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參數(shù)資料
| 型號(hào)： | LTC4052-42 |
| 廠商： | Linear Integrated Systems |
| 英文描述： | Lithium-Ion Battery Pulse Charger with Overcurrent Protection |
| 中文描述： | 鋰離子電池脈沖充電器與過(guò)流保護(hù) |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大小： | 166K |
| 代理商： | LTC4052-42 |
LTC4052-4.2
1
405242i
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.
TYPICAL APPLICATIO
U
Lithium-Ion Battery
Pulse Charger with
Overcurrent Protection
July 2002
Final Electrical Specifications
Single Cell 4.2V, 1A, Standalone Li-Ion Battery Charger
FEATURES
APPLICATIU
The LTC
4052 is a complete standalone pulse charger
with integrated MOSFET for 1-cell lithium-ion batteries.
An external sense resistor provides maximum charge
current limiting 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, eliminating the need for a blocking diode.
As the battery accepts charge and approaches the
programmed float voltage, the internal MOSFET begins
switching off and on with the duty cycle gradually decreas-
ing as the battery approaches a fully charged condition.
A programmable timer ends the charge cycle. The near
end-of-charge
C
/10 condition is indicated at the CHRG pin
when the average charge current falls to one-tenth of the
wallpack current. Removing the input voltage puts the
LTC4052 into a sleep mode, dropping the battery current
drain to less than 1
μ
A (maximum).
The LTC4052 is available in a tiny 8-pin thermally
enhanced MSOP package.
I
Standalone Lithium-Ion Battery Charger
I
Personal Information Appliances
I
Cellular Telephones
I
Cradle Chargers
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
Complete Standalone Pulse Charger for 1-Cell
Lithium-Ion Batteries
I
Requires No Microcontroller
I
Internal 0.35
NMOS Switch
I
Sense Resistor Limits Maximum Current for Safety
I
Programmable Charge Termination Timer for
Maximum Capacity Charging
I
No Blocking Diode Required
I
1% Float Voltage Accuracy
I
Near End-of-Charge (C/10) Detection Output
I
Low Battery Drain when Input Supply Is Removed
I
Automatic Trickle Charge for Low Battery
I
Automatic Battery Refresh
I
Thermal Shutdown Protection
I
Small 8-Pin Thermally Enhanced MSOP Package
1k
10k
4.7
R
0.05
1-CELL 4.2V
Li-Ion
BATTERY
1k
CHRG
ACPR
GATE
BAT
TIMER
C
0.1
μ
F
GND
V
IN
LTC4052
SENSE
1
μ
F
0.047
μ
F
0.022
μ
F
V
IN
= 4.5V TO 10V
WITH 1A
CURRENT LIMIT
CHARGE STATUS
4052 TA01
AC PRESENT
DESCRIPTIOU
TIME (HOURS)
0
0.5
B
V
C
C
C
1.0
2.0
1.5
2.5
3.0
4052 TA01b
4.5
4.0
3.5
3.0
1.0
0.5
0
5
0
CONSTANT
CURRENT
PULSING
CURRENT
CHARGE
CYCLE
ENDS
C
/10
LTC4052 Charge Profile
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4052EMS8E-4.2 | 功能描述:IC CHARGER PULSE LI-ION 8-MSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):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(lèi)型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤(pán) 包裝:管件 |
| LTC4052EMS8E-4.2#PBF | 功能描述:IC CHARGER PULSE LI-ION 8-MSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電池管理 系列:- 其它有關(guān)文件:STC3100 View All Specifications 特色產(chǎn)品:STC3100 - Battery Monitor IC 標(biāo)準(zhǔn)包裝:4,000 系列:- 功能:燃料，電量檢測(cè)計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
| LTC4052EMS8E-4.2#TR | 功能描述:IC CHARGER PULSE LI-ION 8-MSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):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(lèi)型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤(pán) 包裝:管件 |
| LTC4052EMS8E-4.2#TRPBF | 功能描述:IC CHARGER PULSE LI-ION 8-MSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):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(lèi)型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤(pán) 包裝:管件 |
| LTC4053 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:150mA Standalone Linear Li-Ion Battery Charger in ThinSOT |
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