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L9377 Datasheet(PDF) 4 Page - STMicroelectronics

Part No. L9377
Description  DUAL INTELLIGENT POWER LOW SIDE SWITCH
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9377 Datasheet(HTML) 4 Page - STMicroelectronics

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DIAGNOSTIC TABLE (Operating range: 4.5V
≤ VS ≤ 32V)
Conditions
EN
IN
Out
Diag.
Normal function
L
H
H
X
L
H
off
off
on (*)
L
L
H
GND short
VOtyp < 0.55V
L
X
off
H
Load bypass
VO1,2
≥ 1.25V
H
L
off
H
Open load
IOtyp < 320mA
H
H
on (*)
L
Tj typ
≥ 175°C
Overtemperature (**)
X
X
L
H
off
off
H
L
Latched Over load IOmin > 5A
X
H
off
L
Reset over load latch
X
D.C.
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.
5V
t
t
UI
IO SC
5V
t
5A
td OL
UD
IO
IO UC
Figure 1: Diagnostic overload delay time
L9377
4/9


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