参数资料
型号: MAX8844ZETD+T
厂商: Maxim Integrated Products
文件页数: 5/17页
文件大小: 0K
描述: IC BATT CHARGER LI+ DUAL 14TDFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
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: 0 V ~ 28 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 14-WFDFN 裸露焊盘
供应商设备封装: 14-TDFN-EP(3x3)
包装: 标准包装
其它名称: MAX8844ZETD+TDKR
28V Dual Input Linear Li+ Battery Chargers with
Battery Detection and Overvoltage-Protected Output
Typical Operating Characteristics (continued)
(V IN = 5V or V USB = 5V, V BATT = 4V, R POK = R CHG = 200k Ω to 5V, EN = unconnected, R SETI = 2.8k Ω to GND, R MIN = 1.74k Ω to
GND, R DETBAT = 4.7k Ω to GND, C BATT = 2.2μF, T A = +25°C, unless otherwise noted.
CHARGE CURRENT
vs. INPUT VOLTAGE
CHARGE CURRENT
vs. SUPPLY VOLTAGE HEADROOM
SAFEOUT OUTPUT VOLTAGE
vs. INPUT VOLTAGE
600
500
400
300
V IN = 5V,
V USB = 0V
V IN = 0V,
V USB = 5V
600
500
400
300
V IN - V BATT
V USB - V BATT
5.0
4.5
4.0
3.5
3.0
2.5
2.0
I SAFEOUT = 1mA
200
200
1.5
100
0
100
0
V BATT = 4V
V SUPPLY RISING
1.0
0.5
0
0
4
8
12
16
20
24
28
0
100
200
300
400
500
600
0
4
8
12
16
20
24
28
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
INPUT VOLTAGE (V)
SAFEOUT OUTPUT VOLTAGE
vs. LOAD CURRENT
6
5
4
3
2
1
0
V SUPPLY - V BATT (mV)
SAFEUSB OUTPUT VOLTAGE
vs. USB VOLTAGE
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
INPUT VOLTAGE (V)
SAFEUSB OUTPUT VOLTAGE
vs. LOAD CURRENT
0
20
40
60
80
100
0
4
8
12
16
20
24
28
0
20
40
60
80
100
LOAD CURRENT (mA)
STARTUP INTO PRECHARGE
MAX8844 toc10
100mA/div
USB VOLTAGE (V)
I BATT
LOAD CURRENT (mA)
SHUTDOWN
(FAST-CHARGE TO SHUTDOWN)
MAX8844 toc11
500mA/div
I BATT
0
0
V IN
V EN
5V/div
0
5V/div
0
V IN
V EN
5V/div
0
5V/div
0
5V/div
5V/div
V POK
0
V POK
40 μ s/div
0
100 μ s/div
_______________________________________________________________________________________
5
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