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LTC4000-1 PDF预览

LTC4000-1

更新时间： 2024-11-09 12:25:47
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 477K
描述
High Voltage High Current Controller for Battery Charging with Maximum Power Point Control

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LTC4000-1 数据手册

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LTC4000-1  
High Voltage High Current  
Controller for Battery Charging with  
Maximum Power Point Control  
DescripTion  
FeaTures  
Maximum Power Control: Solar Panel Input  
Compatible  
The LTC®4000-1 is a high voltage, high performance  
controller that converts many externally compensated  
DC/DC power supplies into full-featured battery chargers  
with maximum power point control. In contrast to the  
LTC4000, the LTC4000-1 has an input voltage regulation  
loop instead of the input current regulation loop.  
n
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  
Programmable Charge Current: 1% Accuracy  
0.ꢀ2% 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  
Features of the LTC4000-1’s battery charger include:  
accurate ( 0.ꢀ25% programmable float voltage, select-  
able timer or current termination, temperature qualified  
charging using an NTC thermistor, automatic recharge,  
C/10tricklechargefordeeplydischargedcells,badbattery  
detectionandstatusindicatoroutputs.Thebatterycharger  
also includes precision current sensing that allows lower  
sense voltages for high current applications.  
n
n
n
n
n
n
TheLTC4000-1supportsintelligentPowerPathcontrol.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 shorted battery.  
applicaTions  
n
Solar Powered Battery Charger Systems  
n
Battery Charger with High Impedance Input Source,  
e.g., Fuel Cell or Wind Turbine  
n
Battery Equipped Industrial or Portable Military  
Equipments  
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.  
The LTC4000-1 is available in a low profile ꢀ8-lead  
4mm × 2mm QFN and SSOP packages.  
Typical applicaTion  
10.8V at 10A Charger for Three LiFePO4 Cells with a Solar Panel Input  
Solar Panel Input Regulation,  
Achieves Max Power Point  
to Greater than 98%  
20  
Si7135DP  
LT3845A  
V
OUT  
12V, 15A  
IN  
OUT  
SOLAR PANEL INPUT  
<60V OPEN  
CIRCUIT VOLTAGE  
17.6V PEAK  
V
C
5mΩ  
100µF  
47nF  
1.15M  
5mΩ  
14.7k  
POWER VOLTAGE  
T = 25°C  
A
ITH  
CC  
IID IGATE CSP  
CSN  
18  
16  
14  
12  
10  
BGATE  
Si7135DP  
BAT  
OFB  
CLN  
IN  
127k  
LTC4000-1  
1µF  
332k  
20k  
FBG  
V
BAT  
133k  
IFB  
98% TO 95% PEAK POWER  
100% TO 98% PEAK POWER  
10.8V FLOAT  
10A MAX CHARGE  
CURRENT  
BFB  
NTC  
3V  
1.13M  
10k  
IIMON  
TMR  
10nF  
CL  
CX  
GND BIAS  
3-CELL LiFePO  
BATTERY PACK  
4
1
2
3
4
5
6
7
8
9
10  
10k  
CHARGER OUTPUT CURRENT: I  
(A)  
40001 TA01b  
RCS  
24.9k  
22.1k  
0.1µF  
1µF  
40001 TA01a  
40001f  
1
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