bq24610
bq24617
SLUS892 –DECEMBER 2009
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
DESCRIPTION (CONTINUED)
The bq24610/7 controls external switches to prevent battery discharge back to the input, connect the adapter to
the system, and to connect the battery to the system using 6-V gate drives for better system efficiency. The
bq24610/7 features Dynamic Power Management (DPM). These features reduce battery charge current when
the input power limit is reached to avoid overloading the AC adapter when supplying the load and the battery
charger simultaneously. A highly-accurate current-sense amplifier enables precise measurement of input current
from the AC adapter to monitor the overall system power.
TYPICAL APPLICATION
Q1 (ACFET)
SI7617DN
R17
10Ω
SYSTEM
ADAPTER+
ADAPTER-
P
P
C9
10 μF
RAC
0.010 W
C8
10 µF
R20
2Ω
R14
100 kW
Q2 (ACFET)
SI7616DN
C14
0.1 mF
C16
2.2μF
C15
0.1 µF
ACN
ACP
C3
0.1 µF
C7
1µF
VCC
C2
R15
100 kW
0.1 µF
P
VREF
Q3 (BATFET)
SI7617DN
BATDRV
HIDRV
ACDRV
R19
1 kΩ
R18
1 kΩ
R3
100 kW
R5
100 kW
R7
100 kW
Q4
SIS412DN
N
RSR
0.010
ISET1
ISET2
ACSET
PH
L1
W
VBAT
PACK+
PACK-
BTST
C6
0.1 µF
6.8 µH*
D1
REGN
BAT54
R4
32.4 kW
R6
10 kW
bq24610
bq24617
R8
22.1 kW
C5
1 µF
C12 C13
10 µF* 10 µF*
Q5
SIS412DN
VREF
CE
LODRV
GND
N
C4
R2
500 kΩ
Cff
22 pF
1 µF
C10
0.1 µF
C11
0.1 µF
R11 10 kW
D2
D3
D4
STAT1
STAT2
PG
SRP
SRN
R1
100
R12 10 kW
R13 10 kW
R16
kW
ADAPTER
+
VREF
R9
VFB
TTC
Pack
Thermistor
Sense
103AT
9.31 kW
100 W
TS
CTTC
PwrPad
C1
0.1 μF
R10
0.056 μF
430 kW
VIN=19V, 3-cell, Iadapter_limit=4A, Icharge=3A, Ipre-charge= Iterm=0.3A, 5 hour saftey timer
Figure 1. Typical System Schematic
ORDERING INFORMATION
ODERING NUMBER
(Tape andReel)
PART NUMBER
IC MARKING
PACKAGE
QUANTITY
bq24610RGER
bq24610RGET
bq24617RGER
bq24617RGET
3000
250
bq24610
OAS
24-PIN 4×4 mm2 QFN
3000
250
bq24617
OFB
2
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Product Folder Link(s): bq24610 bq24617
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