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ON Semiconductor - 2-Phase Synchronous Buck Controller

Numéro de référence NCP81172
Description 2-Phase Synchronous Buck Controller
Fabricant ON Semiconductor 
Logo ON Semiconductor 





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NCP81172 fiche technique
NCP81172
2-Phase Synchronous Buck
Controller with Integrated
Gate Drivers and PWM VID
Interface
The NCP81172, a generalpurpose twophase synchronous buck
controller, integrates gate drivers and PWM VID interface in a
QFN24 package and provides a compactfootprint power
management solution for new generation computing processors. It
receives power save command (PSI) from processors and operates in
1phase diode emulation mode to obtain high efficiency in lightload
condition. Operating in high switching frequency up to 800 kHz
allows employing small size inductor and capacitors. The part is able
to support allceramiccapacitor applications.
Features
4.5 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)
Power Good Output
Programmable Over Current Protection
Over Voltage Protection
Under Voltage Protection
Temperature Sense and Alert Output
Thermal Shutdown Protection
QFN24, 4 x 4 mm, 0.5 mm Pitch Package
This is a PbFree Device
Typical Applications
GPU and CPU Power
Graphics Card Applications
Desktop and Notebook Applications
http://onsemi.com
1 24
QFN24
CASE 485L
MARKING DIAGRAM
81172
ALYWG
G
81172
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbFree Package
PINOUT
18 17 16 15 14 13
19 PH2
20 LG2
21 PVCC
22 PGND
23 LG1
24 PH1
25
GND
COMP 12
FB 11
FBRTN 10
FS 9
VREF 8
REFIN 7
123456
(Top View)
ORDERING INFORMATION
Device
Package
Shipping
NCP81172MNTXG QFN24
(PbFree)
4000 / Tape &
Reel
†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, 2013
April, 2013 Rev. 1
1
Publication Order Number:
NCP81172/D

PagesPages 14
Télécharger [ NCP81172 ]


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