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LTC3789 PDF预览

LTC3789

更新时间： 2024-11-06 11:41:43
品牌 Logo 应用领域
凌特 - Linear 电池控制器
页数 文件大小 规格书
40页 427K
描述
High Voltage High Current Controller for Battery Charging and Power Management

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中文翻译

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LTC3789 数据手册

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LTC4000  
High Voltage High Current  
Controller for Battery Charging  
and Power Management  
DescripTion  
FeaTures  
TheLTC®4000isahighvoltage,highperformancecontroller  
that converts many externally compensated DC/DC power  
supplies into full-featured battery chargers.  
n
Complete High Performance Battery Charger When  
Paired with a DC/DC Converter  
n
n
Wide Input and Output Voltage Range: 3V to 60V  
Input Ideal Diode for Low Loss Reverse Blocking  
and Load Sharing  
Output Ideal Diode for Low Loss PowerPath™ and  
Load Sharing with the Battery  
FeaturesoftheLTC4000’sbatterychargerinclude:accurate  
( 0.ꢀ25% programmable float voltage, selectable timer or  
current termination, temperature qualified charging using  
anNTCthermistor,automaticrecharge,C/10tricklecharge  
for deeply discharged cells, bad battery detection and  
statusindicatoroutputs.Thebatterychargeralsoincludes  
precisioncurrentsensingthatallowslowersensevoltages  
for high current applications.  
n
n
n
Instant-On Operation with Heavily Discharged  
Battery  
Programmable Input and Charge Current:  
1ꢀ Accuracy  
0.ꢁ2ꢀ Accurate Programmable Float Voltage  
Programmable C/X or Timer Based Charge  
Termination  
NTC Input for Temperature Qualified Charging  
ꢀ8-Lead 4mm × 2mm QFN or SSOP Packages  
n
n
The LTC4000 supports intelligent PowerPath control. An  
external PFET provides low loss reverse current protec-  
tion. Another external PFET provides low loss charging  
or discharging of the battery. This second PFET also  
facilitates an instant-on feature that provides immediate  
downstream system power even when connected to a  
heavily discharged or short faulted battery.  
n
n
applicaTions  
n
High Power Battery Charger Systems  
The LTC4000 is available in a low profile ꢀ8-lead 4mm ×  
2mm QFN and SSOP packages.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
PowerPath is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners.  
n
High Performance Portable Instruments  
n
Industrial Battery Equipped Devices  
Notebook/Subnotebook Computers  
n
Typical applicaTion  
48V to 10.8V at 10A Buck Converter Charger for Three LiFePO4 Cells  
Charge Current and VOUT Profile  
vs VBAT During a Charge Cycle  
Si7135DP  
LT3845  
IN  
OUT  
15V TO 60V  
12V, 15A  
V
SHDN  
12  
10  
8
11  
10.5  
10  
9.5  
9
C
5mΩ  
100µF  
47nF  
1.15M  
5mΩ  
I
CHARGE  
V
OUT  
14.7k  
ITH  
CC  
IID IGATE CSP  
RST  
CLN  
IN  
CSN  
V
OUT  
BGATE  
Si7135DP  
6
BAT  
OFB  
1µF  
1.10M  
4
127k  
VM  
LTC4000  
FBG  
100k  
3.0V  
ENC  
CHRG  
FLT  
2
8.5  
8
I
CHARGE  
7
133k  
10.8V FLOAT  
10A MAX CHARGE  
CURRENT  
BFB  
NTC  
0
1.13M  
IIMON  
6
8
9
(V)  
10  
11  
12  
10nF  
IBMON  
V
BAT  
4000 TA01b  
10k  
10nF  
TMR  
CL  
CX  
GND BIAS  
3-CELL LiFePO  
BATTERY PACK  
4
10k  
24.9k  
22.1k  
0.1µF  
1µF  
4000 TA01a  
NTHS0603  
N02N1002J  
4000f  
1
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中文翻译

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