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| 型号： | LTC4009CUF-2#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/28页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHRGR MC HI-EFF 20-QFN |
| 标准包装： | 91 |
| 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： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN 裸露焊盘（4x4） |
| 包装： | 管件 |
| 产品目录页面： | 1341 (CN2011-ZH PDF) |
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LTC4009
LTC4009-1/LTC4009-2
FEATURES
DESCRIPTION
High Efficiency,
Multi-Chemistry
Battery Charger
General Purpose Battery Charger Controller
Efficient 550kHz Synchronous Buck PWM Topology
±0.5% Output Float Voltage Accuracy
Programmable Charge Current: 4% Accuracy
Programmable AC Adapter Current Limit:
No Audible Noise with Ceramic Capacitors
Wide Input Voltage Range: 6V to 28V
Wide Output Voltage Range: 2V to 28V
Indicator Outputs for AC Adapter Present, Charging,
Analog Charge Current Monitor
Micropower Shutdown
Thermally Enhanced 20-Pin 4mm × 4mm × 0.75mm
Notebook Computers
Portable Instruments
Battery Backup Systems
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3% Accuracy
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C/10 Current Detection and Input Current Limiting
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QFN Package
APPLICATIONS
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L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks
are the property of their respective owners. Protected by U.S. Patents including 5723970.
TYPICAL APPLICATION
The LTC ? 4009 is a constant-current/constant-voltage
battery charger controller. It uses a synchronous quasi-
constant frequency PWM control architecture that will
not generate audible noise with ceramic bulk capacitors.
Charge current is set by the combination of external
sense, input and programming resistors. With no built-in
termination, the LTC4009 family charges a wide range of
batteries under external control.
The LTC4009 features a fully adjustable output voltage, while
the LTC4009-1 and LTC4009-2 can be pin-programmed for
lithium-ion/polymer battery packs of 1-, 2-, 3- or 4-series
cells. The LTC4009-1 provides output voltage of 4.1V/cell,
and the LTC4009-2 is a 4.2V/cell version.
The device includes AC adapter input current limiting which
maximizes the charge rate for a fixed input power level. An
external sense resistor programs the input current limit, and
the ICL status pin indicates when the battery charge current
is being reduced as a result of AC adapter current limiting.
The CHRG status pin is active during all charging modes,
including special indication for low charge current.
FROM
ADAPTER
13V TO 20V
14.3k
1.5k
0.1μF
DCIN CLP
CLN
DCDIV BOOST
LTC4009
TGATE
0.1μF
33m
5.1k
0.1μF
20μF
POWER TO
SYSTEM
100
95
Efficiency at DCIN = 20V
EFFICIENCY
10000
CHRG
SW
90
TO/FROM
MCU
ACP
ICL
INTV DD
BGATE
2μF
6.8μH
85
P OWER LOS S
1000
CHARGE
CURRENT
MONITOR
4.7nF
6.04k
0.1μF
26.7k
SHDN
ITH
PROG
GND
CSP
CSN
BAT
FBDIV
V FB
301k
32.8k
3.01k
3.01k
20μF
+
33m
12.3V
Li-Ion
BATTERY
4009 TA01a
80
75
70
0
0.5
V OUT = 12.3V
R SENSE = 33m
R IN = 3.01k
R PROG = 26.7k
D IN = SSB44
L = IHLP-2525CZ 6.8μH
1.0 1.5 2.0 2.5 3.0
CHARGE CURRENT (A)
4009 TA01b
100
4009fd
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4009CUF-2-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Effi ciency, Multi-Chemistry Battery Charger |
| LTC4009CUF-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Effi ciency, Multi-Chemistry Battery Charger |
| LTC4009CUF-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Effi ciency, Multi-Chemistry Battery Charger |
| LTC4009IUF#PBF | 功能描述:IC CHARGER BATTERY MC 20-QFN 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) |
| LTC4009IUF#TRPBF | 功能描述:IC CTLR BATT CHARGER 20QFN 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) |
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