MAX8568B Maxim Integrated Products, MAX8568B Datasheet - Page 2

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

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ABSOLUTE MAXIMUM RATINGS
IN, BK, BKSU, OD1, OD2 to GND.........................-0.3V to +6.0V
BKV, LDO, NI/LI to GND.........................-0.3V to (V
REF, CHGI, INOK, TERMV, STRTV to GND...-0.3V to (V
PGND to GND ......................................................-0.3V to + 0.3V
LX Current ......................................................................0.9A
Complete Backup-Management ICs
for Lithium and NiMH Batteries
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 7, V
R5 = 250kΩ, T
2
IN Voltage Range
IN Operating Current
CHGI Current Limit
CHGI Bias Voltage
CHGI Resistor Range
BK Charge Voltage Limit
BK Reverse Leakage Current to IN
NiMH Mode BK High Threshold Voltage,
V
NiMH Mode BK Low Threshold Voltage,
V
TERMV Input Current
STRTV Input Current
REF Output Voltage
REF Load Regulation
REF Line Regulation
INOK Threshold Voltage
INOK Input Current
NI/LI Logic-Level High
NI/LI Logic-Level Low
BK(NIHI)
BK(NILO)
_______________________________________________________________________________________
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
PARAMETER
IN
= V
INOK
= 3.6V, V
BK
= 1.4V, V
Charger off, V
Charger on, not including charge current
R
V
V
V
V
V
V
V
V
V
I
I
V
V
V
V
V
V
BKSU
REF
REF
CHGI
BK
IN
IN
IN
IN
TERMV
STRTV
TERMV
STRTV
IN
INOK
INOK
INOK
BKSU
BKSU
IN
= 5.5V, V
= 3.8V, V
= V
= 0V
= 3V to 5.5V, I
= 1.3V
= 1µA
= 1µA to 50µA
NI/LI
+ 0.3V)
+ 0.3V)
falling
rising
= 2V
= 169kΩ, V
= 3.3V
= 3.3V
NI/LI
= 1.2V
= 1.1V
= 1.2V
= 1.1V
RMS
= V
= 3.6V
NI/LI
NI/LI
INOK
BKSU
CONDITIONS
= 0V
= 0V, V
REF
BK
= 1.5V
Continuous Power Dissipation (T
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
= 3.3V, V
= 1.3V
16-Pin 3mm x 3mm Thin QFN
(derate 15.6mW/°C above +70°C) .............................1250mW
= 1µA
TERMV
BKV
A
T
T
T
T
T
T
T
T
T
T
A
A
A
A
A
A
A
A
A
A
= 1V
= +25°C.) (Note 1)
= +25°C
= +85°C
= +25°C
= +85°C
= +25°C
= +85°C
= +25°C
= +85°C
= +25°C
= +85°C
= GND = PGND = 0V, V
4.116
1.746
3.42
1.37
1.17
1.23
2.38
2.40
MIN
2.8
1.8
50
8
A
= +70°C)
0.001
0.001
0.005
TYP
0.01
0.01
0.01
1.25
2.43
2.47
0.05
600
4.2
3.5
1.8
0.1
1.4
1.2
2.5
50
10
3
3
1
STRTV
= V
4.284
1.854
MAX
1800
3.58
1.43
1.23
0.05
0.05
1.27
2.48
2.54
5.5
0.5
0.1
0.4
90
12
10
5
7
TERMV
UNITS
= 1.2V,
mA
mV
mV
mV
kΩ
µA
µA
µA
µA
µA
V
V
V
V
V
V
V
V
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