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LTC4058EDD-4.2 PDF预览

LTC4058EDD-4.2

更新时间： 2024-11-18 22:17:39
品牌 Logo 应用领域
凌特 - Linear 电池
页数 文件大小 规格书
12页 182K
描述
Standalone Linear Li-Ion Battery Charger with Thermal Regulation in DFN

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LTC4058EDD-4.2 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：3 X 3 MM, MO-229WEED-1, PLASTIC, DFN-8
针数：8Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.14可调阈值：YES
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
封装等效代码：SOLCC8,.11,20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
电源：5 V认证状态：Not Qualified
座面最大高度：0.85 mm子类别：Power Management Circuits
最大供电电流 (Isup)：1 mA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技术：CMOS
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 mmBase Number Matches：1

LTC4058EDD-4.2 数据手册

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LTC4058-4.2/LTC4058X-4.2  
Standalone Linear  
Li-Ion Battery Charger with  
Thermal Regulation in DFN  
U
FEATURES  
DESCRIPTIO  
■
Programmable Charge Current Up to 950mA  
The LTC®4058 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 LTC4058 ideally suited for portable applications. Fur-  
thermore, the LTC4058 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*  
■
Battery Kelvin Sensing Improves Charging Accuracy  
The LTC4058 can Kelvin sense the battery terminal for  
more accurate float voltage charging. No external sense  
resistor or external blocking diode are required due to the  
internal MOSFET architecture. Thermal feedback regu-  
latesthechargecurrenttolimitthedietemperatureduring  
high power operation or high ambient temperature condi-  
tions. The charge voltage is fixed at 4.2V and the charge  
current is programmed with a resistor. The LTC4058  
terminates the charge cycle when the charge current  
drops to 10% of the programmed value after the final float  
voltage is reached.  
■
Charges Directly from a USB Port  
C/10 Charge 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 (LTC4058)  
■
Available Without Trickle Charge (LTC4058X)  
■
Soft-Start Limits Inrush Current  
■
Low Profile (3mm × 3mm × 0.75mm) DFN Package  
When the input supply (wall adapter or USB supply) is  
removed,theLTC4058entersalowcurrentstatedropping  
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 an input voltage.  
U
APPLICATIO S  
■
Cellular Telephones, PDAs, MP3 Players  
Bluetooth Applications  
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
*US Patent 6,522,118  
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 Kelvin Sense  
CONSTANT  
VOLTAGE  
600mA  
V
IN  
V
CC  
BAT  
BSENSE  
4.5V TO 6.5V  
LTC4058-4.2  
CHRG  
ACPR  
1-CELL  
Li-Ion  
BATTERY  
+
EN  
PROG  
GND  
V
= 5V  
CC  
JA  
1.65k  
1µF  
θ
= 40°C/W  
R
= 1.65k  
PROG  
405842 TA01  
T
A
= 25°C  
0.25 0.5 0.75 1.0 1.25  
1.75 2.0 2.25  
0
1.5  
405842 TA02  
TIME (HOURS)  
sn405842 405842fs  
1
1234567...12

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