ncv8881 ON Semiconductor, ncv8881 Datasheet - Page 10

• Manufacturer Part Number: ncv8881
• Description: Ncv8881 1.5a Automotive Buck Regulator With Watchdog
• Manufacturer: ON Semiconductor

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