L6375S 데이터 시트보기 (PDF) - STMicroelectronics
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L6375S Datasheet PDF : 17 Pages
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Electrical specifications
L6375S
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
2.11
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)
Diagnostic truth table
Table 6. Diagnostic truth table
Diagnostic conditions
Input
Output Diag1
Diag2
Normal Operation
L
L
H
H
H
H
H
H
Open Load Condition (Io< Iold)
Short to VS
Short Circuit to Ground (IO = ISC) (1)
(pin ON-DELAY grounded)
L
L
H
H
H
H
L
H
L
H
L
H
H
H
L
H
H
X
H
H
L
L
H
H
Output DMOS Open
Overtemperature
Supply Undervoltage (VS< Vsth2)
L
L
H
H
H
L
L
H
L
L
H
L
H
L
H
L
L
L
L
L
H
L
L
L
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.
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