参数资料
型号: MAX1925ETC+T
厂商: Maxim Integrated Products
文件页数: 3/16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
ELECTRICAL CHARACTERISTICS (continued)
(V PGND = V GND = 0, V INP = V IN = V CHG = 5V, V BATT = V CS = V EN = 4V, THRM = 10k ? to GND, C CT = 100nF, T A = 0 ° C to +85 ° C ,
unless otherwise noted. Typical values are at T A = +25 ° C.)
PARAMETER
Restart Threshold
BATT Voltage Fault Threshold
CONDITIONS
Charging restarts when BATT falls to this point
If BATT exceeds this threshold, EXT is high
(external MOSFET is off) and CHG blinks
MIN
3.92
4.275
TYP
4.00
4.350
MAX
4.08
4.425
UNITS
V
V
CURRENT LOOP
CS - BATT Sense Threshold
Prequal1 Charge Current
Prequal2 CS - BATT Sense
Threshold
Current Threshold for
Full-Battery Indication
V CS - V BATT , average value
Rise/fall hysteresis
V BATT < 2V
Average value, 2V < V BATT < 3V (charge current is C/10)
Rise/fall hysteresis, 2V < V BATT < 3V
I LOAD falling, as percentage of fast charge current
132
3
6
142
30
4
14
12
12
152
6
20
mV
mA
mV
%
DRIVER FUNCTIONS
EXT Sink/Source Current
1
A
EXT On-Resistance
Nominal Switching Frequency
EXT high or low
V BATT = 3.6V, L =10μH
5
235
12
?
kHz
TIMER FUNCTIONS
Full-Time Timeout - t FULL
Prequal1 Timeout
Prequal2 Timeout
C CT = 100nF
C CT = 100nF
C CT = 100nF
3.02
t FULL/1088
(10s)
t FULL/17
(10.67 min)
hours
s
min
Timer Accuracy
C CT = 100nF for 3 hours
-15
+15
%
CHG Output Low Current
V CHG = 1V
7
10
14
mA
CHG Output High Leakage
Current
CHG Blink Rate - Fault
V CHG = 12V
Fault state (50% duty cycle), C CT = 100nF
0.5
1
μA
Hz
ACON High Leakage
ACON Sink Current
V ACON = 12V
V ACON = 0.4V
2
0.01
1.00
μA
mA
THERMISTOR MONITOR (Note 2)
THRM Sense Current for Hot
Qualification
THRM Sense Current for Cold
Qualification
344.1
47.58
352.9
48.80
361.7
50.02
μA
μA
THRM Sense-Voltage Trip Point
(Note 3)
1.386
1.400
1.414
V
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3
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