MAX8730 Просмотр технического описания (PDF) - Maxim Integrated
Номер в каталоге
Компоненты Описание
производитель
MAX8730 Datasheet PDF : 29 Pages
| |||
Low-Cost Battery Charger
Typical Operating Characteristics (continued)
(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.)
PEAK-TO-PEAK INDUCTOR CURRENT
vs. BATTERY VOLTAGE
2.5
2.3
EFFICIENCY vs. CHARGE CURRENT
100
2.1
1.9
90
3 CELLS 4 CELLS
1.7
1.5
80
1.3
1.1
0.9
70
0.7
0.5
0
3 6 9 12 15 18
BATTERY VOLTAGE (V)
60
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
CHARGE CURRENT (A)
ADAPTER QUIESCENT CURRENT
vs. ADAPTER VOLTAGE
3.0
BATTERY ABSENT
2.5
2.0
REFON = 1
INPON = 1
1.5
1.0
0.5
0
0
REFON = 0
INPON = 0
5
10
15
20
25
ADAPTER VOLTAGE (V)
BATTERY LEAKAGE CURRENT
vs. BATTERY VOLTAGE
500
REFON = INPON = 1
400
REFON = 0
INPON = 1
300
200
100
0
0
REFON = 1
INPON = 0
REFON = INPON = 0
3 6 9 12 15 18
BATTERY VOLTAGE (V)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
CHARGE CURRENT vs. TIME
INITIAL CONDITION: 4 CELLS
10V BATTERY
FULL CHARGE = 16.8V
0.5 1.0 1.5 2.0 2.5 3.0
TIME (h)
LDO LOAD REGULATION
0
-0.1 CHARGER DISABLED
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
0
10
20
30
40
50
ILDO (mA)
12 ______________________________________________________________________________________
Share Link: 