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参数资料
| 型号： | LTC4008EGN |
| 厂商： | Linear Technology |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHARGER CTRLR 4A 20SSOP |
| 标准包装： | 55 |
| 功能： | 充电管理 |
| 电池化学： | 多化学 |
| 电源电压： | 6 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 管件 |
LTC4008
4A, High Ef?ciency,
Multi-Chemistry Battery Charger
FEATURES
DESCRIPTION
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General Purpose Charger Controller
High Conversion Ef?ciency: Up to 96%
Output Currents Exceeding 4A
±0.8% Voltage Accuracy
AC Adapter Current Limiting Maximizes
Charge Rate*
Thermistor Input for Temperature Quali?ed 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% Accuracy
Indicator Outputs for Charging, C/10 Current
Detection, AC Adapter Present, Input Current
Limiting and Faults
Charging Current Monitor Output
Available in a 20-Pin Narrow SSOP Package
The LTC ? 4008 is a constant-current/constant-voltage
charger controller. The PWM controller uses a synchronous,
quasi-constant frequency, constant off-time architecture
that will not generate audible noise even when using ceramic
capacitors. Charging current is programmable with a sense
resistor and programming resistor to ±4% typical accuracy.
Charging current can be monitored as a voltage across
the programming resistor. An external resistor divider and
precision internal reference set the ?nal ?oat voltage.
The LTC4008 includes a thermistor sensor input that will
suspend charging if an unsafe temperature condition is
detected and will automatically resume charging when bat-
tery temperature returns to within safe limits; a FAULT pin
indicates this condition. A FLAG pin indicates when charg-
ing current has decreased below 10% of the programmed
current. An external sense resistor programs AC adapter
Notebook Computers
Portable Instruments
Battery Backup Systems
APPLICATIONS
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TYPICAL APPLICATION
DCIN
0V TO 28V
140k*
current limiting. The I CL pin indicates when the charging
current is being reduced by input current limiting so that
the charging algorithm can adapt.
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath and No R SENSE are trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U.S. Patents including
5723970.
12.3V, 4A Li-Ion Charger
INPUT SWITCH
0.1μF
LTC4008
V LOGIC
BATMON
DCIN
I CL
ACP
100k
100k
V FB
I CL
ACP/ SHDN
INFET
CLP
CLN
0.1μF
4.99k
0.02Ω
20μF
SYSTEM
LOAD
FAULT
FAULT
TGATE
Q1
10μH
0.025Ω
FLAG
32.4k
FLAG
NTC
BGATE
PGND
Q2
20μF
Li-Ion
BATTERY
R T
CSP
THERMISTOR
10k
NTC
150k
15k*
6.04k
I TH
GND
BAT
PROG
3.01k
3.01k
CHARGING
CURRENT
0.47μF
0.12μF
0.0047μF
26.7k
Q1: Si4431BDY
Q2: FDC645N
MONITOR
NOTE: * 0.25% TOLERANCE
4008 TA01
ALL OTHER RESISTORS ARE 1% TOLERANCE
4008fb
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4008EGN#PBF | 功能描述:IC BATT CHARGER CTRLR 4A 20SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 其它有关文件:STC3100 View All Specifications 特色产品:STC3100 - Battery Monitor IC 标准包装:4,000 系列:- 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-MiniSO 包装:带卷 (TR) 其它名称:497-10526-2 |
| LTC4008EGN#TR | 功能描述:IC CTRLR CHARGR PWM CC/CV 20SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LTC4008EGN#TRPBF | 功能描述:IC BATT CHARGER CTRLR 4A 20SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LTC4008EGN-1 | 功能描述:IC BATT CHARGER CTRLR 4A 20SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LTC4008EGN-1#PBF | 功能描述:IC BATT CHARGER CTRLR 4A 20SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 其它有关文件:STC3100 View All Specifications 特色产品:STC3100 - Battery Monitor IC 标准包装:4,000 系列:- 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-MiniSO 包装:带卷 (TR) 其它名称:497-10526-2 |
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