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L6375D Fiches technique(PDF) 10 Page - STMicroelectronics |
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L6375D Fiches technique(HTML) 10 Page - STMicroelectronics |
10 / 16 page Electrical specifications L6375D 10/16 2.9 Diagnostic logic The operating conditions of the device are permanently monitored and the following occurrences are signalled via the DIAG1/DIAG2 open-drain output pins see diagnostic Truth Table. ● Short Circuit versus ground. ● Short Circuit versus VS. ● Under Voltage(UV) ● Over Temperature (OVT) ● Open Load, if the output current is less than 3mA (typical value). 2.10 Demagnetization of inductive loads An internal zener diode, limiting the voltage across the Power MOS to between 50 and 60V (Vcl), provides safe and fast demagnetization of inductive loads without external clamping devices. The maximum energy that can be absorbed from an inductive load is specified as 200mJ (at TJ = 85°C) 2.11 Diagnostic truth table Table 7. 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) (1) (pin ON-DELAY grounded) 1. A cold lamp filament, or a capacitive load may activate the current limiting circuit of the IPS, when the IPS is initially turned on. H L X 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< Vsth2) L H L L L L L L |
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