Datasheet

VCC
REGN
BTST
HIDRV
PHASE
LODRV
GND
SRP
SRN
Q4
Sis412DN
L1
4.7µH
SYSTEM
C10
10µF
RSR
10m?
R1
430k
R2
66.5k
C2
0.1µF
U1
bq24707
bq24707A
C8
10uF
Q3
Sis412DN
Q5 (BATFET)
Si4435DDY
C7
0.047µF
Adapter +
RAC 10m?
Pack +
C6
1µF
HOST
Dig I/O
SMBus
+3.3V
C4
100p
R4
10k
R5
10k
R7
316k
ACN
ACP
ACDET
ILIM
SDA
SCL
ACOK
IFAULT
CMPOUT
CMPIN
IOUT
Ci
2.2µF
Ri
2?
R9
10Ω
R3
10k
R8
100k
D1
BAT54
C9
10uF
C11
10µF
Pack -
C3
0.1µF
C5
1µF
C1
0.1µF
Total
Csys
220µF
Adapter -
ADC
Q1 (RBFET)
Si4435DDY
Q2 (ACFET)
Si4435DDY
PowerPad
R6
10k
Controlled
By Host
Controlled
By Host
D2
RB751V40
If no adapter,
and Iout is
needed, this
rail is on
+1.5V
R10
10k
R11
39.2k
R12
100k
R13
3.01M
C13
0.1µF
C14
0.1µF
R14
10Ω
R15
7.5Ω
*
*
bq24707
bq24707A
SLUSA78B –JULY 2010– REVISED MARCH 2011 www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
TYPICAL APPLICATION
F
s
= 750kHz, I
adpt
= 4.096A, I
chrg
= 2.944A, I
lim
= 4A, V
chrg
= 12.592V, 90W adapter and 3S2P battery pack
See the application information about negative output voltage protection for hard shorts on battery to ground or
battery reverse connection.
Figure 1. Typical System Schematic
ORDERING INFORMATION
ORDERING NUMBER
PART NUMBER IC MARKING PACKAGE QUANTITY
(Tape and Reel)
bq24707RGRR 3000
bq24707 BQ707 20-PIN 3.5 x 3.5mm
2
QFN
bq24707RGRT 250
bq24707ARGRR 3000
bq24707A BQ07A 20-PIN 3.5 x 3.5mm
2
QFN
bq24707ARGRT 250
COMPARISON TABLE
Condition bq24707 bq24707A
ACOK default delay 1.3s 1.2ms
Suggest fully charged battery ChargeVoltage() setting
full scale charge voltage(12.592V for 3S battery) 0V
after termination
Suggest fully charged battery ChargeCurrent() setting
0A 0A
after termination
2 Submit Documentation Feedback © 2010–2011, Texas Instruments Incorporated
Product Folder Link(s): bq24707 bq24707A