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MAX8900B

更新时间： 2024-11-23 11:14:27
品牌 Logo 应用领域
美信 - MAXIM 电池开关监控
页数 文件大小 规格书
35页 4773K
描述
1.2A Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring

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MAX8900B 数据手册

 浏览型号MAX8900B的Datasheet PDF文件第2页浏览型号MAX8900B的Datasheet PDF文件第3页浏览型号MAX8900B的Datasheet PDF文件第4页浏览型号MAX8900B的Datasheet PDF文件第5页浏览型号MAX8900B的Datasheet PDF文件第6页浏览型号MAX8900B的Datasheet PDF文件第7页 
19-5063; Rev 1; 3/10  
1.2A Switch-Mode Li+ Chargers with 22V Input  
Rating and JEITA Battery Temperature Monitoring  
General Description  
Features  
S 3.25MHz Switching Li+/Li-Poly Battery Charger  
The MAX8900_ is a high-frequency, switch-mode char-  
ger for a 1-cell lithium ion (Li+) or lithium polymer  
(Li-Poly) battery. It delivers up to 1.2A of current to the  
battery from 3.4V to 6.3V (MAX8900A) or 3.4V to 8.7V  
(MAX8900B). The 3.25MHz switch-mode charger is ide-  
ally suited to small portable devices such as headsets  
and ultra-portable media players because it minimizes  
component size and heat.  
S JEITA Battery Temperature Monitor Adjusts  
Charge Current and Termination Voltage  
S 4.2V ±±.5ꢀ Battery Regulation Voltage (Alternate  
4.1V Target Available on Request)  
S Adjustable Done Current Threshold  
Adjustable from 1±mA to 2±±mA  
±1mA Accuracy at 1±mA  
Several features make the MAX8900_ perfect for high-  
reliability systems. The MAX8900_ is protected against  
input voltages as high as +22V and as low as -22V.  
Battery protection features include low voltage prequali-  
fication, charge fault timer, die temperature monitoring,  
and battery temperature monitoring. The battery temper-  
ature monitoring adjusts the charge current and termina-  
tion voltage as described in the JEITA* specification for  
safe use of secondary lithium-ion batteries.  
S High-Efficiency and Low Heat  
S Uses a 2.±mm x 1.6mm Inductor  
S Positive and Negative Input Voltage Protection  
(±22V)  
S Up to +2±V Operating Range (Alternate OVLO  
Ranges Available on Request)  
S Supports No-Battery Operation  
S Fault Timer  
Charge parameters are easily adjustable with external  
components. An external resistance adjusts the charge  
current from 50mA to 1200mA. Another external resis-  
tance adjusts the prequalification and done current  
thresholds from 10mA to 200mA. The done current thresh-  
old is very accurate achieving Q1mA at the 10mA level.  
The charge timer is adjustable with an external capacitor.  
S Charge Status Outputs  
S 2.44mm x 2.67mm x ±.64mm Package  
Simplified Applications Circuit  
1FH  
The MAX8900_ is available in a 0.4mm pitch, 2.44mm x  
2.67mm x 0.64mm WLP package.  
BST  
CS  
Applications  
Digital Cameras  
GPS, PND  
eBook  
LX  
IN  
BAT  
USB Charging  
Headsets and Media  
Players  
2.2FF  
6.3V  
0603  
V
IN  
(-22V TO +22V)  
0.47FF  
25V  
0603  
PGND  
AVL  
SYSTEM  
LOAD  
MAX8900_  
Smartphones  
STAT1  
STAT2  
STAT3  
CEN  
GND  
THM  
Li+/  
Li-POLY  
Ordering Information  
OFF  
TEMP PIN-  
OPTIONS  
ON  
PART  
RANGE PACKAGE  
T
PVL  
INBP  
V
= 6.5V  
OVLO  
1.0FF  
6.3V  
0.47FF  
25V  
CT  
SETI DNI  
-40NC to  
30 WLP  
+85NC  
T1 = 0NC  
MAX89±±AEWV+T  
MAX89±±BEWV+T  
2-pin status  
indicators  
0402  
0603  
V
OVLO  
= 9.0V  
-40NC to  
30 WLP  
+85NC  
T1 = -15NC  
3-pin status  
indicators  
*JEITA (Japan Electronics and Information Technology  
Industries Association) standard, “A Guide to the Safe Use  
of Secondary Lithium Ion Batteries in Notebook-type Personal  
Computers” April 20, 2007.  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
T = Tape and reel.  
Ordering Information continued at end of data sheet.  
_______________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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