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RT9644 Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part # RT9644
Description  ACPI Regulator/Controller for Dual Channel DDR Memory Systems
PDF  17 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9644 Datasheet(HTML) 2 Page - Richtek Technology Corporation

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RT9644/A
Preliminary
2
DS9644/A-01 August 2007
www.richtek.com
Pin Configurations
(TOP VIEW)
RT9644
VQFN-28L 6x6
RT9644A
Note :
RichTek Pb-free and Green products are :
}RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
}Suitable for use in SnPb or Pb-free soldering processes.
}100% matte tin (Sn) plating.
Ordering Information
Package Type
QV : VQFN-28L 6x6 (V-Type)
RT9644/A
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Two PWM Controller
One PWM Controller
5VSBY
S3#
P12V
GND
DDR_VTT
DDR_VTT
VDDQ
DRIVE4
REFADJ4
DRIVE3
FB3
FB4
COMP
FB
21
20
19
18
17
16
15
22
23
24
25
26
27
28
1
2
3
4
5
6
7
14
13
12
11
10
9
8
GND
29
5VSBY
S3#
P12V
GND
DDR_VTT
DDR_VTT
VDDQ
DRIVE3
FB3
PWM4
FB4
COMP4
COMP
FB
1
2
3
4
5
6
7
9
8
GND
22
23
24
25
26
27
28
21
20
19
18
17
16
15
14
13
12
10
11
29



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