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L9788 Datasheet(PDF) 66 Page - STMicroelectronics |
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L9788 Datasheet(HTML) 66 Page - STMicroelectronics |
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66 / 264 page  Multi-voltage regulator supplies L9788 66/264 DS12308 Rev 4 Boost_DC4 Boost Duty cycle 4 Vcomp_th3 < VBAT_SENSE < Vcomp_th4 10 out of 43 clk cycles Guaranteed by SCAN - 23.85 - % VB_IN Vcomp_th4 VBAT_SENSE comparator threshold 4 - 7.4 7.8 8.2 V VBAT_SENSE Boost_DC5 Boost Duty cycle 5 Vcomp_th4 < VBAT_SENSE 4 out of 43 clk cycles Guaranteed by SCAN -9.3 - % VB_IN tdBAT_SENS VBAT_SENSE comparators delay time Vcomp_th1/2/3/4 comparators 0.19 - 2 μs VBAT_SENSE IBOOST_LS_sink LS driver sink current BOOST_G = 6 V 305070 mA BOOST_G IBOOST_HS_source HS driver source current BOOST_G = 0 V 305070 mA BOOST_G IBOOST_LS_sink LS driver sink current BOOST_G = 0.5 V 15 - 43 mA BOOST_G IBOOST_HS_source HS driver source current BOOST_G = 5.5 V 10 - 43 mA BOOST_G BOOST_G_Ileak Leakage current From 0 V to max pin voltage -- 1.2 µA BOOST_G I_VBAT_Sense_stby Current leakage on VBAT_sense pin in st-by - - - 1 µA VBAT_SENSE I_VBAT_Sense Pull down current on VBAT_sense operative mode - - - 100 µA VBAT_SENSE R_VBAT_sense Pull-down resistor from VBAT_sense to GND - 438 880 1320 kΩ VBAT_SENSE R1_VBAT_sense Resistor divider string element Design info, not tested 311 622 933 kΩ - R2_VBAT_sense Resistor divider string element Design info, not tested 28.75 57.5 86.25 kΩ - Table 27. Pre-boost regulator output electrical characteristics (continued) Symbol Parameter Test condition Min Typ Max Unit Pin |
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