MAX8568AETE+ Maxim Integrated Products, MAX8568AETE+ Datasheet - Page 6

• Manufacturer Part Number: MAX8568AETE+
• Description: IC BATT MANAGE LITH 16-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8568AETE+

• Function: Back-Up Management
• Battery Type: Lithium-Ion (Li-Ion); Nickel-Metal Hydride (NiMH)
• Voltage - Supply: 2.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Complete Backup-Management ICs
for Lithium and NiMH Batteries
(Circuit of Figure 7, V
6
11.0
10.8
10.6
10.4
10.2
10.0
100
9.8
9.6
9.4
9.2
9.0
_______________________________________________________________________________________
90
80
70
60
50
40
30
20
10
70
60
50
40
30
20
10
0
0
0.01
-40
1
CHARGE CURRENT vs. TEMPERATURE
V
L1 = MURATA LQH32CN100K
V
BK
BKSU
= 3.6V, V
V
BK
3.3V STEP-UP EFFICIENCY
-15
= 3.3V
= 3.6V, V
0.1
BK SUPPLY CURRENT
2
vs. LOAD CURRENT
vs. INPUT VOLTAGE
LOAD CURRENT (mA)
IN
TEMPERATURE (°C)
V
INPUT VOLTAGE (V)
BK
= 4V, R5 = 127kΩ
V
10
BK
IN
= 1.4V, V
BOOST AND LDO ACTIVE
IN
= 4.2V, R5 = 127kΩ
= 2.9V
1
3
= 3.6V, V
IN
35
V
= 4V, R5 = 169kΩ
BK
= 1.4V
10
4
60
BK
= 1.4V, V
100
85
5
NI/LI
V
BKSU
1.42
1.40
1.38
1.36
1.34
1.32
1.30
V
100
Typical Operating Characteristics (continued)
I
LX
LX
90
80
70
60
50
40
30
20
10
= V
0
0.01
0
LIGHT-LOAD SWITCHING WAVEFORMS
L1 = MURATA LQH32CN100K
BKSU
C3 = 22µF
VARTA V20HR
CHARGE PROFILE FOR NiMH
2.5V STEP-UP EFFICIENCY
2
= 3.3V, T
0.1
CHARGE TIME (HOURS)
vs. LOAD CURRENT
LOAD CURRENT (mA)
4
50µs/div
V
BK
BK VOLTAGE
CHARGE CURRENT
A
1
= 2.9V
= +25°C, unless otherwise noted.)
V
V
V
R5 = 953kΩ
BK(NILO)
BK(NIHI)
BK(NIMAX)
6
LOAD = 1mA
V
BK
= 1.4V
10
= 1.4V
= 1.2V
= 1.8V
8
MAX8568 toc05
MAX8568 toc11
100
10
20mV/div
AC-COUPLED
2V/div
0
200mA/div
0
6
5
4
3
2
1
0
V
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
BKSU
V
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
I
LX
LX
0
0
HEAVY-LOAD SWITCHING WAVEFORMS
PANASONIC VL2330
V
R5 = 432kΩ
BK(LIMAX)
CHARGE PROFILE FOR LiVeO5
C3 = 22µF
10
2
BKSU OUTPUT VOLTAGE
T
vs. LOAD CURRENT
A
CHARGE TIME (HOURS)
= 3.4V
LOAD CURRENT (mA)
= -40°C
CHARGE CURRENT
20
BK VOLTAGE
4
5µs/div
T
30
A
= +25°C
6
40
LOAD = 50mA
T
A
= +85°C
8
MAX8568 toc06
MAX8568 toc12
50
10
60
8
7
6
5
4
3
2
1
0
20mV/div
AC-COUPLED
2V/div
0
200mA/div
0