MAX8730 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX8730 Datasheet PDF : 29 Pages
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Low-Cost Battery Charger
Typical Operating Characteristics
(Circuit of Figure 1, adapter = 19.5V, VBATT = 12V, VICTL = 2.4V, MODE > 1.8V, REFON = INPON = LDO, VRELTH = VREF/2, TA =
+25°C, unless otherwise noted.)
INPUT CURRENT-LIMIT ERROR vs. CLS
15
MAXIMUM
10
5
0
TYPICAL UNIT
-5
-10
MINIMUM
-15
1.1 1.6 2.1 2.6 3.1 3.6 4.1
VCLS (V)
INPUT CURRENT-LIMIT ERROR
vs. SYSTEM CURRENT
5.0
4.5
VIN = 24V
4.0
3.5
3.0
VIN = 19V
2.5 VIN = 17V
2.0
1.5
1.0
0.5
0
0
VCLS = VREF x 0.7
0.5 1.0 1.5 2.0 2.5 3.0 3.5
SYSTEM CURRENT (A)
INPUT CURRENT-LIMIT ERROR
vs. SYSTEM CURRENT
7
6
VCLS = VREF / 2
5
4
VCLS = VREF
3
2 VCLS = VREF x 0.7
1
0
0
1
2
3
4
5
SYSTEM CURRENT (A)
IINP ERROR vs. VCSSP - VCSSN
15
MAXIMUM
10
5
0
-5
-10
MINIMUM
-15
0
10 20 30 40 50 60 70 80 90 100
VCSSP - VCSSN
25
20
15
10
5
0
-5
-10
-15
-20
-25
0
TRICKLE-CHARGE CURRENT
vs. BATTERY VOLTAGE
CHARGE CURRENT = 150mA
3 6 9 12 15 18
BATTERY VOLTAGE (V)
CHARGE-CURRENT ERROR
vs. CHARGE-CURRENT SETTING
20
15
MAXIMUM ERROR
10
5
0
TYPICAL UNIT
-5
-10
MINIMUM ERROR
-15
-20
0
0.6 1.2 1.8 2.4 3.0 3.6
VICTL (V)
BATTERY-VOLTAGE ERROR
vs. CHARGE CURRENT
0
-0.05
-0.10
4 CELLS
-0.15
3 CELLS
-0.20
-0.25
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
CHARGE CURRENT (A)
CHARGE-CURRENT ERROR
vs. BATTERY VOLTAGE
1.6
VICTL = 2V
1.3
1.0
0.7
0.4
0.1
VICTL = 3.6V
-0.2
-0.5
0
5
10
15
20
BATTERY VOLTAGE (V)
BATTERY-VOLTAGE ERROR vs. VCTL
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
VCTL (V)
10 ______________________________________________________________________________________
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