Datasheet

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R6
R11
Open
R12
Note1
R14
0.025
R13
R15
C3
C12
35V
U2
SI4435DY
R18
D2
BAS16
ACDRV24
ACN11
12 ACP
1
ACDET
22VCC
20
VHSP
D3
13 V
21
SRP
C6
16V
C7
35 V
PWM
L1
U3
SI4435DY R20
SRN
D5
Note 1
D6
Note 1
R22
R23
Note1
R24
R25
Note1
16
15
BATDEP
BATP
4
13
R16
C5
C4
150pF
10COMP
D1
MBRD640CTT4
D4
MBRD640CTT4
C11
35 V
R21
Note1
R19
Note1
C8
U4
SI4435DY
D9 BAS16
R26 100K
BATDRV
23
SYSTEM
R27
R28
Note1
Battery Plus
VS 18
AC Adapter
VREF7
ENABLE
ACSEL3
8
19 ALARM
ACPRES
2
C1
ENABLE
ACSEL
ALARM
ACPRES
5
6
SRSET
ACSET
R2
R10
Note1
R8
Note1
C10
180pF
14 IBAT
C13
1 nF
IBAT
R29
17
GND
9BATSET BATSET
100 kΩ
100 Ω
1 µ
F
100 Ω
10 Ω
33 µ
H
4.7 µ
F
1 µ
F
0.025 Ω
22 µ
F
100 Ω
4.7 µ
F
604 kΩ
Connect to GND
to Disable
100 kΩ
30 kΩ
4.7 µ
F
Note 1: R8 Sets AC Adapter Current Limit
R10 Sets Charge Current
R12 Sets AC ADAPTER Current Limit
R23 Sets the Battery Depleted Threshold
R25 Sets the Charge Regulation Voltage
R28 Sets System Break Before Make
R19 = R21, Sets Zero Volt Charge Current
bq24703
bq24702
Note1
604 kΩ
604 kΩ
Note1
Note1
C11 Optional, See Application Notes
C12 For Value, See Application Notes
C8 Value Depends on R21 and R19, See Application Notes
D5, D6 Refer to the Application Section
PROCESSOR’S
POWER SUPPLY
bq24702
bq24703
SLUS553E – MAY 2003 – REVISED OCTOBER 2007
APPLICATION DIAGRAM
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