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LTC4009 PDF预览

LTC4009

更新时间： 2023-12-20 18:44:17
品牌 Logo 应用领域
亚德诺 - ADI 电池
页数 文件大小 规格书
28页 356K
描述
高效率的多化学组成电池充电器

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中文翻译

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LTC4009 数据手册

 浏览型号LTC4009的Datasheet PDF文件第2页浏览型号LTC4009的Datasheet PDF文件第3页浏览型号LTC4009的Datasheet PDF文件第4页浏览型号LTC4009的Datasheet PDF文件第5页浏览型号LTC4009的Datasheet PDF文件第6页浏览型号LTC4009的Datasheet PDF文件第7页 
LTC4009  
LTC4009-1/LTC4009-2  
High Efficiency,  
Multi-Chemistry  
Battery Charger  
FeaTures  
DescripTion  
The LTC®4009 is a constant-current/constant-voltage  
battery charger controller. It uses a synchronous quasi-  
constant frequency PWM control architecture that will  
not generate audible noise with ceramic bulk capacitors.  
Charge current is set by the combination of external  
sense, input and programming resistors. With no built-in  
termination, the LTC4009 family charges a wide range of  
batteries under external control.  
n
General Purpose Battery Charger Controller  
n
Efficient 550kHz Synchronous Buck PWM Topology  
n
0ꢀ5ꢁ ꢂutput ꢃloat ꢄoltage Accuracy  
n
Programmable Charge Current: 4ꢁ Accuracy  
n
Programmable AC Adapter Current Limit:  
3ꢁ Accuracy  
n
No Audible Noise with Ceramic Capacitors  
n
Wide Input Voltage Range: 6V to 28V  
n
Wide Output Voltage Range: 2V to 28V  
TheLTC4009featuresafullyadjustableoutputvoltage,while  
theLTC4009-1andLTC4009-2canbepin-programmedfor  
lithium-ion/polymer battery packs of 1-, 2-, 3- or 4-series  
cells. The LTC4009-1 provides output voltage of 4.1V/cell,  
and the LTC4009-2 is a 4.2V/cell version.  
n
Indicator Outputs for AC Adapter Present, Charging,  
C/10 Current Detection and Input Current Limiting  
n
Analog Charge Current Monitor  
Micropower Shutdown  
n
n
Thermally Enhanced 20-Pin 4mm × 4mm × 0.75mm  
QFN Package  
ThedeviceincludesACadapterinputcurrentlimitingwhich  
maximizes the charge rate for a fixed input power level. An  
externalsenseresistorprogramstheinputcurrentlimit,and  
theICLstatuspinindicateswhenthebatterychargecurrent  
is being reduced as a result of AC adapter current limiting.  
applicaTions  
n
Notebook Computers  
n
Portable Instruments  
The CHRG status pin is active during all charging modes,  
including special indication for low charge current.  
n
Battery Backup Systems  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks  
are the property of their respective owners. Protected by U.S. Patents including 5723970.  
Typical applicaTion  
FROM  
ADAPTER  
33mΩ  
POWER TO  
SYSTEM  
13V TO 20V  
0.1µF  
DCIN  
20µF  
0.1µF  
Efficiency at DCIN = 20ꢄ  
CLP  
5.1k  
14.3k  
1.5k  
CLN  
BOOST  
100  
95  
90  
85  
80  
75  
70  
10000  
1000  
100  
DCDIV  
LTC4009  
0.1µF  
TGATE  
EFFICIENCY  
CHRG  
ACP  
ICL  
SW  
INTV  
DD  
TO/FROM  
MCU  
POWER LOSS  
2µF  
6.8µH  
33mΩ  
BGATE  
GND  
SHDN  
ITH  
V
= 12.3V  
OUT  
3.01k  
3.01k  
R
R
R
D
= 33mΩ  
SENSE  
= 3.01k  
CSP  
IN  
PROG  
= SSB44  
= 26.7k  
6.04k  
0.1µF  
IN  
L = IHLP-2525CZ 6.8µH  
1.5 2.0 2.5 3.0  
CHARGE CURRENT (A)  
CSN  
BAT  
0
1.0  
0.5  
CHARGE  
CURRENT  
MONITOR  
+
20µF  
PROG  
FBDIV  
12.3V  
Li-Ion  
301k  
4009 TA01b  
26.7k  
4.7nF  
BATTERY  
V
FB  
4009 TA01a  
32.8k  
4009fd  
ꢀ
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