MAX17435 查看數據表（PDF） - Maxim Integrated
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MAX17435 Datasheet PDF : 27 Pages
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High-Frequency,
Low-Cost SMBus Chargers
Typical Operating Characteristics (continued)
(Circuit of Figure 1, VIN = 19V, VCC = VDD = 5V, EN = VCC, TA = +25NC, unless otherwise specified.)
IINP ERROR vs. SYSTEM CURRENT
3.5
INPUT CURRENT LIMIT = 3.584A
3.0
2.5
2.0
1.5
1.0
0.5 VBATT = 16.8V
0
-0.5
0
VBATT = 12.6V
VBATT = 8.4V
1
2
3
4
SYSTEM CURRENT (A)
CHARGER-CURRENT ERROR
vs. BATTERY VOLTAGE
3.0
2.5
2.0
ICHARGER = 5A
1.5
ICHARGER = 3A
1.0
ICHARGER = 4A
0.5
0
-0.5
3
8
13
18
BATTERY VOLTAGE (V)
CHARGER-CURRENT ERROR
vs. SMBus SETTING
9
8
7
6
5
4
3
2
1
0
2
4
6
INPUT CURRENT-LIMIT SETTING (A)
0.20
0.15
0.10
0.05
0
-0.05
-0.10
-0.15
0
CHARGE VOLTAGE
ACCURACY AT 3.854A
5
10
15
CHARGE VOLTAGE (V)
CHARGER VOLTAGE ERROR
vs. CHARGER CURRENT
0.3
0.2
0.1
0
VBATT = 8.4V VBATT = 12.6V
-0.1 VBATT = 16.8V
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
20
0
2
4
6
CHARGER CURRENT (A)
BATTERY REMOVAL
(VBATT = 3V)
MAX17435 toc09
VPDSL
5V/div
VBATT
5V/div
VDCIN
5V/div
IL
1A/div
100Fs/div
SYSTEM LOAD TRANSIENT
(0A 3A 0A)
MAX17435 toc10
IL
1A/div
VBATT
200mV/div
VCC
1V/div
ISYSLD
1A/div
1ms/div
CHARGE-OUTPUT SHORT CIRCUIT
MAX17435 toc11
VBATT
5V/div
20Fs/div
IL
2A/div
0A
EFFICIENCY vs. CHARGE CURRENT
(2, 3, AND 4 CELLS)
100
4 CELL
95
3 CELL
90
85
2 CELL
80
75
70
65
60
55
50
0123456
CHARGE CURRENT (A)
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