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L9680 Datasheet(PDF) 259 Page - STMicroelectronics |
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L9680 Datasheet(HTML) 259 Page - STMicroelectronics |
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259 / 286 page  DS11615 Rev 7 259/286 L9680 Electrical characteristics 285 17.17 Deployment driver diagnostic 17.17.1 Squib/pyroswitch resistance measurement All electrical characteristics are valid for the following conditions unless otherwise noted: -40 °C Ta +95 °C, VINGOOD0(max) VIN 35 V, 6 V SSxy 35 V, 7 V SYNCBOOST 35 V. 10 TFLT_ILIM_LS Low-side overcurrent to low- side deactivation deglitch time in short to battery condition - 80 100 120 µs 11 TFLT_OS_LS Low-side overcurrent to high-side deactivation deglitch time in case of intermittent open to squib/pyroswitch condition - - - 20 µs 12 TOFF_OS_HS High-side OFF time in case of intermittent open to squib/pyroswitch condition - 4 - 12 µs Table 57. Deployment drivers – AC specifications (continued) No Symbol Parameter Conditions Min Typ Max Unit Table 58. Deployment drivers diagnostics - Squib/pyroswitch resistance measurement No Symbol Parameter Conditions Min Typ Max Unit 1 RSQ_RANGE_1 Squib/pyroswitchresistance range 1 LPDIAGREQ(ISRC_CURR_ SEL) = 0 0 - 10.0 Ω 2 RSQ_RANGE 2 Squib/pyroswitchresistance range 2 LPDIAGREQ(ISRC_CURR_ SEL) = 1 0 - 50.0 Ω 3 GRSQ Squib/pyroswitchresistance measurement Differential amplifier gain VOUT_RSQ = GRSQ x [(VSF - VSR)] + Voff_RSQ -2% 5.2 +2% V/V 4 Voff_RSQ Squib/pyroswitchresistance measurement Differential amplifier offset VOUT_RSQ = GRSQ x [(VSF – VSR)] + Voff_RSQ 200 - 400 mV 5 ISRC_HI_SF ISRC_HI_SR Squib/pyroswitchresistance measurement High current source LPDIAGREQ(ISRC_CURR_ SEL) = 0 LPDIAGREQ(ISRC) = ‘01’ or ‘10’ SyncBoost = 11.5 V and 35 V -5% 40 +5% mA 6 ISRC_LO_SF ISRC_LO_SR Squib/pyroswitchresistance measurement Low current source LPDIAGREQ(ISRC_CURR_ SEL) = 1 LPDIAGREQ(ISRC) =’01’ or ‘10’ SyncBoost = 11.5 V and 35 V -10% 8 +10% mA 7 ISRC_DELTA Squib/pyroswitch Resistance Measurement Delta Current Source ISRC_HI_x - ISRC_LO_x -5% 32 +5% mA |
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