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L9679P Datasheet(PDF) 236 Page - STMicroelectronics |
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L9679P Datasheet(HTML) 236 Page - STMicroelectronics |
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236 / 272 page  Electrical characteristics L9679P 236/272 DocID029275 Rev 1 20 TJSDERSYNCBST Thermal shutdown - 150 175 190 C 21 THYS_TSDSYNCBST Thermal shutdown hysteresis - 5 10 15 °C Table 44. SYNCBOOST converter DC specifications (continued) No Symbol Parameter Conditions Min Typ Max Unit Table 45. SYNCBOOST converter AC specifications No Symbol Parameter Conditions Min Typ Max Unit 1FSW_SYNCBST SYNCBST switching frequency - 1.8 1.882 2.0 MHz 2 TRISE_SYNCBSTSW_SLOW TFALL_SYNCBSTSW_SLOW SYNCBSTSW transition time 10% to 90% voltage on SYNCBSTSW VIN = VINFASTSLOPE_H Design Info 15 - 30 ns 3 TRISE_SYNCBSTSW_FAST TFALL_SYNCBSTSW_FAST 10% to 90% voltage on SYNCBSTSW VIN = VINFASTSLOPE_L Design Info 5 - 20 ns 4TSOFTST_SYNCBST SYNCBST Soft- start Time Design Info. Time from activation of SYNCBOOST when overcurrent is 40 % of IOC_SYNCBST_HIGH (IOC_SYNCBST_LOW) to instant when overcurrent is 100% of IOC_SYNCBST_HIGH (IOC_SYNCBST_LOW) - - 1075 μs 5TSOFTST_OC_SYNCBST ERBOOST Over Current threshold soft start time Not tested -5% 1024 +5% μs 6TFLT_TSD_SYNCBST Thermal shutdown filter time -- - 10 μs 7TBLK_SYNCSW Sync boost activation blanking time after thermal shutdown -- 1 - ms Table 46. SYNCBOOST converter external components design info No Symbol Component Conditions Min Typ Max Unit 1LSYNCBST Inductance Min 4.7 μH nominal 3.76 - - μH 2 ESLSYNCBST Inductance resistance - - - 0.1 Ω 3CBLK_SYNCBST Output bulk capacitance Min 2.2 μF nominal 1.76 - - μF 4 ESRCBLK_SYNCBST Bulk capacitor ESR - - - 50 mΩ |
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