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LTC4100 PDF预览

LTC4100

更新时间： 2023-12-20 18:44:43
品牌 Logo 应用领域
亚德诺 - ADI 电池控制器
页数 文件大小 规格书
30页 320K
描述
智能电池充电器控制器

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中文翻译

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LTC4100 数据手册

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LTC4100  
Smart Battery  
Charger Controller  
FeaTures  
DescripTion  
The LTC®4100 Smart Battery Charger is a single chip  
chargingsolutionthatdramaticallysimplifiesconstruction  
of an SBS compliant system. The LTC4100 implements  
a Level 2 charger function whereby the charger can be  
programmed by the battery or by the host. A SafetySignal  
onthebatterybeingchargedismonitoredfortemperature,  
connectivity and battery type information. The SMBus  
interface remains alive when the AC power adapter is  
removed and responds to all SMBus activity directed to  
it, including SafetySignal status (via the ChargerStatus  
command). The charger also provides an interrupt to the  
host whenever a status change is detected (e.g., battery  
removal, AC adapter connection).  
n
Single Chip Smart Battery Charger Controller  
n
100% Compliant (Rev. 1.1) SMBus Support Allows  
for Operation with or without Host  
n
SMBus Accelerator Improves SMBus Timing  
n
Wide Output Voltage Range: 3.5V to 26V  
n
Hardware Interrupt and SMBAlert Response  
Eliminate Interrupt Polling  
n
High Efficiency Synchronous Buck Charger  
n
0.5V Dropout Voltage; Maximum Duty Cycle > 98%  
n
AC Adapter Current Limit Maximizes Charge Rate  
n
0.8% Voltage Accuracy; 4% Current Accuracy  
n
Up to 4A Charging Current Capability  
n
10-Bit DAC for Charge Current Programming  
n
11-Bit DAC for Charger Voltage Programming  
Charging current and voltage are restricted to chemistry-  
specific limits for improved system safety and reliability.  
Limits are programmable by two external resistors. Ad-  
ditionally, the maximum average current from the AC  
adapter is programmable to avoid overloading the adapter  
whensimultaneouslysupplyingloadcurrentandcharging  
current. When supplying system load current, charg-  
ing current is automatically reduced to prevent adapter  
overload.  
n
User-Selectable Overvoltage and Overcurrent Limits  
n
High Noise Immunity SafetySignal Sensor  
Available in a 24-Pin SSOP Package  
n
applicaTions  
n
Portable Instruments and Computers  
Data Storage Systems and Battery Backup Servers  
n
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. Protected by U.S. Patents including 6650174 and 5723970.  
Typical applicaTion  
DCIN  
0.1µF  
13.7k  
V
PART  
BAT  
1.21k  
3V  
TO 5.5V  
< 5.5V  
> 5.5V  
LTC4101  
LTC4100  
0.1µF  
5k  
0.033Ω  
LTC4100  
17  
11  
6
5
V
DCIN  
INFET  
CLP  
DD  
4
DCDIV  
CHGEN  
ACP  
SYSTEM LOAD  
24  
23  
1
CHGEN  
ACP  
10  
7
20µF  
10µH  
SMART BATTERY  
CLN  
0.025Ω  
SMBALERT TGATE  
9
3
SCL  
SDA  
THB  
THA  
BGATE  
PGND  
CSP  
8
2
20µF  
15  
16  
13  
14  
20  
21  
22  
18  
19  
12  
BAT  
I
V
SET  
LIM  
1.13k  
100Ω  
V
I
I
0.01µF  
0.1µF  
LIM  
TH  
GND  
6.04k  
0.12µF  
SafetySignal  
10k  
DC  
0.0015µF  
54.9k  
0.068µF  
SMBALERT#  
SMBCLK  
SMBCLK  
SMBDAT  
SMBDAT  
4100 TA01  
Figure 1. 4A Smart Battery Charger  
4100fc  
1
For more information www.linear.com/LTC4100  
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