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| 型号： | LTC4001EUF#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER LI-ION BUCK 16-QFN |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 4 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN（4x4） |
| 包装： | 带卷 (TR) |
LTC4001
2A Synchronous
Buck Li-Ion Charger
FEATURES
DESCRIPTIO
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Low Power Dissipation
2A Maximum Charge Current
No External MOSFETs, Sense Resistor or Blocking
Diode Required
Remote Sensing at Battery Terminals
Programmable Charge Termination Timer
Preset 4.2V Float Voltage with ± 0.5% Accuracy
Programmable Charge Current Detection/Termination
Automatic Recharge
Thermistor Input for Temperature Qualified Charging
Compatible with Current Limited Wall Adapters
Low Profile 16-Lead (4mm × 4mm) QFN Package
The LTC ? 4001 is a 2A Li-Ion battery charger intended for
5V wall adapters. It utilizes a 1.5MHz synchronous buck
converter topology to reduce power dissipation during
charging. Low power dissipation, an internal MOSFET and
sense resistor allow a physically small charger that can be
embedded in a wide range of handheld applications. The
LTC4001 includes complete charge termination circuitry,
automatic recharge and a ± 1% 4.2V float voltage. Input
short-circuit protection is included so no blocking diode is
required.
Battery charge current, charge timeout and end-of-charge
indication parameters are set with external components.
APPLICATIO S
Additional features include shorted cell detection, tempera-
ture qualified charging and overvoltage protection. The
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Handheld Battery-Powered Devices
Handheld Computers
Charging Docks and Cradles
Digital Cameras
Smart Phones
LTC4001 is available in a low profile (0.75mm) 16-lead
(4mm × 4mm) QFN package.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
2A Single Cell Li-Ion Battery Charger
1.5 μ H
Power Loss vs V BAT
Charging (PWM Mode)
V IN
4.5V TO 5.5V
10 μ F
V INSENSE
PV IN
SW
SENSE
BATSENS
BAT
10 μ F
+
4.2V
Li-Ion
1.25
1.00
PGND
CHRG
NTC
FAULT
LTC4001
0.75
0.50
EN
PROG IDET TIMER
SS GNDSENS
0.25
V IN = 5V
274 ?
0.22 μ F
0.1 μ F
0
3
2A CHARGER
3.25
3.5
3.75
4
4.25
4001 TA01a
V BAT (V)
4001 TA01b
4001f
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4002 | 制造商:LINER 制造商全称:Linear Technology 功能描述:PWM LED Driver and Boost, Flyback and SEPIC Controller |
| LTC4002-4.2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Standalone Li-Ion Switch Mode Battery Charger |
| LTC4002EDD | 制造商:LINER 制造商全称:Linear Technology 功能描述:Standalone Li-Ion Switch Mode Battery Charger |
| LTC4002EDD-4.2 | 功能描述:IC CHARGER BATTERY LI-ION 10-DFN RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4002EDD-4.2#PBF | 功能描述:IC CHARGER BATTERY LI-ION 10-DFN 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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