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LTC4080XEMSE#TRPBF

更新时间： 2024-02-26 21:29:25
品牌 Logo 应用领域
凌特 - Linear 光电二极管
页数 文件大小 规格书
22页 1077K
描述
LTC4080X - 500mA Standalone Li-Ion Charger with Integrated 300mA Synchronous Buck; Package: MSOP; Pins: 10; Temperature Range: -40°C to 85°C

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LTC4080XEMSE#TRPBF 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：HTSSOP,
针数：10Reach Compliance Code：compliant
风险等级：5.7可调阈值：YES
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：S-PDSO-G10
JESD-609代码：e3长度：3 mm
湿度敏感等级：1信道数量：2
功能数量：1端子数量：10
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：HTSSOP
封装形状：SQUARE封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.1 mm最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：3.75 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：Matte Tin (Sn)
端子形式：GULL WING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

LTC4080XEMSE#TRPBF 数据手册

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LTC4080X  
500mA Standalone Li-Ion  
Charger with Integrated 300mA  
Synchronous Buck in 3mm × 3mm DFN  
DescripTion  
FeaTures  
The LTC®4080X is a complete constant-current/constant-  
voltage linear battery charger for a single-cell 4.2V  
lithium-ion/polymer battery with an integrated 300mA  
synchronousbuckconverter.A3mm× 3mmDFNpackage  
and low external component count make the LTC4080X  
especially suitable for portable applications. Furthermore,  
the LTC4080X is specifically designed to work within USB  
power specifications.  
n
Complete Linear Battery Charger with Integrated  
Buck Converter in 3mm x 3mm DFN Package  
Battery Charger:  
n
Constant-Current/Constant-Voltage Operation  
with Thermal Feedback to Maximize Charge Rate  
Without Risk of Overheating  
Internal 4.5 Hour Safety Timer for Termination  
Charge Current Programmable Up to 500mA with  
n
n
5% Accuracy  
The CHRG pin indicates when charge current has  
dropped to ten percent of its programmed value (C/10).  
An internal 4.5 hour timer terminates the charge cycle.  
The full-featured LTC4080X battery charger also includes  
automatic recharge and soft-start to limit inrush current.  
If trickle charging is desired, please see the LTC4080  
data sheet.  
n
C/10 Charge Current Detection Output  
n
5µA Supply Current in Shutdown Mode  
Switching Regulator:  
n
High Efficiency Synchronous Buck Converter  
n
300mA Output Current (Constant-Frequency Mode)  
n
2.7V to 4.5V Input Range (Powered from BAT Pin)  
n
0.8V to V Output Range  
BAT  
n
The LTC4080X integrates a synchronous buck converter  
thatispoweredfromtheBATpin.Ithasanadjustableoutput  
voltage and can deliver up to 300mA of load current. The  
buck converter also features low-current high-efficiency  
BurstModeoperationthatcanbeselectedbytheMODEpin.  
MODE Pin Selects Fixed (2.25MHz) Constant-Fre-  
quency PWM Mode or Low I (23µA) Burst Mode®  
CC  
Operation  
n
2µA BAT Current in Shutdown Mode  
applicaTions  
TheLTC4080Xisavailablein10-lead,lowprofile(0.75mm)  
3mm × 3mm DFN and 10-lead MSE packages.  
n
Wireless Headsets  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
Burst Mode is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners. Protected by U.S. Patents, including 6522118.  
n
Bluetooth Applications  
Portable MP3 Players  
n
n
Multifunction Wristwatches  
Buck Efficiency vs Load Current  
(VOUT = 1.8V)  
Typical applicaTion  
100  
80  
60  
40  
20  
0
1000  
100  
10  
Li-Ion Battery Charger with 1.8V Buck Regulator  
500mA  
EFFICIENCY  
(Burst)  
V
CC  
V
BAT  
EN_BUCK  
SW  
CC  
4.2V  
EFFICIENCY  
(PWM)  
(3.75V  
to 5.5V)  
+
Li-Ion/  
POWER  
LOSS  
4.7µF  
POLYMER  
BATTERY  
1OµH  
(PWM)  
LTC4080X  
10pF  
1M  
4.7µF  
1
V
OUT  
POWER LOSS  
EN_CHRG  
FB  
(1.8V/300mA)  
(Burst)  
MODE GND PROG  
V
V
= 3.8V  
= 1.8V  
BAT  
OUT  
C
OUT  
4.7µF  
0.1  
0.01  
806Ω  
806k  
L = 10µH  
C = 4.7µF  
4080X TA01a  
0.01  
0.1  
1
10  
100  
1000  
LOAD CURRENT (mA)  
4080X TA01b  
4080Xfa  
1
For more information www.linear.com/LTC4080X  
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