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TDE1898R Fiches technique(PDF) 4 Page - STMicroelectronics |
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TDE1898R Fiches technique(HTML) 4 Page - STMicroelectronics |
4 / 12 page Figure 1 DIAGNOSTIC TRUTH TABLE Diagnostic Conditions Input Output Diag1 Diag2 Normal Operation L H L H H H H H Open Load Condition (Io <Iold)L H L H H L H H Short to VS L H H H L L H H Short Circuit to Ground (IO =ISC) (**) TDE1897R TDE1898R H <H (*) H L HH L H H H H Output DMOS Open L H L L H L H H Overtemperature L H L L H H L L Supply Undervoltage (VS <Vsth1 in the falling phase of the supply voltage; VS <Vsth2 in the rising phase of the supply voltage) L H L L L L L L (*) According to the intervention of the current limiting block. (**) A cold lamp filament, or a capacitive load may activate the current limiting circuit of the IPS, when the IPS is initially turned on. TDE1897 uses Diag2 to signal such condition, TDE1898 does not. SOURCE DRAIN NDMOS DIODE Symbol Parameter Test Condition Min. Typ. Max. Unit Vfsd 2-3 Forward On Voltage @ Ifsd = 625mA 1 1.5 V Ifp 2-3 Forward Peak Current t = 10ms; d = 20% 2 A trr 2-3 Reverse Recovery Time If = 625mA di/dt = 25A/ µs 200 ns tfr 2-3 Forward Recovery Time 50 ns THERMAL CHARACTERISTICS (*) Θ Lim Junction Temp. Protect. 135 150 °C TH Thermal Hysteresis 30 °C SWITCHING CHARACTERISTICS (VS = 24V; RL =48 Ω) (*) ton Turn on Delay Time 100 µs toff Turn off Delay Time 20 µs td Input Switching to Diagnostic Valid 100 µs Note Vil < 0.8V, Vih > 2V @ (V+In > V–In); Minidip pin reference. (*) Not tested. TDE1897R - TDE1898R 4/12 |
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