参数资料
型号: LTC4002EDD-4.2#TRPBF
厂商: Linear Technology
文件页数: 1/16页
文件大小: 0K
描述: IC CHARGER BATTERY LI-ION 10-DFN
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: 4.7 V ~ 22 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘
供应商设备封装: 10-DFN(3x3)
包装: 带卷 (TR)
LTC4002
Standalone Li-Ion
Switch Mode Battery Charger
FEATURES
DESCRIPTIO
Wide Input Supply Range:
4.7V to 22V – 4.2 Version
8.9V to 22V – 8.4 Version
High Efficiency Current Mode PWM Controller with
500kHz Switching Frequency
± 1% Charge Voltage Accuracy
End-of-Charge Current Detection Output
3 Hour Charge Termination Timer
Constant Switching Frequency for Minimum Noise
± 5% Charge Current Accuracy
Low 10 μ A Reverse Battery Drain Current
Automatic Battery Recharge
Automatic Shutdown When Input Supply is Removed
Automatic Trickle Charging of Low Voltage Batteries
Battery Temperature Sensing and Charge
Qualification
Stable with Ceramic Output Capacitor
8-Lead SO and 10-Lead DFN Packages
The LTC ? 4002 is a complete battery charger controller for
one (4.2V) or two (8.4V) cell lithium-ion batteries. With a
500kHz  switching  frequency,  the  LTC4002  provides  a
small, simple and efficient solution to fast charge Li-Ion
batteries from a wide range of supply voltages. An external
sense resistor sets the charge current with ± 5% accuracy.
An internal resistor divider and precision reference set the
final float voltage to 4.2V per cell with ± 1% accuracy.
When the input supply is removed, the LTC4002 automati-
cally enters a low current sleep mode, dropping the battery
drain current to 10 μ A. An internal comparator detects the
near end-of-charge condition while an internal timer sets
the total charge time and terminates the charge cycle. After
the charge cycle ends, if the battery voltage drops below
4.05V per cell, a new charge cycle will automatically begin.
The LTC4002 is available in the 8-lead SO and 10-lead DFN
packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
All other trademarks are the property of their respective owners.
Portable Computers
Charging Docks
Handheld Instruments
TYPICAL APPLICATIO
1.5A Single Cell Li-Ion Battery Charger
Efficiency vs Input Voltage
V IN
5V TO 22V
100
(CURVES INCLUDE
INPUT DIODE)
90
BAT
0.1 μ F
V CC
GATE
10 μ F
80
V BAT = 4V
V BAT = 3.8V
2k
LTC4002ES8-4.2
CHARGE
STATUS
CHRG
SENSE
6.8 μ H
68m ?
70
COMP
BAT
60
5
10
15
20
25
0.47 μ F
2.2k
NTC
T
GND
10k
NTC
22 μ F
+
Li-Ion
BATTERY
4002 TA01
INPUT VOLTAGE (V)
4002 TA02
NTC: DALE NTHS-1206N02
4002f
1
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相关代理商/技术参数
参数描述
LTC4002EDD-8.4 功能描述:IC BATT CHARGER SW LI-ION 10DFN 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-8.4#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:- 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-8.4#TR 功能描述:IC BATT CHARGER SW LI-ION 10DFN 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-8.4#TRPBF 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:- 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
LTC4002ES8 制造商:LINER 制造商全称:Linear Technology 功能描述:Standalone Li-Ion Switch Mode Battery Charger