SP6133 Datasheet, PDF (17/20 Pages) Sipex Corporation – Synchronous Buck Controller

APPLICATION INFORMATION
C5
R4
0.1uF 10 Ohm
DBST
BAT54WS
C1
68uF
C2
68uF
CVCC
10uF
R3 10K
POWERGOOD
ENABLE
VIN
VCC
BST
GH
PWRGD
SWN
UVIN
EN ^SP6133
GL
GND
CBST
0.1uF
MT, Si4304DY
3.7 mOhm, 30V
INTER-TECHNICAL, SC4015-1R2M
1.2uH, 17A, 4.37mOhm
MB, Si4304DY
3.7 mOhm, 30V
RS1
5.11K
RS2
5.11K
CF1
22pF
CP1
22 pF
ISP
PGND
ISN
COMP
SS
VFB
CZ3
180pF
CSS
47nF
RZ3
2.87K
CZ2
560pF
RZ2
22.6k
CSP
6.8nF
CS
0.1uF
R1
68.1K, 1%
R2
21.5K, 1%
VIN
C3
68uF _4.5-5.5V
GND
VOUT
C4
68uF _3.3V
0-10A
GND
Figure 13. SP6133: 5V Input Buck Regulator
C5
0.1uF
VAUX=12V
DBST
CVCC
10uF
BAT54WS
CBST
0.1uF
VIN
BST
VCC
GH
R3 10K
POWERGOOD
ENABLE
PWRGD
SWN
UVIN
EN ^SP6133
GL
GND
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 14. SP6133: 3.3V Input Buck Regulator with auxiliary 12V bias
Oct 24-06 Rev L
SP6133 Synchronous Buck Controller
17
© 2006 Sipex Corporation