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參數(shù)資料
| 型號： | LTC4008EGN-1#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 4A, High Efficiency, Multi-Chemistry Battery Charger; Package: SSOP; No of Pins: 20; Temperature Range: -40°C to +125°C |
| 中文描述： | BATTERY CHARGE CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | 0.150 INCH, LEAD FREE, PLASTIC, SSOP-20 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 221K |
| 代理商： | LTC4008EGN-1#PBF |
LTC4008
1
4008fb
TYPICAL APPLICATION
DESCRIPTION
4A, High Efciency,
Multi-Chemistry Battery Charger
12.3V, 4A Li-Ion Charger
FEATURES
APPLICATIONS
n General Purpose Charger Controller
n High Conversion Efciency: Up to 96%
n Output Currents Exceeding 4A
n ±0.8% Voltage Accuracy
n AC Adapter Current Limiting Maximizes
Charge Rate*
n Thermistor Input for Temperature Qualied Charging
n Wide Input Voltage Range: 6V to 28V
n Wide Output Voltage: 3V to 28V
n 0.5V Dropout Voltage; Maximum Duty Cycle: 98%
n Programmable Charge Current: ±4% Accuracy
n Indicator Outputs for Charging, C/10 Current
Detection, AC Adapter Present, Input Current
Limiting and Faults
n Charging Current Monitor Output
n Available in a 20-Pin Narrow SSOP Package
n Notebook Computers
n Portable Instruments
n Battery Backup Systems
The LTC
4008 is a constant-current/constant-voltage
chargercontroller.ThePWMcontrollerusesasynchronous,
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
current limiting. The ICL pin indicates when the charging
current is being reduced by input current limiting so that
the charging algorithm can adapt.
BATMON
VFB
ICL
ACP/SHDN
FAULT
FLAG
NTC
RT
ITH
GND
ICL
ACP
FAULT
FLAG
DCIN
INFET
CLP
CLN
TGATE
BGATE
PGND
CSP
BAT
PROG
LTC4008
32.4k
0.47μF
THERMISTOR
10k
NTC
0.12μF
100k
140k*
15k*
6.04k
150k
VLOGIC
DCIN
0V TO 28V
0.1μF
INPUT SWITCH
0.1μF
Q1
Q2
20μF
10μH
4.99k
3.01k
0.025Ω
0.02Ω
20μF
SYSTEM
LOAD
Li-Ion
BATTERY
CHARGING
CURRENT
MONITOR
26.7k
Q1: Si4431BDY
Q2: FDC645N
0.0047μF
4008 TA01
NOTE: * 0.25% TOLERANCE
ALL OTHER RESISTORS ARE 1% TOLERANCE
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath and No RSENSE are trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U.S. Patents including
5723970.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4008EGNPBF | 制造商:Linear Technology 功能描述:4A, High Eff Li-Ion Charger LTC4008EGN |
| LTC4009 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Voltage High Current Controller for Battery Charging and Power Management |
| LTC4009-1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Effi ciency, Multi-Chemistry Battery Charger |
| LTC4009-2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Effi ciency, Multi-Chemistry Battery Charger |
| LTC4009CUF#PBF | 功能描述:IC CHARGER BATTERY MC 20-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 其它有關文件:STC3100 View All Specifications 特色產(chǎn)品:STC3100 - Battery Monitor IC 標準包裝:4,000 系列:- 功能:燃料，電量檢測計/監(jiān)控器 電池化學:鋰離子（Li-Ion） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
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