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| 型号： | LTC1730-4#TR |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A BATTERY CHARGE CONTROLLER, PDSO16 |
| 封装： | SSOP-16 |
| 文件页数： | 1/1页 |
| 文件大小： | 70K |
| 代理商： | LTC1730-4#TR |
LTC1730-4/LTC1730-4.2
1
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
The LTC
1730 is a complete pulse charger for 1-cell
lithium-ion batteries. In the fast charge mode, the internal
power FET turns on causing the input voltage to collapse
as the wall adapter goes into current limit, thus forcing the
power to be dissipated in the wall adapter and not in the IC.
As the battery becomes charged and approaches the
programmed voltage, the internal FET begins to pulse on
and off until the programmable timer expires. 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 drain current to less than 1
A (maximum).
An external sense resistor limits the maximum charge
current as a safety precaution against a user connecting a
wall adapter with the incorrect or no current limit. The
internal FET prevents reverse battery current from flowing
if the input voltage is shorted to ground, eliminating 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.
s
Complete Lithium-Ion Battery Charger
s
Personal Information Appliances
s
Cellular Telephones
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
Complete Pulse Charger for 1-Cell Lithium-Ion
Batteries
s
1% Float Voltage Accuracy
s
End-of-Charge (C/10) Detection Output
s
Programmable Charge Termination Timer
s
Internal 0.35
NMOS Switch
s
No Blocking Diode Required
s
Sense Resistor Limits Maximum Current for Safety
s
SEL Pin to Set Either 4.1V or 4.2V Per Cell
(LTC1730-4)
s
Low-Battery Drain when Input Supply Is Removed
s
Battery Temperature Sensing and Charge
Qualification
s
Automatic Trickle Charging for Low-Battery Cell
s
Automatic Battery Refresh
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
Lithium-Ion Battery
Pulse Charger
December 2000
Final Electrical Specifications
R1
1k
R2
10k
4.7
RSENSE
0.05
1-CELL
Li-Ion
BATTERY
D3
R3
4.1k
R4
10k
NTC*
*NTC: DALE NTHS-1206N02
CHRG
NTC
GATE
BAT
TIMER
CTIMER
0.1
F
GND
54
VCC
2
LTC1730ES8-4.2
SENSE
C1
1
F
C3
0.047
F
0.022
F
3
6
1
7
8
VIN = 4.5V TO 13.2V
WITH 1A CURRENT LIMIT
CHARGE STATUS
1730 TA01
Single Cell 4.2V Li-Ion Battery Charger
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1730EGN-4 | 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#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 |
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