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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L9961 датащи(PDF) 14 Page - STMicroelectronics |
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L9961 датащи(HTML) 14 Page - STMicroelectronics |
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14 / 63 page  Symbol Parameter Test conditions Min. Typ. Max. Unit VVREG_LOAD_REG_NORM Load regulation NORMAL state Iload from 0 μA to 15 mA (and viceversa), with ideal step transition -160 +160 mV VVREG_STBY Regulated voltage STANDBY state -30 °C< TAMB=TJ <60 °C 2.8 3.6 V IVREG_STBY Output current STANDBY state -30 °C< TAMB=TJ <60 °C Application info 1 300 μA VVREG_LIN_REG_STBY Line reg stby STANDBY state VB from 4.3V to 22 V in 100 μs Iload=0, 50 μA guaranteed by design -250 +250 mV VVREG_LOAD_REG_STBY Load regulation in STANDBY STANDBY state Iload= step 0-50 μA in 100 μs -400 +400 mV VVREG_LOAD_REG_STBY_OVL Overload regulation in STANDBY STANDBY state Iload= step 0-IWAKEMAX, pulse lasting TWAKEMAX -30 °C< TAMB=TJ<60 °C 2.7 V VVREG_NORM_UV VREG Undervoltage threshold in NORMAL state 2.6 2.7 2.9 V TVREG_UV_FIL VREG UV filter time in NORMAL state 20 μs TVREG_UV_BLK VREG UV blanking time upon transition to NORMAL state 8 ms VVREG_STBY_UV VREG Undervoltage threshold in STANDBY state STANDBY state 2.1 2.5 2.8 V CREG External LDO capacitance Application info, required for stability -20% 4.7 +20% μF 3.4 Voltage conversion routine While in NORMAL state, L9961 cyclically executes the voltage conversion routine as shown in Figure 6. Task execution time is TADCV_CONV, which is the sum of the individual step duration: • NCELL represents the number of enabled cells. The TCELL_FILTER filter time is applied to each cell conversion. At least 3 cells must be converted • The TCELL_FILTER filter time is also applied to VB pin conversion (if enabled) • The TTEMP_FILTER filter time is applied to NTC conversion (if enabled) • The TTEMP_FILTER filter time is applied to Die Temperature conversion, which is always performed • The task is scheduled to run every TMEAS_CYCLE (programmable in TCYCLE field). Changing configuration parameters while a conversion is ongoing may result in inadvertent faults and reactions. MCU is supposed to disable the voltage conversion routine programming TMEAS_CYCLE = 0x0 before applying a new configuration set. L9961 Voltage conversion routine DS14012 - Rev 1 page 14/63 |
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