NCP81174N Datasheet, PDF (1/18 Pages) ON Semiconductor – 4/3/2-Phase Synchronous Buck Controller

NCP81174N
4/3/2-Phase Synchronous
Buck Controller with Power
Saving Mode and PWM VID
Interface
The NCP81174N is a general−purpose multi−phase synchronous
buck controller. It combines differential voltage sensing, differential
phase current sensing, and PWM VID interface to provide accurate
regulated power for the computer or graphic controllers. It can
receive power saving command (PSI) from processors and operates in
single−phase diode emulation mode to obtain high efficiency in light
load. Dual−edge current mode multiphase PWM modulation ensures a
fast transient response with minimum possible capacitors.
Features
• Output Voltage up to 2.0 V with PWM VID Interface
• Support 1.8 V VID Interface
• Remote Differential Output Voltage Sense
• Differential Current Sense for Each Phase
• 200 kHz − 1000 kHz Switching Frequency
• PWMVID Frequency up to 5 MHz
• Power Saving Interface (PSI)
• Power Good Output
• Thermally Compensated Current Monitoring
• Over Current Protection
• Fast Transient Response
• Latched OVP and UVP Protections
• QFN−32, 5 x 5 mm, 0.5 mm Pitch Package
• This is a Pb−Free Device
Typical Applications
• GPU and CPU Power
• Graphics Card Applications
www.onsemi.com
1 32
QFN32
MN SUFFIX
CASE 488AM
MARKING DIAGRAM
1
81174N
AWLYYWWG
G
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device
Package Shipping^†
NCP81174NMNTXG QFN32 2500 / Tape &
(Pb−Free)
Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2016
1
March, 2016 − Rev. 0
Publication Order Number:
NCP81174N/D