ISL88731C
VCC
REF
DCIN
LINEAR
REGULATOR
REFERENCE
VDDP
VREF
11
DACV
DACS
DACI
VDDSMB
DACV
DACS
DACI
6
6
SMBUS
SDA
SCL
ACOK
+
-
EN
ACIN
ICM
BUFF
CSSP
CSSN
LEVEL
SHIFTER
20x
-
EN
GMS
DACS
DACI
+
BOOT
ICOMP
CSO
UGATE
PHASE
CSOP
CSON
LEVEL
SHIFTER
20x
-
GMI
DC/DC
CONVERTER
+
LVB
VDDP
LVB
DACV
+
GMV
LGATE
-
PGND
GND
VFB
500k 100k
EN
CSSP
VCOMP
FIGURE 3. FUNCTIONAL BLOCK DIAGRAM
RS1
AC ADAPTER
TO SYSTEM
CSSP
ACIN
CSSN
UGATE
PHASE
RS2
TO BATTERY
DCIN
ISL88731C
BOOT
LGATE
CSOP
CSON
VFB
AGND
ICOMP
VCOMP
VDDP
PGND
PGND
VREF
ACOK
ICM
SDA
SCL
VDDSMB
VCC
GND
AGND
FIGURE 4. TYPICAL APPLICATION CIRCUIT
FN6978.0
March 8, 2010
2
INTERSIL [ Intersil ]
