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ISL88731 Datasheet, PDF (2/22 Pages) Intersil Corporation – SMBus Level 2 Battery Charger
ISL88731
DCIN
VCC
VDDSMB
SDA
SCL
CSSP
CSSN
ICOMP
CSOP
CSON
VFB
VCOMP
11
6
SMBUS
6
DACV
DACS
DACI
EN
LINEAR
DACV REGULATOR
DACS
DACI
VDDP
REFERENCE
REF +
-
LEVEL
SHIFTER
20x
-
GMS
DACS +
LEVEL
SHIFTER
20x
-
GMI
DACI +
DACV +
GMV
-
500k 100k
EN
BUFF
EN
CSO
DC-DC
CONVERTER
LVB LVB
CSSP
VREF
ACOK
ACIN
ICM
BOOT
UGATE
PHASE
VDDP
LGATE
PGND
GND
FIGURE 1. FUNCTIONAL BLOCK DIAGRAM
AC ADAPTER
RS1
TO SYSTEM
AGND
CSSP
ACIN
DCIN
CSSN
UGATE
PHASE
ISL88731
BOOT
LGATE
ICOMP
VCOMP
VDDP
CSOP
CSON
VFB
PGND
VREF
ACOK
ICM
SDA
SCL
VCC
GND
VDDSMB
AGND
FIGURE 2. TYPICAL APPLICATION CIRCUIT
2
RS2
TO BATTERY
PGND
FN9258.1
January 21, 2009