de peça semelhante - TS51221-M050QFNR |
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Descrição semelhante - TS51221-M050QFNR |
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