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NCP81278 Datasheet, PDF (1/13 Pages) ON Semiconductor – Compact 2-Phase Synchronous Buck Controller with Integrated Gate Drivers and PWM VID Interface | |||
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NCP81278
Compact 2-Phase
Synchronous Buck
Controller with Integrated
Gate Drivers and PWM VID
Interface
The NCP81278, a generalâpurpose twoâphase synchronous buck
controller, integrates gate drivers and PWM VID interface in a
QFNâ20 package and provides a compactâfootprint power
management solution for new generation computing processors. It has
a programmable power save interface (PSI) and is able to operate in
1âphase diode emulation mode to obtain high efficiency in lightâload
condition. Operating in high switching frequency up to 800 kHz
allows employing small size inductor and capacitors. The part is able
to support allâceramicâcapacitor applications.
Features
⢠3.6 V to 24 V Input Voltage Range
⢠Output Voltage up to 2.0 V with PWM VID Interface
⢠Differential Output Voltage Sense
⢠Integrated Gate Drivers
⢠200 kHz ~ 800 kHz Switching Frequency
⢠Power Saving Interface (PSI)
⢠Support both 3.3 V and 1.8 V VID
⢠Power Good Output
⢠Programmable Over Current Protection
⢠Over Voltage Protection
⢠Under Voltage Protection
⢠Thermal Shutdown Protection
⢠QFN20, 3x3 mm, 0.4 mm Pitch Package
Typical Applications
⢠GPU and CPU Power
⢠Graphics Card Applications
⢠Desktop and Notebook Applications
www.onsemi.com
QFN20
CASE 485BC
MARKING DIAGRAM
81278
ALYWG
G
81278
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbâFree Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
1
BST1
HG1
EN
PSI
VID
GND
BST2
HG2
PGOOD
COMP/ILMT
FB
(Top View)
ORDERING INFORMATION
Device
NCP81278MNTXG
Package
QFN20
(PbâFree)
Shippingâ
4,000 /
Tape & Reel
â For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2016
1
May, 2016 â Rev. 3
Publication Order Number:
NCP81278/D
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