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MAX8900A

更新时间： 2024-11-06 14:57:27
品牌 Logo 应用领域
亚德诺 - ADI 电池开关
页数 文件大小 规格书
35页 3532K
描述
1.2A开关模式Li+充电器，具有±22V输入额定电压和JEITA电池温度监测

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MAX8900A 数据手册

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EVALUATION KIT AVAILABLE  
MAX8900A/MAX8900B/MAX8900C  
1.2A Switch-Mode Li+ Chargers with 22ꢀ ꢁInpt  
RatiIg aId JEꢁTA Battery Temneratpre MoIitoriIg  
GeIeral DescrintioI  
Featpres  
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/MAX8900C) or  
3.4V to 8.7V (MAX8900B). The 3.25MHz switch-mode  
charger is ideally 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 ꢁegulation Voltage ꢂAlternate  
4.1V Target Available on ꢁequest)  
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  
ꢂ±22V)  
S Up to +2±V Operating ꢁange ꢂAlternate OVLO  
ꢁanges Available on ꢁequest)  
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  
Simnlified AnnlicatioIs Circpit  
1FH  
The MAX8900_ is available in a 0.4mm pitch, 2.44mm x  
2.67mm x 0.64mm WLP package.  
BST  
CS  
AnnlicatioIs  
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  
OrderiIg ꢁIformatioI (coItiIped)  
OFF  
TEMP PIN-  
ꢁANGE PACKAGE  
ON  
PAꢁT  
OPTIONS  
T
PVL  
V
= 6.5V  
INBP  
OVLO  
1.0FF  
6.3V  
0.47FF  
25V  
CT  
SETI DNI  
-40NC to  
30 WLP  
+85NC  
T1 = 0NC  
MAX89±±AEWV+T  
2-pin status indicators  
0402  
0603  
V
= 2.8V  
PQUTH  
V
= 9.0V  
OVLO  
-40NC to  
30 WLP  
+85NC  
T1 = -15NC  
3-pin status indicators  
MAX89±±BEWV+T  
*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.  
V
= 2.8V  
PQUTH  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
T = Tape and reel.  
Ordering Information continued at end of data sheet.  
For pricing, delivery, and ordering information, please contact Maxim Direct  
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.  
19-5063; Rev 4; 11/14  
1234567...35

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