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LTC1733

更新时间： 2023-12-20 18:44:36
品牌 Logo 应用领域
亚德诺 - ADI 电池
页数 文件大小 规格书
16页 175K
描述
具有热调整功能的单片线性锂离子电池充电器

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中文翻译

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LTC1733 数据手册

 浏览型号LTC1733的Datasheet PDF文件第2页浏览型号LTC1733的Datasheet PDF文件第3页浏览型号LTC1733的Datasheet PDF文件第4页浏览型号LTC1733的Datasheet PDF文件第5页浏览型号LTC1733的Datasheet PDF文件第6页浏览型号LTC1733的Datasheet PDF文件第7页 
LTC1733  
Monolithic Linear  
Lithium-Ion Battery Charger with  
Thermal Regulation  
U
FEATURES  
DESCRIPTIO  
The LTC®1733 is a standalone constant-current/  
constant-voltage linear charger for lithium-ion batteries  
withanon-chippowerMOSFET.Internalthermalfeedback  
regulates the charge current to limit die temperature  
during high power operation or high ambient temperature  
conditions. This feature allows the user to program a high  
charge current without risk of damaging the LTC1733 or  
the handheld product.  
■
Complete Linear Charger for 1-Cell Lithium-Ion  
Batteries  
■
■
Thermal Regulation Maximizes Charging Rate  
without Risk of Overheating*  
No External MOSFET, Sense Resistor or Blocking  
Diode Required  
Up to 1.5A Charge Current  
Preset Charge Voltage with 1% Accuracy  
Programmable Charge Current with 7% Accuracy  
Programmable Charge Termination Timer  
Tiny Thermally Enhanced 10-Pin MSOP Package  
Charge Current Monitor Useful for Gas Gauging*  
C/10 Charge Current Detection Output  
Automatic Recharge  
■
■
■
■
■
■
■
■
■
■
■
No external current sense resistor is needed and no  
blocking diode is required due to the internal MOSFET  
architecture. The charge current and charge time can be  
set externally with a single resistor and capacitor, respec-  
tively. When the input supply (wall adapter) is removed,  
the LTC1733 automatically enters a low current sleep  
mode, dropping the battery drain current to less than 5µA.  
Thermistor Input for Temperature Qualified Charging  
AC Present Logic Output  
4.1V/4.2V Pin Selectable Output Voltage  
The LTC1733 also includes NTC temperature sensing,  
C/10 detection circuitry, AC present logic, 4.1V/4.2V pin  
selectability and low battery charge conditioning (trickle  
charging).  
U
APPLICATIO S  
■
Cellular Telephones  
The LTC1733 is available in a 10-pin thermally enhanced  
MSOP package.  
■
Handheld Computers  
■
Digital Still Cameras  
Charging Docks and Cradles  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
■
*Patent Pending  
U
TYPICAL APPLICATIO  
Charge Current vs Battery Voltage  
Standalone Li-Ion Battery Charger  
1200  
T
A
= 0°C  
CONSTANT  
CURRENT  
V
= 5V  
IN  
1000  
800  
600  
400  
200  
0
T
= 40°C  
8
2
A
T
= 25°C  
A
SEL  
V
I
= 1A  
CC  
BAT  
9
7
CONSTANT  
POWER  
4.7µF  
BAT  
4.2V  
LTC1733  
TIMER  
4
1-CELL  
Li-Ion  
PROG  
CONSTANT  
VOLTAGE  
GND  
NTC  
6
BATTERY*  
1.5k  
1%  
5
0.1µF  
TRICKLE  
CHARGE  
V
= 5V  
IN  
1733TA01  
θ
= 40°C/W  
JA  
2.5  
3
4
4.5  
2
3.5  
*AN OUTPUT CAPACITOR MAY BE REQUIRED  
DEPENDING ON BATTERY LEAD LENGTH  
BATTERY VOLTAGE (V)  
1733 TA01b  
sn1733 1733fs  
1
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