L9377 データシートの表示（PDF） - STMicroelectronics
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L9377 Datasheet PDF : 9 Pages
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L9377
DIAGNOSTIC TABLE (Operating range: 4.5V ≤ VS ≤ 32V)
Conditions
EN
IN
Normal function
L
X
H
L
H
H
GND short
VOtyp < 0.55V
L
X
Load bypass
VO1,2 ≥ 1.25V
H
L
Open load
IOtyp < 320mA
H
H
Tj typ ≥ 175°C
Overtemperature (**)
X
L
X
H
Latched Over load IOmin > 5A
X
H
Reset over load latch
X
Out
off
off
on (*)
off
off
on (*)
off
off
off
D.C.
Diag.
L
L
H
H
H
L
H
L
L
D.C.
(*) for 4.5V ≤ VS < 6.5V, IO ≤ 2A diag. table is valid.
(**) If one diag. status shows the overtemp. recognition, in parallel this output will be switched OFF internally. The corresponding channel should
be switched OFF additional by its Input or ENABLE signal, otherwise the overload latch will be set after tDOL is passed. This behaviour will
be related to the overdrop sensing which will be used as over load recognition.
Figure 1: Diagnostic overload delay time
UI
5V
t
IO
IO SC
5A
IO UC
td OL
t
UD
5V
t
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