MAX8568B Maxim Integrated Products, MAX8568B Datasheet - Page 16

• Manufacturer Part Number: MAX8568B
• Description: (MAX8568A/B) Complete Backup-Management ICs
• Manufacturer: Maxim Integrated Products

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Complete Backup-Management ICs
for Lithium and NiMH Batteries
Figure 7. Typical Application Circuit
16
______________________________________________________________________________________
MAIN BATTERY
2.8V TO 5.5V
I/O OUT
3.3V, 50mA
I/O IN
MEM OUT
2.5V, 10mA
MEM IN
Q1
Q2
100kΩ
100kΩ
BACKUP BATTERY
R3
R4
10µH
OPEN
0Ω
R1
R2
L1
4.7µF
4.7µF
10µF
10µF
C3
C1
C2
C4
10
1
2
4
5
3
7
6
8
IN
BK
LX
BKSU
PGND
BKV
OD1
LDO
OD2
MAX8568A
TERMV
STRTV
CHGI
INOK
NI/LI
GND
REF
16
15
14
13
11
9
12
R5
169kΩ
NI
C5
0.22µF
1.2MΩ
LI
R8
R6
50kΩ
R7
0Ω
BATTERY
MAIN
R9
357kΩ
R10
1MΩ
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