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L9396 データシート(PDF) 30 Page - STMicroelectronics |
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L9396 データシート(HTML) 30 Page - STMicroelectronics |
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30 / 109 page  Power supply L9396 30/109 DS12539 Rev 10 Buck configuration VCORE Output voltage Nominal 0.8V to 5V Excluding external voltage divider accuracy 0.776 - 5.15 V IVCORE Output load current RSH_HI_CURR 0.01 - 1 A CVCORE Output capacitor VCORE > 1.2 V -35% 22 +35% µF CVCORE Output capacitor VCORE ≤ 1.2V -35% 47 +35% µF LVCORE Buck inductor VCORE > 1.2 V -20% 22 +20% µH LVCORE Buck inductor VCORE ≤ 1.2 V -20% 12 +20% µH RLVCORE Buck inductor resistance - - - 105 mΩ CFET External FET gate charge - - - 30 nC CBS Bootstrap capacitor - - 100 - nF VCOREFDBK Feedback voltage Excluding external voltage divider accuracy 0.8 -3% - 0.8 +3% V dVSR_ac Line Transient Response All line, load; dt = 10 µs -8% - 8% % dVLR_ac Load Transient Response All line, load; dt = 10 µs -8% - 8% % VCORE ripple Ripple voltage - -20 - +20 mV IOC_VCORE_BUCK Over current detection RSH_HI_CURR 1.6 - 2.6 A Rdson_hs High side on resistance - - - 28 Ω Rdson_ls Low side on resistance - - - 8.3 Ω tflt_oc_vcore Shut down filter time for short to ground Filter time starts to count from when current in power MOS is more than IO_LIM 85 100 115 µs tflt_restart restart filter time for short to ground Filter time starts to count from when core buck is disabled 1.7 2 2.3 ms Sw_fr Switching frequency - - fOSCINT /34 (0.470) - MHz Table 12. VCORE regulator electrical characteristics (continued) Symbol Parameter Conditions Min Typ Max Unit |
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