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NCV8881 Datasheet(PDF) 10 Page - ON Semiconductor

Part # NCV8881
Description  1.5A Automotive Buck Regulator with Watchdog
Download  33 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCV8881 Datasheet(HTML) 10 Page - ON Semiconductor

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NCV8881
http://onsemi.com
10
FAULT RESPONSES
INPUTS
RESPONSE TO A SINGLE FAULT EVENT
FULL OPERATION
RESTORED BY:
FAULT EVENT
EN
EN Latch
5P0
8P5
SMPS
RESB
VIN Undervoltage
L
UNLATCH
SHUTDOWN
SHUTDOWN
SHUTDOWN
LOW
VIN > UVLO, EN
High
VIN Undervoltage
H
UNLATCH
SHUTDOWN
SHUTDOWN
SHUTDOWN
LOW
VIN > UVLO
VIN Overvoltage
L
Stays Latched
SHUTDOWN
SHUTDOWN
SHUTDOWN
LOW
VIN < OV Threshold
VIN Overvoltage
H
Stays Latched
SHUTDOWN
SHUTDOWN
SHUTDOWN
LOW
VIN < OV Threshold
Thermal Shutdown
L
Stays Latched
SHUTDOWN
SHUTDOWN
SHUTDOWN
LOW
Decrease Temp
Thermal Shutdown
H
Stays Latched
SHUTDOWN
SHUTDOWN
SHUTDOWN
LOW
Decrease Temp
5P0 Out of Regulation
L
Stays Latched Current limited
Stays ON
Stays ON
No Effect
Remove Overload
5P0 Out of Regulation
H
Stays Latched Current limited
Stays ON
Stays ON
No Effect
Remove Overload
8P5 Out of Regulation
L
Stays Latched
Stays ON
Current limited
Stays ON
No Effect
Remove Overload
8P5 Out of Regulation
H
Stays Latched
Stays ON
Current limited
Stays ON
No Effect
Remove Overload
SMPS Out of Regulation
L
UNLATCH
SHUTDOWN
SHUTDOWN
SHUTDOWN
LOW
EN High
SMPS Out of Regulation
H
Stays Latched
Stays ON
Stays ON
Stays ON
LOW
Remove Overload
SMPS shorted to ground
L
UNLATCH
SHUTDOWN
SHUTDOWN
SHUTDOWN
LOW
EN High
SMPS shorted to ground
H
UNLATCH
Stays ON
Stays ON
Latched OFF
LOW
EN Low, then High
Watchdog Signal Invalid
L
UNLATCH
SHUTDOWN
SHUTDOWN
SHUTDOWN
LOW
EN High
Watchdog Signal Invalid
H
Stays Latched
Stays ON
Stays ON
Stays ON
Pulses Low
Apply Valid WDI


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