参数资料
型号: MAX8814ETA+T
厂商: Maxim Integrated Products
文件页数: 4/11页
文件大小: 0K
描述: IC BATT CHARGER LI+ 28V 8TDFN
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)
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: 8-WFDFN 裸露焊盘
供应商设备封装: 8-TDFN-EP(2x2)
包装: 标准包装
其它名称: MAX8814ETA+TDKR
28V Linear Li+ Battery Charger with
Smart Autoboot Assistant
Typical Operating Characteristics (continued)
(V IN = 5V, V BATT = 4V, R POK = 1M Ω to BATT, EN = 0V, R ISET = 2.8k Ω to GND, C BATT = 2.2μF, T A = -40°C to +85°C, unless other-
wise noted. Typical values are at T A = +25°C.)
CHARGE CURRENT
CHARGE CURRENT vs. INPUT
1000
900
800
700
600
vs. INPUT VOLTAGE
1000
900
800
700
600
VOLTAGE HEADROOM
I BATT
V IN
STARTUP INTO PRECHARGE
MAX8814 toc06
V BATT = 2V
100mA/div
0A
5V/div
0V
500
500
400
300
200
100
400
300
200
100
V BATT = 4V
V IN RISING
V EN
5V/div
0V
5V/div
0
0
4
8
12
16
20
24
28
0
0
100
200
300
400
500
V POK
40 μ s/div
0V
INPUT VOLTAGE (V)
SHUTDOWN
V IN - V BATT (mV)
BATTERY REGULATION VOLTAGE
(FAST-CHARGE TO SHUTDOWN)
MAX8814 toc07
1.0
ACCURACY vs. AMBIENT TEMPERATURE
1000
CHARGE CURRENT vs. R ISET
I BATT
500mA/div
0.8
I BATT = 0A
0.6
V IN
V EN
0A
5V/div
0V
5V/div
0V
0.4
0.2
0
-0.2
-0.4
100
10
-0.6
5V/div
-0.8
V POK
100 μ s/div
0V
-1.0
-40
-15
10
35
60
85
1
1
10
100
1000
10,000
TEMPERATURE ( ° C)
R ISET (k Ω )
700
600
CHARGE CURRENT vs. AMBIENT
TEMPERATURE
V BATT = 4V
AUTOBOOT ENABLED
BY ABI SIGNAL
MAX8814 toc11
5V/div
AUTOBOOT ENABLED
BY INPUT SUPPLY
MAX8814 toc12
5V/div
500
400
V BATT = 3.2V
V ABI
V IN
0V
5V/div
0V
V ABI
V IN
0V
5V/div
0V
300
200
V BATT
5V/div
0V
V BATT
5V/div
0V
100
R ISET = 2.8k Ω
5V/div
5V/div
0
-40
-15
10
35
60
85
V ABO
4 μ s/div
0V
V ABO
4 μ s/div
0V
TEMPERATURE ( ° C)
4
_______________________________________________________________________________________
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