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參數(shù)資料
| 型號： | LTC1730-4.2 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT01; No. of Contacts:5; Connector Shell Size:14; Connecting Termination:Solder; Circular Shell Style:Cable Receptacle; Body Style:Straight |
| 中文描述： | 1 A BATTERY CHARGE CONTROLLER, PDSO8 |
| 封裝： | SO-8 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 157K |
| 代理商： | LTC1730-4.2 |
LTC1730-4/LTC1730-4.2
Lithium-Ion Battery
Pulse Charger with
Overcurrent Protection
1
1730f
FEATURES
DESCRIPTIOU
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
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.
APPLICATIU
TYPICAL APPLICATIOU
I
Standalone Lithium-Ion Battery Charger
I
Handheld Computers
I
Cellular Telephones
I
Complete Pulse Charger for 1-Cell Lithium-Ion
Batteries
I
Sense Resistor Limits Maximum Current for Safety
I
1% Float Voltage Accuracy
I
End-of-Charge (C/10) Detection Output
I
Programmable Charge Termination Timer
I
Internal 0.35
NMOS Switch
I
No Blocking Diode Required
I
SEL Pin to Set Either 4.1V or 4.2V/Cell (LTC1730-4)
I
Low-Battery Drain (1
μ
A Max) when Input Supply Is
Removed
I
Battery Temperature Sensing and Charge
Qualification
I
Automatic Trickle Charge for Low-Battery
I
Automatic Battery Refresh
R1
1k
R2
10k
C3
0.047
μ
F
4.7
R
SENSE
0.05
1-CELL
Li-Ion
BATTERY
D3
R3
4.1k
CHRG
NTC/SHDN
GATE
BAT
TIMER
C
0.1
μ
F
GND
5
4
V
IN
2
LTC1730ES8-4.2
SENSE
C1
1
μ
F
0.022
μ
F
3
6
1
7
8
V
= 4.5V TO 12V
WITH 1A CURRENT LIMIT
CHARGE STATUS
1730 TA01
R4
10k
NTC*
T
*NTC: DALE NTHS-1206N02
1A, Single Cell 4.2V Li-Ion Battery Charger (8-Pin Package)
相關PDF資料 |
PDF描述 |
|---|---|
| LTC1730EGN-4 | Lithium-Ion Battery Pulse Charger with Overcurrent Protection |
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| LTC1733 | Monolithic Linear Lithium-Ion Battery Charger with Thermal Regulation |
| LTC1733EMSE | Monolithic Linear Lithium-Ion Battery Charger with Thermal Regulation |
| LTC1734 | Lithium-Ion Linear Battery Charger in SOT-23(鋰離子線性電池充電器（SOT-23封裝）) |
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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