SP6133 Datasheet, PDF (16/20 Pages) Sipex Corporation – Synchronous Buck Controller

APPLICATION INFORMATION
C5
0.1uF
DBST
CVCC
10uF
BAT54WS
VIN BST
R4
9.09K, 1%
R3 10K
POWERGOOD
R5
5K, 1%
ENABLE
VCC
GH
PWRGD SWN
UVIN
EN ^SP6133
GL
GND
CBST
0.1uF
MT, Si4394DY
9.75 mOhm, 30V
SC5018-2R7M
2.7uH, 15A, 4.1mOhm
MB, Si4320DY
4 mOhm, 30V
RS1
5.11K
RS2
5.11K
VIN
C1
C2
22uF
22uF _7-15V
GND
VOUT
C3
100uF
C4
100uF _3.3V
0-10A
CF1
22pF
ISP
PGND
ISN
CP1
39 pF
COMP
SS
VFB
CZ3
560pF
CSS
47nF
RZ3
1K
CZ2
1500pF
RZ2
23.2K
CSP
6.8nF
CS
0.1uF
GND
R1
68.1K, 1%
R2
21.5K, 1%
Figure 11: SP6133 circuit showing wide input range
C5
0.1uF
VAUX=5V
DBST
CVCC
10uF
BAT54WS
VIN
BST
VCC
GH
R3 10K
POWERGOOD
ENABLE
PWRGD
SWN
UVIN
EN ^SP6133
GL
GND
CBST
0.1uF
MT, Si4304DY
3.7 mOhm, 30V
C1
100uF
INTER-TECHNICAL, SC4015-R75M
0.75uH, 20A, 3.25mOhm
MB, Si4304DY
3.7 mOhm, 30V
RS1
5.11K
RS2
5.11K
C3
68uF
VIN
C2
100uF _3-3.6V
GND
VOUT
C4
68uF _1.8V
0-10A
CF1
22pF
CP1
15 pF
ISP
PGND
ISN
COMP
SS
VFB
CZ3
220pF
CSS
47nF
RZ3
2.55K
CZ2
390pF
RZ2
37.4K
CSP
6.8nF
CS
0.1uF
R1
68.1K, 1%
R2
54.9K, 1%
GND
Figure 12. SP6133: 3.3V Input Buck Regulator with auxiliary 5V
Oct 24-06 Rev L
SP6133 Synchronous Buck Controller
16
© 2006 Sipex Corporation