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RT8167B bảng dữ liệu(PDF) 13 Page - Richtek Technology Corporation

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nhà sản xuất  RICHTEK [Richtek Technology Corporation]
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RT8167B
13
DS8167B-00
October 2011
www.richtek.com
Pin No.
Pin Name
Pin Function
32
EN
Voltage Regulator Enable Signal Input Pin.
33
BOOTA
GPU VR Bootstrap Power Pin. This pin powers the high side MOSFET drivers.
Connect this pin to the PHASEA pin with a bootstrap capacitor.
34
UGATEA
Upper Gate Driver of GPU VR. This pin drives the high side MOSFET of GPU
VR.
35
PHASEA
Switch Node of GPU VR. This pin is the return node of the high side MOSFET
driver for GPU VR. Connect this pin to the joint of the source of high side
MOSFET, drain of the low side MOSFET, and the output inductor.
36
LGATEA
Lower Gate Driver of GPU VR. This pin drives the low side MOSFET of GPU
VR.
37
PVCC
MOSFET Driver Power Supply Pin. Connect this pin to GND via a ceramic
capacitor larger than 1
μF.
38
LGATE1
Lower Gate Driver of CPU VR. This pin drives the low side MOSFET of CPU
VR.
39
PHASE1
Switch Node of CPU VR. This pin is the return node of the high side driver for
CPU VR. Connect this pin to the joint of the source of high side MOSFET, drain
of the low side MOSFET, and the output inductor.
40
UGATE1
Upper Gate Driver of CPU VR. This pin drives the high side MOSFET of CPU
VR.
41 (Exposed Pad)
GND
Ground of Low Side MOSFET Driver. The exposed pad must be soldered to a
large PCB and connected to GND for maximum power dissipation.



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