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LTC4009CUF-1#TRPBF PDF预览

LTC4009CUF-1#TRPBF

更新时间： 2024-02-05 07:10:31
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凌特 - Linear 电池
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28页 299K
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LTC4009CUF-1#TRPBF 数据手册

 浏览型号LTC4009CUF-1#TRPBF的Datasheet PDF文件第2页浏览型号LTC4009CUF-1#TRPBF的Datasheet PDF文件第3页浏览型号LTC4009CUF-1#TRPBF的Datasheet PDF文件第4页浏览型号LTC4009CUF-1#TRPBF的Datasheet PDF文件第5页浏览型号LTC4009CUF-1#TRPBF的Datasheet PDF文件第6页浏览型号LTC4009CUF-1#TRPBF的Datasheet PDF文件第7页 
LTC4009  
LTC4009-1/LTC4009-2  
High Efficiency,  
Multi-Chemistry  
Battery Charger  
FEATURES  
DESCRIPTION  
n
General Purpose Battery Charger Controller  
TheLTC4009isaconstant-current/constant-voltagebattery  
charger controller. It uses a synchronous quasi-constant  
frequency PWM control architecture that will not generate  
audible noise with ceramic bulk capacitors. Charge cur-  
rent 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
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  
n
The CHRG status pin is active during all charging modes,  
including special indication for low charge current.  
Battery Backup Systems  
L, LT, LTC and LTM are registered 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  
= 33mΩ  
FLOAT  
3.01k  
3.01k  
R
R
R
D
SENSE  
CSP  
= 3.01k  
IN  
PROG  
= 26.7k  
6.04k  
0.1μF  
= SSB44  
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  
4009fb  
1
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LTC4009CUF-1#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC4009CUF-1#PBF Linear

完全替代

 LTC4009 - High Efficiency, Multi-Chemistry Battery Charger; Package: QFN; Pins: 20; Temper

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