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LTC4099

更新时间： 2024-09-30 05:43:59
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
36页 361K
描述
I2C Controlled USB Power Manager/Charger with Overvoltage Protection

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中文翻译

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LTC4099 数据手册

 浏览型号LTC4099的Datasheet PDF文件第2页浏览型号LTC4099的Datasheet PDF文件第3页浏览型号LTC4099的Datasheet PDF文件第4页浏览型号LTC4099的Datasheet PDF文件第5页浏览型号LTC4099的Datasheet PDF文件第6页浏览型号LTC4099的Datasheet PDF文件第7页 
LTC4099  
2
I C Controlled  
USB Power Manager/Charger  
with Overvoltage Protection  
FEATURES  
DESCRIPTION  
2
Switching Regulator with Bat-TrackTM Adaptive Output The LTC®4099 is an I C controlled high efficiency USB  
n
Control Makes Optimal Use of Limited Input Power  
PowerPath™ controller and full-featured Li-Ion/Polymer  
batterycharger. Itseamlesslymanagespowerdistribution  
from multiple sources including USB, a wall adapter and  
a Li-Ion/Polymer battery.  
2
n
I C Port for Optimal System Performance and  
Status Information  
Input Overvoltage Protection  
n
n
Bat-Track Control of External Step-Down Switching  
Regulator Maximizes Efficiency from Automotive  
and Other High Voltage Sources  
Instant-On Operation with Low Battery  
Optional Overtemperature Battery Conditioner  
Improves High Temperature Battery Safety Margin  
Ideal Diode Seamlessly Connects Battery When Input  
Power is Limited or Unavailable  
The LTC4099 automatically limits its input current for  
USB compatibility. For automotive and other high volt-  
age applications, the LTC4099 interfaces with an external  
switching regulator. Both the USB input and the auxiliary  
input controller feature Bat-Track optimized charging to  
provide maximum power to the application and reduced  
heat in high power density applications.  
n
n
n
2
n
n
n
n
The I C port allows digital control of important application  
Full-Featured Li-Ion/Polymer Battery Charger  
1.5A Maximum Charge Current with Thermal Limiting  
Slew Control Reduces Switching EMI  
parameters including input current limit, charge current  
and float voltage. Several status bits can also be read back  
2
via I C.  
Ultra-Thin (0.55mm) 20-Lead 3mm × 4mm QFN  
An overvoltage protection circuit guards the LTC4099  
APPLICATIONS  
from high voltage damage on the low voltage V  
pin.  
BUS  
TheLTC4099isavailableintheultra-thin(0.55mm)20-lead  
3mm × 4mm QFN surface mount package.  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
PowerPath and Bat-Track are trademarks of Linear Technology Corporation. All other  
trademarks are the property of their respective owners. Protected by U.S. Patents,  
including 6522118, 6570372, 6700364, 6819094. Other patents pending.  
n
Media Players  
n
Portable Navigation Devices  
n
Smart Phones  
Industrial Handhelds  
n
n
Portable Medical Instruments  
Reduced Power Dissipation  
vs Linear Battery Charger  
TYPICAL APPLICATION  
I2C Controlled High Efficiency Battery Charger/  
1.8  
LINEAR BATTERY  
CHARGER  
V
I
= 5V  
CHARGE  
USB Power Manager  
IN  
= 1A  
OVERVOLTAGE  
PROTECTION  
1.6  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
USB  
3.3μH  
SYSTEM  
LOAD  
V
SW  
OUT  
BUS  
10μF  
ADDITIONAL POWER  
AVAILABLE FOR CHARGING  
V
OVGATE  
BAT  
10μF  
LTC4099  
6.2k  
OVSENS  
BATSENS  
NTCBIAS  
NTC  
SWITCHING BATTERY  
CHARGER  
2
2
CLPROG PROG GND  
I C  
TO μCONTROLLER  
100k  
+
0.1μF  
3.01k 1.02k  
100k  
T
Li-Ion  
3.5 3.6 3.7 3.8 3.9  
BATTERY VOLTAGE (V)  
4.1  
3.3 3.4  
4
4099 TA01a  
4099 TA01b  
4099f  
1
1234567...36

中文翻译

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