MAX1870AETJ+ Maxim Integrated Products, MAX1870AETJ+ Datasheet - Page 10

• Manufacturer Part Number: MAX1870AETJ+
• Description: Battery Management Li+ Step Up/Step Down Battery Charger
• Manufacturer: Maxim Integrated Products

Specifications of MAX1870AETJ+

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Step-Up/Step-Down
Li+ Battery Charger
(Circuit of Figure 1, V
10
0.25
0.20
0.15
0.10
0.05
95
90
85
80
75
70
65
60
-1
-2
-3
-4
-5
0
5
4
3
2
1
0
______________________________________________________________________________________
0
0
2
BATTERY VOLTAGE ERROR vs. VCTL
EFFICIENCY vs. BATTERY VOLTAGE
0.5
IINP ERROR vs. SYSTEM LOAD
V
4
IN
= 12V
1.00
1.0
6
BATTERY VOLTAGE (V)
V
SYSTEM LOAD (A)
IN
1.5
8
= 16V
DCIN
VCTL (V)
2.00
2.0
10
= 16V, CELLS = REFIN, V
2.5
12
3.00
3.0
14
3.5
16
4.00
4.0
18
100
-10
-20
-30
-40
-50
-60
-70
-80
-10
95
90
85
80
75
70
65
60
20
10
10
-2
-4
-6
-8
Typical Operating Characteristics (continued)
0
8
6
4
2
0
0
0
0
CLS =
EFFICIENCY vs. CHARGE CURRENT
CHARGE-CURRENT ERROR vs. ICTL
V
INPUT CURRENT-LIMIT ERROR
BATT
0.5
V
0.50
BATT
0.5
V
V
V
= 16.8V
vs. SYSTEM CURRENT
REF
BATT
BATT
= 14V
1.0
CHARGE CURRENT (A)
SYSTEM CURRENT (A)
1.00
, V
V
= 8.4V
= 16V
BATT
1.0
1.5
ICTL
V
ICTL
= 10V
1.50
V
(V)
BATT
= V
2.0
V
1.5
BATT
V
2.00
= 12V
BATT
REFIN
= 12.6V
2.5
V
BATT
= 8V
2.0
2.50
= 3.3V, T
3.0
= 6V
3.00
2.5
3.5
A
= +25°C, unless otherwise noted.)
-100
-150
-200
-250
-300
-0.1
-0.2
-0.3
-0.4
-0.5
-10
-15
200
150
100
-50
0.5
0.4
0.3
0.2
0.1
15
10
-5
50
5
0
0
0
0
BATTERY VOLTAGE ERROR IN CV MODE
0
0
I
CHG
INPUT CURRENT-LIMIT ERROR
= 0.15A
CHARGE-CURRENT ERROR
1.00
0.5
vs. BATTERY VOLTAGE
5
CHARGE CURRENT (A)
I
2.00
1.0
CHG
V
V
vs. CLS
BATT
V
I
CHG
BATT
V
CLS
BATT
= 2.4A
10
= 12.6V
= 1.9A
(V)
(V)
= 8.4V
3.00
1.5
I
CHG
V
15
BATT
4.00
2.0
= 1.4A
= 16.8V
5.00
2.5
20