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參數(shù)資料
| 型號： | LTC1730-4.2#TR |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A BATTERY CHARGE CONTROLLER, PDSO8 |
| 封裝： | SO-8 |
| 文件頁數(shù)： | 1/1頁 |
| 文件大?。?/td> | 70K |
| 代理商： | LTC1730-4.2#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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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1730EGN-4 | 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標準包裝:61 系列:- 功能:電源管理 電池化學:鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應商設備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC1730EGN-4#PBF | 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標準包裝:61 系列:- 功能:電源管理 電池化學:鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應商設備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC1730EGN-4#TR | 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標準包裝:61 系列:- 功能:電源管理 電池化學:鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應商設備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC1730EGN-4#TRPBF | 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標準包裝:61 系列:- 功能:電源管理 電池化學:鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應商設備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC1730ES8-4.2 | 功能描述:IC BATT PULSE CHRGR LI-ION 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標準包裝:61 系列:- 功能:電源管理 電池化學:鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應商設備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
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