参数资料
型号: MAX8971EWP+T
厂商: Maxim Integrated Products
文件页数: 9/39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
(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.)
3.0
2.5
DC QUIESCENT CURRENT
vs. DC SUPPLY VOLTAGE
2.5
2.0
DC SUPPLY CURRENT
vs. TEMPERATURE
2.0
1.5
1.5
1.0
1.0
0.5
0.5
0
4
6
8
10
12
14
0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
1.8
1.6
1.4
1.2
1.0
0.8
0.6
DC VOLTAGE (V)
BATTERY LEAKAGE CURRENT
vs. TEMPERATURE
600
500
400
300
200
TEMPERATURE (°C)
FAST-CHARGE CURRENT
vs. DC SUPPLY VOLTAGE
0.4
0.2
0
100
0
V DC , FALLING
V DC , RISING
I FCHG = 500mA
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
MEDIUM LOAD SWITCHING WAVEFROMS
MAX8971 toc06
3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5
DC VOLTAGE (V)
HEAVY LOAD SWITCHING WAVEFROMS
MAX8971 toc07
V BAT
V LX
I LX
20mV/div
AC-COUPLED
2V/div
0
200mA/div
V BAT
V LX
20mV/div
AC-COUPLED
2V/div
0
Maxim Integrated
I FCHG = 500mA
200ns/div
I LX
I FCHG = 1.55A
400ns/div
1A/div
9
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