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LTC4068XEDD-4.2#TR PDF预览

LTC4068XEDD-4.2#TR

更新时间： 2024-09-15 19:28:23
品牌 Logo 应用领域
凌特 - Linear 电池光电二极管
页数 文件大小 规格书
12页 135K
描述
LTC4068-4.2 - Standalone Linear Li-Ion Battery Charger with Programmable Termination; Package: DFN; Pins: 8; Temperature Range: -40°C to 85°C

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LTC4068XEDD-4.2#TR 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,
针数：8Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.16可调阈值：NO
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：S-PDSO-N8
JESD-609代码：e0长度：3 mm
湿度敏感等级：1信道数量：1
功能数量：1端子数量：8
最高工作温度：70 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装形状：SQUARE封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：235认证状态：Not Qualified
座面最大高度：0.85 mm最大供电电压 (Vsup)：6.5 V
最小供电电压 (Vsup)：4.25 V标称供电电压 (Vsup)：5 V
表面贴装：YES温度等级：COMMERCIAL
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 mm
Base Number Matches：1

LTC4068XEDD-4.2#TR 数据手册

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LTC4068-4.2/LTC4068X-4.2  
Standalone Linear  
Li-Ion Battery Charger with  
Programmable Termination  
U
FEATURES  
DESCRIPTIO  
■
Programmable Charge Current Up to 950mA  
The LTC®4068 is a complete constant-current/constant-  
voltage linear charger for single cell lithium-ion batteries.  
Its DFN package and low external component count make  
the LTC4068 ideally suited for portable applications. Fur-  
thermore, the LTC4068 is designed to work within USB  
power specifications.  
■
Complete Linear Charger in DFN Package  
■
No MOSFET, Sense Resistor or Blocking Diode  
Required  
■
Thermal Regulation Maximizes Charge Rate  
Without Risk of Overheating*  
■
Charges Directly from a USB Port  
No external sense resistor or external blocking diode are  
requiredduetotheinternalMOSFETarchitecture.Thermal  
feedback regulates the charge current to limit the die  
temperature during high power operation or high ambient  
temperature conditions. The charge voltage is fixed at  
4.2V and the charge current is programmed with a resis-  
tor. The LTC4068 terminates the charge cycle when the  
charge current drops below the programmed termination  
threshold after the final float voltage is reached.  
■
Programmable Charge Current Termination  
■
Preset 4.2V Charge Voltage with ±1% Accuracy  
■
Charge Current Monitor Output for Gas Gauging*  
■
Automatic Recharge  
■
Charge Status Output  
■
“AC Present” Output  
■
2.9V Trickle Charge Threshold (LTC4068)  
■
Available Without Trickle Charge (LTC4068X)  
■
Soft-Start Limits Inrush Current  
■
When the input supply (wall adapter or USB supply) is  
removed,theLTC4068entersalowcurrentstatedropping  
the battery drain current to less than 2µA. Other features  
include charge current monitor, undervoltage lockout,  
automatic recharge and status pins to indicate charge  
termination and the presence of adequate input voltage.  
Low Profile (3mm × 3mm × 0.75mm) DFN Package  
U
APPLICATIO S  
■
Cellular Telephones, PDAs, MP3 Players  
Bluetooth Applications  
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Protected by U.S. Patents, including 6522118.  
U
TYPICAL APPLICATIO  
Complete Charge Cycle (750mAh Battery)  
700  
600  
500  
400  
300  
200  
100  
0
4.75  
4.50  
4.25  
4.00  
3.75  
3.50  
3.25  
3.00  
CONSTANT  
CURRENT  
Single Cell Li-Ion Battery Charger with C/5 Termination  
CONSTANT  
VOLTAGE  
600mA  
V
IN  
V
CC  
BAT  
4.5V TO 6.5V  
LTC4068-4.2  
1-CELL  
Li-Ion  
BATTERY  
+
CHRG  
ACPR  
EN  
ITERM  
PROG  
V
= 5V  
825Ω  
CC  
θ
= 40°C/W  
GND  
JA  
1µF  
1.65k  
R
R
= 1.65k  
PROG  
TERM  
= 825Ω  
406842 TA01  
T
A
= 25°C  
0.25 0.5 0.75 1.0 1.25  
1.75 2.0 2.25  
0
1.5  
406842 TA02  
TIME (HOURS)  
406842fa  
1
1234567...12

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