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LTC1731ES8-8.4#TRPBF PDF预览

LTC1731ES8-8.4#TRPBF

更新时间: 2024-01-24 02:52:22
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 169K
描述
LTC1731-8.X - Lithium-Ion Linear Battery Charger Controller; Package: SO; Pins: 8; Temperature Range: -40°C to 85°C

LTC1731ES8-8.4#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:SOP,
针数:8Reach Compliance Code:compliant
风险等级:5.33可调阈值:YES
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:R-PDSO-G8
长度:4.9 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:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.75 mm
最大供电电压 (Vsup):12 V最小供电电压 (Vsup):8.8 V
标称供电电压 (Vsup):9 V表面贴装:YES
温度等级:INDUSTRIAL端子面层:MATTE TIN (SN)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
宽度:3.9 mm

LTC1731ES8-8.4#TRPBF 数据手册

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LTC1731-8.2/LTC1731-8.4  
Lithium-Ion Linear  
Battery Charger Controller  
U
FEATURES  
DESCRIPTIO  
The LTC®1731-8.2/LTC1731-8.4 are complete constant-  
current/constant-voltagelinearchargercontrollersfor2-  
celllithium-ion(Li-Ion)batteries.Nickel-cadmium(NiCd)  
and nickel-metal-hydride (NiMH) batteries can also be  
charged with constant current using external termina-  
tion. The external sense resistor sets the charge current  
with 7% accuracy. An internal resistor divider and preci-  
sion reference set the final float potential with 1% accu-  
racy. The output float voltages are set internally to 8.2V  
(LTC1731-8.2) or 8.4V (LTC1731-8.4).  
Complete Linear Charger Controller for  
2-Cell Lithium-Ion Batteries  
1% Voltage Accuracy  
Programmable Charge Current  
C/10 Charge Current Detection Output  
Programmable Charge Termination Timer  
Space Saving 8-Pin MSOP Package  
Automatic Sleep Mode When Input Supply  
is Removed (15µA Battery Drain)  
Automatic Trickle Charging of Low Voltage Cells  
Programmable for Constant-Current-Only Mode  
When the input supply is removed, the LTC1731-8.2/  
LTC1731-8.4automaticallyenteralowcurrentsleepmode,  
dropping the battery drain current to typically 15µA. An  
internalcomparatordetectstheend-of-charge(C/10)con-  
dition while a programmable timer, using an external  
capacitor, setsthetotalchargetime. Fullydischargedcells  
are automatically trickle charged at 10% of the pro-  
grammed current until battery voltage exceeds 4.95V.  
U
APPLICATIO S  
Cellular Phones  
Handheld Computers  
Charging Docks and Cradles  
Programmable Current Source  
The LTC1731-8.2/LTC1731-8.4 are available in the 8-pin  
MSOP and SO packages. For 1-cell Li-Ion battery charg-  
ing, see the LTC1731-4.1 and LTC1731-4.2 data sheets.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
400mA Li-Ion Charger  
Typical Li-Ion Charge Cycle  
V
= 9V  
IN  
9
CONSTANT  
CURRENT  
CONSTANT  
VOLTAGE  
MBRM120T3  
7
BATTERY VOLTAGE  
R
2k  
SENSE  
V
1µF  
CC  
400  
300  
200  
100  
0
8
7
6
0.2Ω  
8
6
400mA HR BATTERY  
CHARGE  
STATUS  
SENSE  
DRV  
LTC1731-8.4  
TIMER  
BAT  
PROG  
GND  
2
3
Q1  
Si9430DY  
CHRG  
CHARGE CURRENT  
I
= 400mA  
BAT  
1
5
CHRG  
LED OFF  
TIMER  
STOPS  
C
TIMER  
0.1µF  
+
R
*
2-CELL  
Li-ION  
PROG  
10µF  
4
19.6k  
2.0  
TIME (HOURS)  
3.0  
0
0.5  
1.0  
1.5  
2.5  
1731 TA01  
1731 TA01b  
*SHUTDOWN INVOKED BY FLOATING THE PROG PIN  
sn1731 17318fs  
1

LTC1731ES8-8.4#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC1731ES8-8.4#PBF Linear

完全替代

LTC1731-8.X - Lithium-Ion Linear Battery Charger Controller; Package: SO; Pins: 8; Tempera
LTC1731ES8-8.4 Linear

完全替代

Lithium-Ion Linear Battery Charger Controller

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