参数资料
型号: MAX1925ETC+T
厂商: Maxim Integrated Products
文件页数: 6/16页
文件大小: 0K
描述: IC CHARGER LI+ 12-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
功能: 充电管理
电池化学: 锂离子(Li-Ion)、锂聚合物(Li-Pol)
电源电压: 4.5 V ~ 12 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 12-WQFN 裸露焊盘
供应商设备封装: 12-TQFN-EP(4x4)
包装: 带卷 (TR)
Switch-Mode 1-Cell Li+ Chargers
Typical Operating Characteristics
(Circuit of Figure 1, V SUPPLY = 5V, V BATT = 4V, T A = +25 ° C, unless otherwise noted.)
20
CHARGE-CURRENT ACCURACY
vs. SUPPLY VOLTAGE
1.2
CHARGE CURRENT
vs. BATTERY VOLTAGE
4.210
FULL-BATTERY VOLTAGE
vs. SUPPLY VOLTAGE
15
V BATT = 4V
1.0
V IN = 12V
4.208
10
4.206
5
0.8
V IN = 10V
V IN = 8V
V IN = 5V
4.204
0
0.6
4.202
-5
0.4
SEE THE DROPOUT
4.200
-10
-15
-20
0.2
0
BEHAVIOR SECTION
4.198
4.196
4.194
5
6
7
8
9
10
11
12
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
4
5
6
7
8
9
10
11
12
4.0
3.5
V SUPPLY (V)
SHUTDOWN BATTERY CURRENT
vs. BATTERY VOLTAGE
100
95
BATTERY VOLTAGE (V)
EFFICIENCY vs. SUPPLY VOLTAGE
100
95
V SUPPLY (V)
EFFICIENCY vs. BATTERY VOLTAGE
3.0
2.5
2.0
1.5
1.0
0.5
0
90
85
80
75
70
V BATT = 4V
90
85
80
75
70
65
60
V IN = 5V
V IN = 8V
V IN = 12V
3.0
3.2
3.4
3.6
3.8
4.0
4.2
5
6
7
8
9
10
11
12
3.0
3.2
3.4
3.6
3.8
4.0
4.2
1000
V BATT (V)
SWITCHING FREQUENCY vs. INDUCTANCE
1000
V SUPPLY (V)
SWITCHING FREQUENCY vs. R SENSE
500
BATTERY VOLTAGE (V)
SWITCHING FREQUENCY
vs. SUPPLY VOLTAGE
V IN = 12V
V IN = 12V
450
400
V IN = 8V
350
300
V BATT = 4V
100
V IN = 5V
100
V IN = 8V
250
V IN = 5V
200
150
100
10
V BATT = 4V
10
V BATT = 4V
50
0
1
10
100
0.01
0.10
1.00
5
6
7
8
9
10
11
12
INDUCTANCE ( μ H)
R SENSE ( ? )
V SUPPLY (V)
6
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