SC2446 Semtech Corporation, SC2446 Datasheet - Page 27

• Manufacturer Part Number: SC2446
• Description: Dual-Phase Single or Two Output Synchronous Step-Down Controller
• Manufacturer: Semtech Corporation

POWER MANAGEMENT
Application Information (Cont.)
2004 Semtech Corp.
C63
C81
VTT
VTT
Figure 21
+
+
C59
C77
R49
R51
R64
R66
RCS+
RCS+
C60
C78
R53
R68
L7
L9
R45
R60
C67
C85
C65
C83
CFILTER
RFILTER
CFILTER
RFILTER
DDR Memory Applications (Common Input Voltage)
VDDQ
DDR Memory Applications (Separate Input Voltage)
VDDQ
VDDQ
Q13
Q15
Q17
Q19
R54
R69
R56
R71
R43
R47
R58
R62
C70
C88
VDDQ
VIN
SYNC
SYNC
RCS-
RCS-
C57
C75
D7
D9
C71
C89
Figure 22
PVCC
BST2
GDH2
GDL2
VPN2
CS2+
CS2-
IN2-
COMP2
REFIN
VIN2
SYNC
SS1/EN1
SS2/EN2
PVCC
BST2
GDH2
GDL2
VPN2
CS2+
CS2-
IN2-
COMP2
REFIN
VIN2
SYNC
SS1/EN1
SS2/EN2
C56
SC2446
C74
SC2446
27
VIN
U1
VIN
U1
REFOUT
REFOUT
COMP1
COMP1
GDH1
PGND
AGND
AVCC
GDH1
PGND
AGND
AVCC
GDL1
VPN1
CS1+
GDL1
VPN1
CS1+
BST1
CS1-
Rosc
BST1
CS1-
Rosc
REF
REF
IN1-
IN1-
C72
C90
C68
R57
C86
R72
RCS-
RCS-
C58
C76
D8
D10
C73
C91
R44
R48
R59
R63
C69
C87
C66
VIN
C84
VIN
Q14
Q16
Q18
Q20
CFILTER
RFILTER
CFILTER
RFILTER
R55
R70
R46
R61
www.DataSheet4U.com
L8
L10
RCS+
RCS+
C61
C79
www.semtech.com
SC2446
R50
R65
R52
R67
C62
C80
VDDQ
VDDQ
+
+
C64
C82