Datasheet

SW
bq24155
CHARGECONTROL,
TIMERandDISPLAY
LOGIC
*
Sleep
CSOUT
CSIN
STAT
PGND
SW
PGND
SCL
NMOS
NMOS
NMOS
PMID
SDA
(I
2
CControl)
Decoder
DAC
Q2
Q3
VREF
PMID
Q1
BOOT
REFERNCES
& BIAS
PMID
VBUS
SW
V
PMID
PGND
VBUS
V
PMID
ISEL
AUXPWR
I
SHORT
VREF
LINEAR _CHG
+
-
-
+
-
-
+
-
+
-
T
J
T
CF
I
OCHARGE
V
OREG
VREF
Charge
Pump
VREF1
I
IN_
LIMIT
OSC
+
-
V
OVP
_IN
V
BUS
V
BUS
+
-
V
UVLO
V
BUS
+
V
IN(
MIN)
V
BUS
+
-
T
J
T
SHTDWN
CBC
Current
Limiting
PWM
Controller
I
LIMIT
+
-
V
BAT
V
BUS
VBAT
VOUT
VCSIN
*
BatteryOVP
+
-
V
OUT
V
OVP
VBUSUVLO
PoorInput
VBUSOVP
Thermal
Shutdown
*
Recharge
+
-
V
OUT
V
OREG
-V
RCH
*
SignalDeglitched
+
-
-
V
OUT
V
CSIN
I
TERM
*
PWM_CHG
*
PWMCharge
Mode
+
-
V
BAT
V
SHORT
Termination
VREF1
bq24155
www.ti.com SLUS942 –FEBRUARY 2010
FUNCTIONAL BLOCK DIAGRAM (Charge Mode)
Figure 11. Function Block Diagram of bq24155 in Charge Mode
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