BQ24610 Datasheet, PDF (13/33 Pages) Texas Instruments – Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger with System Power Selector and Low Iq

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BLOCK DIAGRAM
bq24610
bq24617
SLUS892 – DECEMBER 2009
VREF
CE
ACP
ACN
ACSET
VFB
SRP
SRN
ISET1
ISET2
VREF
INTERNAL
REFERENCE
ACN ACN-6 V ACN-6 V
LDO
3.3 V
LDO
VCC
SLEEP
UVLO
bq24610/17
VCC
-
SRN+100 mV
+
VCC
-
VUVLO
+
ACN
+
SRN+200 mV -
SLEEP
UVLO
ACN-SRN
ACOV
SYSTEM
POWER
SELECTOR
LOGIC
VCC-6 V VCC-6 V
LDO
VCC
VCC-6V
ACN
1M
ACN-6V
+
20X
-
V(ACP-ACN)
+
-
2.1 V
+
20X
V(SRP-SRN)
-
IBAT_ REG
CHARGE
OR
DISCHARGE
8 mA 2 mA
FAULT
20µA
COMP
ERROR
AMPLIFIER
-
+
1V
CE
PWM
BAT _OVP
20 µA
+
SRP-SRN
-
5 mV
+
-
SYNCH
BTST
PH +
4.2V
V(SRP-SRN)
160% X IBAT_REG
- REFRESH
+
CHG_OCP
PWM
CONTROL
LOGIC
LEVEL
SHIFTER
VCC
CE
6 V LDO
ISET1
ISET2
LOWV
IBAT_ REG
TTC Safety
Timer
IC Tj +
FAULT
TSHUT
CHARGE
STAT1
145 degC ^-
BAT
104% X VBAT_REG
-
VFB
+
+
-
1.55V
TTC -
0.4 V +
BAT _OVP
STATE
MACHINE
LOGIC
DISABLE
TMR/TERM
BATTERY
DETECTION
LOGIC
STAT2
PG
TTC
VCC +
-
VACOV
+
-
ACOV
DISCHARGE
LTF
VFB
2.05 V
+
-
-
RCHRG
+
V(SRP - SRN) +
ISET2 -
TERM
RCHRG
TERM
SUSPEND
HTF
TCO
TERMINATE CHARGE
VREF
-
+
+
-
+
-
VCC
ACDRV
BATDRV
BTST
HIDRV
PH
REGN
LODRV
GND
STAT 1
STAT 2
PG
TTC
TS
Figure 14. Functional Block Diagram for bq24610/7
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): bq24610 bq24617
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