参数资料
型号: LTC1730EGN-4
厂商: Linear Technology
文件页数: 1/12页
文件大小: 0K
描述: IC BATT PULSE CHRGR LI-ION16SSOP
标准包装: 100
功能: 充电管理
电池化学: 锂离子(Li-Ion)
电源电压: 4.5 V ~ 12 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-SSOP
包装: 管件
LTC1730-4/LTC1730-4.2
Lithium-Ion Battery
Pulse Charger with
Overcurrent Protection
FEATURES
DESCRIPTIO
s
s
s
s
s
s
s
s
s
s
s
s
Complete Pulse Charger for 1-Cell Lithium-Ion
Batteries
Sense Resistor Limits Maximum Current for Safety
1% Float Voltage Accuracy
End-of-Charge (C/10) Detection Output
Programmable Charge Termination Timer
Internal 0.35 ? NMOS Switch
No Blocking Diode Required
SEL Pin to Set Either 4.1V or 4.2V/Cell (LTC1730-4)
Low-Battery Drain (1 μ A Max) when Input Supply Is
Removed
Battery Temperature Sensing and Charge
Qualification
Automatic Trickle Charge for Low-Battery
Automatic Battery Refresh
The LTC ? 1730 is a complete pulse charger for 1-cell
lithium-ion batteries. When charging a depleted cell, the
internal MOSFET is fully on allowing the current limited
input power source to provide charge current to the
battery, virtually eliminating heat generation in the charger.
As the battery accepts charge and approaches the pro-
grammed voltage, the internal MOSFET begins switching
off and on with the duty cycle gradually decreasing as the
battery approaches a fully charged condition. A program-
mable timer ends the charge cycle. The end-of-charge
condition is indicated at the CHRG pin when the average
charge current falls to C /10. Removing the input voltage
puts the LTC1730 into a sleep mode, dropping the battery
current drain to less than 1 μ A (maximum).
An external sense resistor limits the maximum charge
current as a safety precaution against a user connecting a
Standalone Lithium-Ion Battery Charger
Handheld Computers
Cellular Telephones
APPLICATIO  S
s
s
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wall adapter with the incorrect or no current limit. The
internal MOSFET prevents reverse battery current from
flowing if the input voltage is shorted to ground, eliminat-
ing the need for a blocking diode.
The LTC1730-4 is available in the 16-pin SSOP package
and the LTC1730-4.2 is available in the 8-pin SO package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
1A, Single Cell 4.2V Li-Ion Battery Charger (8-Pin Package)
V IN = 4.5V TO 12V
WITH 1A CURRENT LIMIT
R3
4.1k
R1
1k
D3
2
V CC
LTC1730ES8-4.2
R2
10k
C3
0.047 μ F
R SENSE
0.05 ?
4.7 ?
C1
1 μ F
CHARGE STATUS
3
CHRG
GATE
SENSE
7
1
0.022 μ F
T
R4
10k
NTC*
6
NTC/SHDN
TIMER
BAT
GND
8
1-CELL
Li-Ion
BATTERY
*NTC: DALE NTHS-1206N02
C TIMER
0.1 μ F
5
4
1730 TA01
sn1730 1730fs
1
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参数描述
LTC1730EGN-4#PBF 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP 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
LTC1730EGN-4#TR 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP 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
LTC1730EGN-4#TRPBF 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP 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
LTC1730ES8-4.2 功能描述:IC BATT PULSE CHRGR LI-ION 8SOIC 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
LTC1730ES8-4.2#PBF 功能描述:IC BATT PULSE CHRGR LI-ION 8SOIC 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