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LTC4078XEDD-PBF PDF预览

LTC4078XEDD-PBF

更新时间： 2024-01-22 05:49:13
品牌 Logo 应用领域
凌特 - Linear 电池
页数 文件大小 规格书
16页 182K
描述
Dual Input Li-Ion Battery Charger with Overvoltage Protection

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LTC4078XEDD-PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：DFN包装说明：HVSON, SOLCC10,.11,20
针数：10Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.17可调阈值：NO
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：S-PDSO-N10
JESD-609代码：e3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：10
最高工作温度：85 °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：SOLCC10,.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）：260
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
最大供电电流 (Isup)：0.8 mA最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：4.3 V标称供电电压 (Vsup)：5 V
表面贴装：YES技术：CMOS
温度等级：OTHER端子面层：Matte Tin (Sn)
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：30
宽度：3 mmBase Number Matches：1

LTC4078XEDD-PBF 数据手册

 浏览型号LTC4078XEDD-PBF的Datasheet PDF文件第2页浏览型号LTC4078XEDD-PBF的Datasheet PDF文件第3页浏览型号LTC4078XEDD-PBF的Datasheet PDF文件第4页浏览型号LTC4078XEDD-PBF的Datasheet PDF文件第5页浏览型号LTC4078XEDD-PBF的Datasheet PDF文件第6页浏览型号LTC4078XEDD-PBF的Datasheet PDF文件第7页 
LTC4078X  
Dual Input Li-Ion Battery  
Charger with Overvoltage Protection  
FEATURES  
DESCRIPTION  
The LTC®4078X is a standalone linear charger that is  
capable of charging a single-cell Li-Ion/Polymer battery  
from both wall adapter and USB inputs. The charger can  
detect power at the inputs and automatically select the  
appropriate power source for charging.  
■
22V Maximum Voltage for Wall Adapter and  
USB Inputs  
■
Charge Single-Cell Li-Ion Batteries from Wall  
Adapter and USB Inputs  
Automatic Input Power Detection and Selection  
Charge Current Programmable Up to 950mA from  
Wall Adapter Input  
Overvoltage Lockout for Wall Adapter and USB Inputs  
Battery Detection Input Disables Charger When No  
Battery is Present  
No External MOSFET, Sense Resistor or Blocking  
Diode Needed  
■
■
No external sense resistor or blocking diode is required  
for charging due to the internal MOSFET architecture.  
The LTC4078X features a maximum 22V rating for both  
wall adapter and USB inputs, although charging stops if  
the selected power source exceeds the overvoltage limit.  
Internal thermal feedback regulates the battery charge  
currenttomaintainaconstantdietemperatureduringhigh  
power operation or high ambient temperature conditions.  
The float voltage is fixed at 4.2V and the charge current  
is programmed with an external resistor. The LTC4078X  
terminatesthechargecyclewhenthechargecurrentdrops  
below the programmed termination threshold after the  
final float voltage is reached.  
■
■
■
■
Thermal Regulation Maximizes Charge Rate Without  
Risk of Overheating*  
■
■
■
■
■
■
■
Preset Charge Voltage with 0.ꢀ6 ꢁccuracy  
Programmable Charge Current Termination  
40µꢁ USB Suspend Current in Shutdown  
Charge Status Output  
ꢁutomatic Recharge  
Otherfeaturesincludebatterypresentdetection,automatic  
recharge,undervoltagelockout,chargestatusoutputs,and  
“powerpresent”statusoutputstoindicatethepresenceof  
wall adapter or USB power. The device is offered in a low  
profile (0.75mm) 3mm × 3mm 10-lead DFN package.  
No Trickle Charge  
ꢁvailable in a Thermally Enhanced, Low Profile  
(0.75mm) 10-Lead (3mm × 3mm) DFN Package  
APPLICATIONS  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All  
other trademarks are the property of their respective owners.  
*Protected by U.S. Patents including 6522118, 6700364.  
■
Cellular Telephones  
■
Handheld Computers  
■
Portable MP3 Players  
Digital Cameras  
■
Charger Current vs Supply Voltage  
TYPICAL APPLICATION  
900  
R
R
= 1.24k  
= 2k  
IDC  
IUSB  
High Voltage Dual Input Battery Charger  
800  
700  
600  
500  
400  
300  
200  
100  
0
V
V
= 3.5V  
BAT  
BATDET  
for Li-Ion Battery Pack  
= 0V  
CHARGE FROM DCIN  
800mA (WALL)  
500mA (USB)  
LTC4078X  
WALL  
ADAPTER  
DCIN  
BAT  
USB  
USBIN BATDET  
IUSB  
4.2V  
+
CHARGE  
FROM USBIN  
PORT  
1µF  
2k  
3.9k  
Li-Ion  
BATTERY  
PACK  
IDC  
ITERM  
GND  
1µF  
1%  
1.24k  
1%  
2k  
1%  
2
3
4
5
6
7
8
19 20  
4078X TA01  
SUPPLY VOLTAGE (V)  
4078x TA01b  
4078xf  
1
1234567...16

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