isl8033 Intersil Corporation, isl8033 Datasheet - Page 3

• Manufacturer Part Number: isl8033
• Description: Dual 3a Low Quiescent Current High Efficiency Synchronous Buck Regulator
• Manufacturer: Intersil Corporation

Block Diagram
S G N D
S G N D
EN 1
P G 1
EN 2
P G 2
FB 1
FB 2
1.6k
1.6k
SH U TD O W N
S H U TD O W N
B A N D G A P
B A N D G A P
1M
1M
V IN
V IN
0.736V
0.736V
S TA R T
0.864V
S TA R T
0.864V
SO FT-
SO FT-
3
STA
0.8V
R T
0.8V
S H U TD O W N
3pF
3pF
TH ER M A L
SLO P E
SLO P E
C O M P
C O M P
0.5V
0.5V
+
D E LA Y
+
D E LA Y
+
+
+
+
EA M P
1m s
1m s
E A M P
+
+
27pF
SC P
390k
S C P
S H U TD O W N
27pF
390k
+
+
ISL8033, ISL8033A
C O M P
C O M P
+
+
O S C ILLA TO R
0.3pF
0.3pF
TH R E S H O LD
LO G IC
C O N TR O LLER
C O N TR O LLE R
PR O TEC TIO N
O C P
P R O TEC TIO N
D R IV E R
D R IV E R
S H U TD O W N
LO G IC
S H U TD O W N
LO G IC
P W M
P W M
C S A 1
C S A 2
+ +
+ +
October 21, 2010
V IN
LX1
P G N D
S Y N C
IS ET
V IN
LX2
P G N D
FN6854.1