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参数资料
| 型号： | LTC4007EGN |
| 厂商： | Linear Technology |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHARGER CTRLR 4A 24SSOP |
| 标准包装： | 55 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 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： | 24-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-SSOP |
| 包装： | 管件 |
LTC4007
4A, High Ef?ciency,
Standalone Li-Ion Battery Charger
FEATURES
DESCRIPTION
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Complete Charger Controller for 3- or 4-Cell
Lithium-Ion Batteries
High Conversion Ef?ciency: 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 Quali?ed Charging
Wide Input Voltage Range: 6V 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, Low Battery, Input Current
Limiting and Faults
Charging Current Monitor Output
Available in a 24-Pin Narrow SSOP Package
The LTC ? 4007 is a complete 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 capacitors.
Charging current is programmable to ±4% accuracy using
a programming resistor. Charging current can also be
monitored as a voltage across the programming resistor.
The output ?oat 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 charge
termination time. Charging is automatically restarted when
cell voltage falls below 3.9V/cell.
LTC4007 includes a thermistor input, which suspends
charging if an unsafe temperature condition is detected.
Notebook Computers
Portable Instruments
Battery-Backup Systems
Standalone Li-Ion Chargers
APPLICATIONS
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If the cell voltage is less than 2.5V, a low-battery indicator
asserts and can be used to program a trickle charge current
to safely charge depleted batteries. The FAULT pin is also
asserted and charging terminates if the low-battery con-
dition persists for more than 1/4 of the total charge time.
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 5723970.
TYPICAL APPLICATION
12.6V, 4A Li-Ion Battery Charger
DCIN
0V TO 28V
INPUT SWITCH
0.1μF
V LOGIC
3C4C
DCIN
4.99k
LOBAT
100k
100k
100k
CHEM
LOBAT
INFET
CLP
15nF
0.025Ω
SYSTEM
I CL
I CL
LTC4007 CLN
20μF
LOAD
ACP
ACP
TGATE
Q1
10μH
0.025Ω
SHDN
FAULT
SHDN
FAULT
BGATE
PGND
Q2
20μF
Li-Ion
BATTERY
CHG
CHG
CSP
FLAG
32.4k
FLAG
NTC
BAT
PROG
3.01k
3.01k
CHARGING
THERMISTOR
10k
NTC
0.47μF
309k
R T
TIMING RESISTOR
(~2 HOURS)
ITH
GND
6.04k
0.12μF
0.0047μF
26.7k
Q1: Si4431DY
Q2: FDC6459
CURRENT
MONITOR
4007 TA01
4007fc
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4007EGN#PBF | 功能描述:IC BATT CHARGER CTRLR 4A 24SSOP 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 |
| LTC4007EGN#TR | 功能描述:IC CHARGER BATTERY 4A 24-SSOP 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) |
| LTC4007EGN#TRPBF | 功能描述:IC BATT CHARGER CTRLR 4A 24SSOP 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) |
| LTC4007EUFD-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:4A, High Efficiency, Li-Ion Battery Charger |
| LTC4007EUFD-1#PBF | 功能描述:IC CHARGER BATTERY 4A 24-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) |
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