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MAX17050 参数 Datasheet PDF下载

MAX17050图片预览
型号: MAX17050
PDF下载: 下载PDF文件 查看货源
内容描述: ModelGauge立方米电量计 [ModelGauge m3 Fuel Gauge]
分类和应用: 仪表
文件页数/大小: 47 页 / 2597 K
品牌: MAXIM [ MAXIM INTEGRATED PRODUCTS ]
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MAX17047/MAX17050  
ModelGauge m3 Fuel Gauge  
Detection occurs by monitoring the AIN pin voltage com-  
newly inserted cell. This process can take up to 1.845s  
(FTHRM = 0) or 620ms (FTHRM = 1) from time of inser-  
tion. Note that the device uses the cell voltage as a start-  
ing point for the fuel gauge. If the cell voltage is not fully  
relaxed at time of insertion, the fuel gauge begins with  
some initial error. See the Fuel-Gauge Learning section  
for details. The host can disable this feature by clearing  
the enBi1 bit in the MiscCFG register.  
pared to the THRM pin. Whenever a cell is present, the  
external resistor-divider network sets the voltage of AIN.  
When the cell is removed, the remaining external resistor  
pulls AIN to the THRM pin voltage level. Whenever V  
AIN  
<ꢀ V  
- V  
, the device determines that a cell is  
THRM  
DETF  
present in the application. If V  
> V  
- V  
, the  
DETR  
AIN  
THRM  
device determines that no cell is present at that time.  
The device can also be configured to alert the host when  
cell insertion occurs. When Bei = 1 in the CONFIG reg-  
ister, the device generates an interrupt on the ALRT pin  
at the start of the first temperature conversion after inser-  
tion. This could take up to 1.4s to occur. This feature is  
useful if the application uses more than one cell type and  
the IC must be reconfigured at each insertion.  
Cell Insertion (IC Already Powered)  
The device is ready to detect a cell insertion if either the  
ETHRM or FTHRM bits of the CONFIG register are set  
to enable the THRM pin output. See Figure 38. When a  
cell insertion is detected, the fuel gauge is reset and all  
fuel-gauge outputs are updated to reflect the SOC of the  
CELL INSERTION FROM POWERED STATE (FTHRM = 0)  
V
BATT  
AIN  
UP TO 1.4s  
270ms  
A/D  
READINGS  
175ms  
OUTPUT  
REGISTERS  
CELL  
INSERTION  
CELL  
INSERTION MEASUREMENTS  
DETECTED COMPLETE  
A/D  
SOC VALUES  
UPDATED  
CELL INSERTION FROM POWERED STATE (FTHRM = 1)  
V
BATT  
AIN  
UP TO  
175ms  
270ms  
A/D  
READINGS  
175ms  
OUTPUT  
REGISTERS  
CELL  
INSERTION  
CELL  
INSERTION MEASUREMENTS  
DETECTED COMPLETE  
A/D  
SOC VALUES  
UPDATED  
Figure 38. Operation After Cell Insertion  
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