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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L9779WD датащи(PDF) 58 Page - STMicroelectronics |
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L9779WD датащи(HTML) 58 Page - STMicroelectronics |
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58 / 170 page  Functional description L9779WD 58/170 DocID027452 Rev 5 6.9.2 LSb function OUT6, 7 (O2 heater) Figure 34. LSb function OUT6, 7 (O2 heater) LSb functionality description LSb are 2 protected low-side drivers with diagnosis and over current protection circuit. They are driven via MicroSecond Channel interface. The turn on/off time is fixed and the slew-rate is controlled. When an over current fault occurs, the driver switches off with faster slew rate in order to reduce the power dissipation. The turn on/off time is fixed and the slew-rate is controlled. Max Cload = 20 nF. Table 22. LSb electrical characteristics Pin Symbol Parameter Test condition Min Typ Max Unit OUT 6, 7 RDS-on LSb Drain source resistance T = -40°C, Iload = 3 A 0.05 - 0.16 Ω T = 25°C, Iload = 3 A 0.13 - 0.23 Ω T = 130°C, Iload = 3 A 0.21 - 0.47 Ω IOUTlk Output leakage current - - - 10 µA VS/R Voltage S/R on/off R = 4.5 Ω, C = 10 nF From 80% to 30% of VOUT 0.5 - 2.5 V/µs VS/R GateKill FAST VR/S off when an OVC fault happens Load: 8 Ω, 10 nF From 80% to 30% of VOUT 5- 20 V/µs TTurn-on_ LSb Turn-on delay time From command to 80% VOUT Load: 4.5 Ω, 10 nF -- 7.5 µs TTurn-off_ LSb Turn-off delay time From command to 20% VOUT Load: 4.5 Ω, 10 nF -- 7.5 µs Vcl Output clamping voltage Iload = 1.5 A 41 45 49 V PWclampSP Clamp single pulse ATE test Iload = 1.5 A; single pulse - - 25 mJ |
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