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Datasheet > LTC4008EGN#TRPBF
LTC4008EGN#TRPBF PDF预览

LTC4008EGN#TRPBF

更新时间： 2024-01-26 13:41:39
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
24页 222K
描述
LTC4008 - 4A, High Efficiency, Multi-Chemistry Battery Charger; Package: SSOP; Pins: 20; Temperature Range: -40°C to 85°C

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中文翻译

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LTC4008EGN#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：SSOP,
针数：20Reach Compliance Code：compliant
风险等级：5.35可调阈值：YES
模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUITJESD-30 代码：R-PDSO-G20
JESD-609代码：e3长度：8.649 mm
湿度敏感等级：1信道数量：1
功能数量：1端子数量：20
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：SSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.75 mm最大供电电压 (Vsup)：28 V
最小供电电压 (Vsup)：6 V标称供电电压 (Vsup)：20 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：0.635 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：3.899 mm

LTC4008EGN#TRPBF 数据手册

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LTC4008  
4A, High Efficiency,  
Multi-Chemistry Battery Charger  
FEATURES  
DESCRIPTION  
The LTC®4008 is a constant-current/constant-voltage  
chargercontroller.ThePWMcontrollerusesasynchronous,  
quasi-constant frequency, constant off-time architecture  
thatwillnotgenerateaudiblenoiseevenwhenusingceramic  
capacitors.Chargingcurrentisprogrammablewithasense  
resistorandprogrammingresistorto 4%typicalaccuracy.  
n
General Purpose Charger Controller  
n
High Conversion Efficiency: Up to 96%  
n
Output Currents Exceeding 4A  
±±.ꢀ% Voltage Accuracy  
AC Adapter Current Limiting Maximizes  
Charge Rate*  
Thermistor Input for Temperature Qualified Charging  
Wide Input Voltage Range: 6V to 28V  
Wide Output Voltage: 3V to 28V  
0.5V Dropout Voltage; Maximum Duty Cycle: 98%  
Programmable Charge Current: 4% ꢀccuracy  
Indicator Outputs for Charging, C/10 Current  
Detection, ꢀC ꢀdapter Present, Input Current  
Limiting and Faults  
n
n
n
Charging current can be monitored as a voltage across  
the programming resistor. ꢀn external resistor divider and  
precision internal reference set the final float voltage.  
n
n
n
n
n
The LTC4008 includes a thermistor sensor input that will  
suspend charging if an unsafe temperature condition is  
detectedandwillautomaticallyresumechargingwhenbat-  
tery temperature returns to within safe limits; a FAULT pin  
indicatesthiscondition. ꢀFLAGpinindicateswhencharg-  
ing current has decreased below 10% of the programmed  
current. ꢀn external sense resistor programs ꢀC adapter  
n
n
Charging Current Monitor Output  
ꢀvailable in a 20-Pin Narrow SSOP Package  
current limiting. The I pin indicates when the charging  
CL  
APPLICATIONS  
current is being reduced by input current limiting so that  
n
Notebook Computers  
the charging algorithm can adapt.  
n
Portable Instruments  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
n
PowerPath and No R  
are trademarks of Linear Technology Corporation. ꢀll other  
Battery Backup Systems  
SENSE  
trademarks are the property of their respective owners. Protected by U.S. Patents including  
5723970.  
TYPICAL APPLICATION  
12.3V, 4A Li-Ion Charger  
INPUT SWITCH  
DCIN  
0V TO 28V  
0.1μF  
140k*  
LTC4008  
BꢀTMON  
V
LOGIC  
DCIN  
INFET  
CLP  
0.1μF  
4.99k  
0.02Ω  
V
100k 100k  
FB  
SYSTEM  
LOꢀD  
I
I
CL  
CL  
20μF  
10μH  
ꢀCP  
FAULT  
FLAG  
ꢀCP/SHDN  
FAULT  
FLAG  
CLN  
TGꢀTE  
BGꢀTE  
PGND  
CSP  
Q1  
0.025Ω  
32.4k  
Li-Ion  
BꢀTTERY  
Q2  
NTC  
20μF  
R
T
3.01k  
15k*  
I
BꢀT  
TH  
THERMISTOR  
3.01k  
GND  
PROG  
6.04k  
0.12μF  
150k  
10k  
CHꢀRGING  
CURRENT  
MONITOR  
NTC  
0.47μF  
Q1: Si4431BDY  
Q2: FDC645N  
26.7k  
0.0047μF  
NOTE: * 0.25% TOLERꢀNCE  
ꢀLL OTHER RESISTORS ꢀRE 1% TOLERꢀNCE  
4008 Tꢀ01  
4008fb  
1
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中文翻译

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LTC4008EGN#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC4008EGN#PBF Linear

完全替代

 LTC4008 - 4A, High Efficiency, Multi-Chemistry Battery Charger; Package: SSOP; Pins: 20; T

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