参数资料
型号: MAX8971EWP+T
厂商: Maxim Integrated Products
文件页数: 10/39页
文件大小: 0K
描述: IC DCDC CHRGR LI+ 1CELL 20WLP
标准包装: 2,500
功能: 充电管理,过压/欠压保护
电池化学: 锂离子(Li-Ion)、锂聚合物(Li-Pol)
电源电压: 4 V ~ 7.5 V
工作温度: -40°C ~ 85°C
安装类型: *
封装/外壳: *
供应商设备封装: *
包装: *
MAX8971
Industry's Smallest 1.55A
1-Cell Li+ DC-DC Charger
Typical Operating Characteristics (continued)
(V DC = 5V, C BYP = 1 F F, C AVL = 4.7 F F, V THM = 2.5V, T A = -40 N C to +85 N C, unless otherwise noted. Typical values are at T A = +25 N C.)
CHARGER ENABLE SOFT-START TIME
MAX8971 toc08
500mA/div
5.2
5.1
5.0
AVL/PVL VOLTAGE
vs. DC SUPPLY VOLTAGE
I BAT
I DC
V DC
V BAT
0
500mA/div
0
2V/div
2V/div
4.9
4.8
4.7
4.6
V PVL
V AVL
4.5
0
4.4
4.3
400μs/div
4.0
4.5
5.0
5.5 6.0
DC VOLTAGE (V)
6.5
7.0
7.5
USB INSERTION INTO 500mA
DEFAULT FAST-CHARGE CURRENT
MAX8971 toc10
5V/div
DC PLUG-IN TO 1A
DEFAULT FAST-CHARGE CURRENT
MAX8971 toc10a
500mA/div
V USB
V BAT
V LX
I BAT
WITH AUTOMATIC
USB 100MA MODE
0
2V/div
0
5V/div
0
250mA/div
I BAT
I DC
V BAT
V DC
I FCHG = 1.A
WITH AUTOMATIC
USB 100mA MODE
0
500mA/div
0
2V/div
2V/div
0
0
100ms /div
USB REMOVAL
MAX8971 toc11
40ms/div
BATTERY INSERTION/REMOVAL
(1A INPUT CURRENT LIMIT)
MAX8971 toc12
V USB
V BAT
5V/div
0
2V/div
V DC
V BAT
2V/div
2V/div
V LX
I BAT
0
5V/div
0
500mA/div
V LX
LG LP-AHKM (950mAh)
I LIM = 1A
I FCHG = 500mA
0
5V/div
0
500mA/div
Maxim Integrated
100ms /div
I BAT
10ms/div
0
10
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