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LTC4007EUFD-1 PDF预览

LTC4007EUFD-1

更新时间： 2024-02-07 17:11:19
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
24页 266K
描述
4A, High Efficiency, Li-Ion Battery Charger

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中文翻译

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LTC4007EUFD-1 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：QFN包装说明：HVQCCN,
针数：24Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.16模拟集成电路 - 其他类型：BATTERY CHARGE CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：28 V最小输入电压：6 V
标称输入电压：20 VJESD-30 代码：R-PQCC-N24
JESD-609代码：e3长度：5 mm
湿度敏感等级：1功能数量：1
端子数量：24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：HVQCCN封装形状：RECTANGULAR
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：0.8 mm
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：345 kHz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：QUAD处于峰值回流温度下的最长时间：30
宽度：4 mmBase Number Matches：1

LTC4007EUFD-1 数据手册

 浏览型号LTC4007EUFD-1的Datasheet PDF文件第2页浏览型号LTC4007EUFD-1的Datasheet PDF文件第3页浏览型号LTC4007EUFD-1的Datasheet PDF文件第4页浏览型号LTC4007EUFD-1的Datasheet PDF文件第5页浏览型号LTC4007EUFD-1的Datasheet PDF文件第6页浏览型号LTC4007EUFD-1的Datasheet PDF文件第7页 
LTC4007-1  
4A, High Efficiency,  
Li-Ion Battery Charger  
U
FEATURES  
DESCRIPTIO  
The LTC®4007-1 is a constant-current/constant-voltage  
charger controller for 3- or 4-cell lithium-ion batteries.  
The PWM controller uses a synchronous, quasi-constant  
frequency, constant off-time architecture that will not  
generate audible noise even when using ceramic capaci-  
tors. Chargingcurrentisprogrammableto ± 4%accuracy  
using a programming resistor. Charging current can also  
be monitored as a voltage across the programming  
resistor.  
■
Charger Controller for 3- or 4-Cell  
Lithium-Ion Batteries  
■
High Conversion Efficiency: Up to 96%  
■
Output Currents Exceeding 4A  
■
±0.8% Charging Voltage Accuracy  
■
Built-In Charge Termination for Li-Ion Batteries  
■
AC Adapter Current Limiting Maximizes Charge Rate*  
■
Thermistor Input for Temperature Qualified Charging  
■
Wide Input Voltage Range: 6V to 28V  
■
0.5V Dropout Voltage; Maximum Duty Cycle: 98%  
The output float voltage is pin programmed for cell count  
(3 cells or 4 cells) and chemistry (4.2V/4.1V). A timer,  
programmed by an external resistor, sets the total charge  
time.  
■
Programmable Charge Current: ±4% Accuracy  
■
Indicator Outputs for Charging, C/10 Current  
Detection, AC Adapter Present, Low Battery, Input  
Current Limiting and Faults  
■
The LTC4007-1 includes a thermistor input, which sus-  
pends charging if an unsafe temperature condition is de-  
tected. If the cell voltage is less than 3.25V, a low-battery  
indicatorassertsandcanbeusedtoprogramatricklecharge  
current to safely charge depleted batteries. The FAULT pin  
is also asserted and charging terminates if the low-battery  
conditionpersistsformorethan1/4ofthetotalchargetime.  
Charging Current Monitor Output  
■
Available in a 24-Pin 4mm × 5mm QFN Package  
U
APPLICATIO S  
■
Notebook Computers  
■
Portable Instruments  
, LTC and LT are registered trademarks of Linear Technology Corporation. All other  
trademarks are the property of their respective owners.  
*Protected by U.S. Patents including 5723970.  
■
Battery-Backup Systems  
Li-Ion Chargers  
■
U
TYPICAL APPLICATIO  
12.6V, 4A Li-Ion Battery Charger  
INPUT SWITCH  
DCIN  
0V TO 28V  
LOW BATTERY  
THRESHOLD (Per Cell)  
(4.2V/4.1V)  
0.1µF  
AUTO  
4.99k  
15nF  
PART  
RESTART  
3C4C  
DCIN  
INFET  
CLP  
V
LOGIC  
LTC4007-1  
LTC4007  
NO  
3.25V/3.173V  
2.5V/2.44V  
0.025Ω  
100k  
100k 100k  
CHEM  
LOBAT  
YES  
SYSTEM  
LOAD  
LOBAT  
I
I
LTC4007-1 CLN  
TGATE  
CL  
CL  
20µF  
ACP  
SHDN  
FAULT  
CHG  
ACP  
Q1  
10µH  
0.025Ω  
SHDN  
FAULT  
CHG  
BGATE  
PGND  
CSP  
Li-Ion  
BATTERY  
Q2  
20µF  
3.01k  
FLAG  
FLAG  
NTC  
BAT  
32.4k  
3.01k  
PROG  
ITH  
CHARGING  
CURRENT  
MONITOR  
R
T
THERMISTOR  
0.0047µF  
0.47µF  
GND  
6.04k  
0.12µF  
10k  
NTC  
Q1: Si4431BDY  
Q2: FDC645N  
TIMING RESISTOR  
(~2 HOURS)  
26.7k  
309k  
40071 TA01  
40071f  
1
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中文翻译

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