BQ24707 Datasheet, PDF (12/36 Pages) Texas Instruments – 1-4 Cell Li+ Battery SMBus Charge Controller With Independent Comparator and Advanced Circuit Protection

bq24707
bq24707A
SLUSA78B – JULY 2010 – REVISED MARCH 2011
FUNCTIONAL BLOCK DIAGRAM
VCC 20
ACDET 6
3.75V
UVLO
0.6V
WAKEUP
bq24707 and bq24707A Block Diagram
** Threshold or deglitch time is adjustable by ChargeOption()
EN_REGN
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ACOK 5
ACGOOD
2.4V
VCC_SRN
ACOK_DRV
1.3s rising deglitch** (bq24707)
1.2ms rising deglitch** (bq24707A)
WATCHDOG
TIMER
175s **
WATCHDOG
TIMEOUT
EN_CHRG
ACP 2
ACN 1
IOUT 7
ILIM 10
SRP ¹³
SRN 12
VREF_IAC
20X
1X
MUX
IOUT_SEL
20X
VREF_ICHG
VFB
4mA in
BATOVP
VREF_VREG
WAKEUP
FBO
10uA
SDA 8
SCL 9
SMBus Interface
ChargeOption()
ChargeCurrent()
ChargeVoltage ()
InputCurrent()
ManufactureID()
DeviceID()
DAC_VALID
CHARGE_INHIBIT
VREF_VREG
VREF_ICHG
VREF_IAC
IOUT_SEL
IFAULT
Type III
Compensation
EAI
ACOK_DRV
CHARGE_INHIBIT
EAO
DAC_VALID
PWM
HSON
200mV
RAMP
Frequency **
ILIM
CE
105mV
EN_REGN _REGN
LDO
LSON
Tj
155?C
SRP-SRN
60mV/90mV/120mV
TSHUT
Driver Logic
CHG_OCP
5mV
SRP-SRN
CHG_UCP
1.25mV ^LIGHT_LOAD
SRP-SRN
CMPOUT 3
CMPIN 4
50kΩ
CMPOUT_DRV
0.6V **
ACP-PH
700mV **
IFAULT_HI
PH-GND
110mV
IFAULT_LO
ACP-ACN
1.66xVREF_IAC **
ACOC
2000kΩ
ACP-ACN
1.08xVREF_IAC
FAST_DPM
4.3V
BTST-PH
REFRESH
VFB
104%VREF_VREG
BATOVP
2.5V
SRN
BAT_LOWV
VCC
SRN+245mV
VCC-SRN
11 IFAULT
17 BTST
18 HIDRV
19 PHASE
16 REGN
15 LODRV
14 GND
Figure 15. Functional Block Diagram for bq24707 and bq24707A
12
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