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LTC1734LES6-4.2#PBF

更新时间： 2024-01-02 19:51:45
品牌 Logo 应用领域
凌特 - Linear 电源电路电池电源管理电路
页数 文件大小 规格书
12页 186K
描述
LTC1734L - Lithium-Ion Linear Battery Charger in ThinSOT; Package: SOT; Pins: 6; Temperature Range: -40°C to 85°C

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中文翻译

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LTC1734LES6-4.2#PBF 技术参数

是否Rohs认证：符合生命周期：Transferred
零件包装代码：SOT包装说明：VSSOP,
针数：6Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.15Is Samacsys：N
可调阈值：YES模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：R-PDSO-G6JESD-609代码：e3
长度：2.9 mm湿度敏感等级：1
信道数量：1功能数量：1
端子数量：6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：VSSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, VERY 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 mm
最大供电电压 (Vsup)：8 V最小供电电压 (Vsup)：4.55 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 (Sn)
端子形式：GULL WING端子节距：0.95 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：1.625 mmBase Number Matches：1

LTC1734LES6-4.2#PBF 数据手册

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LTC1734L  
Lithium-Ion Linear  
Battery Charger in ThinSOT  
U
FEATURES  
DESCRIPTIO  
Low Profile (1mm) ThinSOTTM Package  
TheLTC®1734Lisalowcost,singlecell,constant-current/  
constant-voltage Li-Ion battery charger controller. When  
combined with a few external components, the SOT-23  
packageformsaverysmall,lowcostchargerforsinglecell  
lithium-ion batteries. The LTC1734L is a lower charge  
current version of the LTC1734.  
■
■
Programmable Charge Current: 50mA to 180mA  
■
No Blocking Diode Required  
■
No Sense Resistor Required  
■
1% Accurate Preset Voltage: 4.2V  
■
Charge Current Monitor Output  
for Charge Termination  
The LTC1734L provides a fixed float voltage of 4.2V with  
1% accuracy (for 4.1V and 4.15V float voltages, contact  
LTC Marketing). Constant current is programmed using a  
singleexternalresistorbetweenthePROGpinandground.  
Manual shutdown is accomplished by floating the pro-  
gram resistor while removing input power automatically  
puts the LTC1734L into a sleep mode. Both the shutdown  
and sleep modes drain near zero current from the battery.  
■
Automatic Sleep Mode with Input Supply Removal  
■
Manual Shutdown  
■
Negligible Battery Drain Current in Shutdown  
■
Undervoltage Lockout  
■
Self Protection for Overcurrent/Overtemperature  
U
APPLICATIO S  
Charge current can be monitored via the voltage on the  
PROG pin allowing a microcontroller or ADC to read the  
currentanddeterminewhentoterminatethechargecycle.  
The output driver is both current limited and thermally  
protectedtopreventtheLTC1734Lfromoperatingoutside  
of safe limits. No external blocking diode is required.  
■
Cellular Telephones  
■
Handheld Computers  
■
Digital Cameras  
■
Charging Docks and Cradles  
■
Low Cost and Small Size Chargers  
■
Programmable Current Sources  
The LTC1734L can also function as a general purpose  
current source or as a current source for charging nickel-  
cadmium (NiCd) and nickel-metal-hydride (NiMH) batter-  
ies using external termination.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
ThinSOT is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
PROG Pin Indicates Charge Status  
5V  
V
BAT  
80mA Li-Ion Battery Charger  
4V  
3V  
3
2
1
6
5
V
IN  
V
I
SENSE  
CC  
5V  
LTC1734L  
1µF  
UMT4403  
GND  
DRIVE  
CONSTANT  
CURRENT  
CONSTANT  
VOLTAGE  
I
= 80mA  
2V  
BAT  
4
PROG  
BAT  
1.5V  
V
PROG  
SINGLE  
Li-Ion  
BATTERY  
+
10µF  
R
PROG  
4.7k  
1V  
1734 TA01  
0V  
CHARGING  
BEGINS  
CHARGING  
COMPLETE  
1734 TA01b  
1734lf  
1
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