© Semiconductor Components Industries, LLC, 2009
August, 2009 − Rev. 4
1 Publication Order Number:
NCP112/D
NCP112
Supervisory IC for Desktop
Power Supply Monitoring
The NCP112 is a highly integrated supervisory circuit that
incorporates all the functions necessary for monitoring and
controlling a multi−output switch−mode power supply system. The
NCP112 provides an ability to monitor the status of the power supply
outputs and communicate it to the system controller. The
programmable output delays protect against spurious fault
indicators.
Features
• Under and Overvoltage Protection for 3.3 V, 5.0 V and 12 V
Outputs
• Additional Adjustable Overvoltage Protection Input
• Built−in Hysteresis on all Input Pins
• Programmable Undervoltage Blanking During Power−Up
• Fault Output with 20 mA Sink Capability
• Programmable Remote On/Off Delay Time
• Programmable Power Good Delay Time
• Precision Voltage Reference with 20 mA Source Capability
• Optimized for Low−Cost 100 nF Capacitors
• Enhanced Replacement to the TSM112
• This is a Pb−Free Device
Typical Applications
• Personal Computer Switch Mode Power Supply Monitoring
• Multi−Output Power Supplies Requiring System Supervision
http://onsemi.com
PDIP−14
P SUFFIX
CASE 646
SOIC−14
D SUFFIX
CASE 751A
PIN CONNECTIONS
VS33
VS5
VS12
ADJ
PGI
CTUV
GND
CTREMOTE
REMOTE
VREF
CTPG
PGO
FAULT
VCC
PDIP−14, SOIC−14
MARKING
DIAGRAMS
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
ORDERING INFORMATION
NCP112P
AWLYYWWG
1
14
1
NCP112DG
AWLYWW
1
14
1
A = Assembly Location
WL = Wafer Lot
Y, YY = Year
WW = Work Week
G = Pb−Free Package
