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LTC4085EDE PDF预览

LTC4085EDE

更新时间： 2024-09-25 12:09:59
品牌 Logo 应用领域
凌特 - Linear 电源电路电池二极管电源管理电路光电二极管控制器
页数 文件大小 规格书
24页 290K
描述
USB Power Manager with Ideal Diode Controller and Li-Ion Charger

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中文翻译

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LTC4085EDE 技术参数

是否Rohs认证：不符合生命周期：Transferred
零件包装代码：DFN包装说明：HVSON, SOLCC14,.12,20
针数：14Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.13Is Samacsys：N
可调阈值：YES模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：R-PDSO-N14JESD-609代码：e0
长度：4 mm湿度敏感等级：1
信道数量：1功能数量：1
端子数量：14最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：HVSON封装等效代码：SOLCC14,.12,20
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：235电源：5 V
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Power Management Circuits最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：4.35 V标称供电电压 (Vsup)：5 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：DUAL处于峰值回流温度下的最长时间：20
宽度：3 mmBase Number Matches：1

LTC4085EDE 数据手册

 浏览型号LTC4085EDE的Datasheet PDF文件第2页浏览型号LTC4085EDE的Datasheet PDF文件第3页浏览型号LTC4085EDE的Datasheet PDF文件第4页浏览型号LTC4085EDE的Datasheet PDF文件第5页浏览型号LTC4085EDE的Datasheet PDF文件第6页浏览型号LTC4085EDE的Datasheet PDF文件第7页 
LTC4085  
USB Power Manager with  
Ideal Diode Controller and  
Li-Ion Charger  
FEATURES  
DESCRIPTION  
n
Seamless Transition Between Input Power Sources:  
The LTC®4085 is a USB power manager and Li-Ion battery  
charger designed for portable battery-powered applica-  
tions. The part controls the total current used by the USB  
peripheral for operation and battery charging. The total  
input current can be limited to 20% or 100% of a pro-  
grammed value up to 1.5A (typically 100mA or 500mA).  
Battery charge current is automatically reduced such that  
the sum of the load current and charge current does not  
exceed the programmed input current limit.  
Li-Ion Battery, USB and 5V Wall Adapter  
n
215mΩ Internal Ideal Diode Plus Optional External  
IdealDiodeControllerProvideLowLossPowerPath™  
When Wall Adapter/USB Input Not Present  
n
Load Dependent Charging Guarantees Accurate USB  
Input Current Compliance  
n
Constant-Current/Constant-Voltage Operation with  
Thermal Feedback to Maximize Charging Rate Without  
Risk of Overheating*  
The LTC4085 includes a complete constant-current/  
constant-voltage linear charger for single cell Li-ion bat-  
teries. The float voltage applied to the battery is held to a  
tight0.8%tolerance, andchargecurrentisprogrammable  
using an external resistor to ground. An end-of-charge  
status output CHRG indicates full charge. Total charge  
time is programmable by an external capacitor to ground.  
When the battery drops 100mV below the float voltage,  
automatic recharging of the battery occurs. Also featured  
is an NTC thermistor input used to monitor battery tem-  
perature while charging.  
n
Selectable 100% or 20% Input Current Limit  
(e.g., 500mA/100mA)  
n
Battery Charge Current Independently Programmable  
Up to 1.2A  
n
Preset 4.2V Charge Voltage with 0.8% Accuracy  
n
C/10 Charge Current Detection Output  
n
NTC Thermistor Input for Temperature Qualified Charging  
n
Tiny (4mm × 3mm × 0.75mm) 14-Lead DFN Package  
APPLICATIONS  
n
Portable USB Devices: Cameras, MP3 Players, PDAs  
The LTC4085 is available in a 14-lead low profile 4mm ×  
3mm DFN package.  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
PowerPath is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners. Protected by U.S. Patents, including 6522118,6700364.  
Other patents pending.  
TYPICAL APPLICATION  
Input and Battery Current vs Load Current  
I
LOAD  
RPROG = 100k, RCLPROG = 2k  
5V WALL  
ADAPTER  
INPUT  
TO LDOs,  
REGs, ETC  
600  
4.7μF  
I
IN  
5V (NOM)  
I
IN  
FROM USB  
500  
400  
300  
200  
100  
0
IN  
WALL  
ACPR  
OUT  
CABLE V  
510Ω  
1k  
BUS  
4.7μF  
SUSPEND USB POWER  
100mA 500mA SELECT  
SUSP  
HPWR  
PROG  
CLPROG  
NTC  
I
LOAD  
LTC4085  
GND  
GATE  
BAT  
*
I
BAT  
(CHARGING)  
CHRG  
I
V
NTC  
TIMER  
BAT  
I
BAT  
(DISCHARGING)  
+
10k  
WALL = 0V  
100  
–100  
0
200  
300 500  
400  
(mA)  
600  
*
OPTIONAL - TO LOWER  
IDEAL DIODE IMPEDANCE  
I
LOAD  
0.1μF  
100k  
2k  
10k  
4085 TA01b  
4085 TA01  
4085fd  
1
1234567...24

中文翻译

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LTC4085EDE 替代型号

型号 品牌 替代类型 描述 数据表
LTC4085EDE#TRPBF Linear

完全替代

 LTC4085 - USB Power Manager with Ideal Diode Controller and Li-Ion Charger; Package: DFN;

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