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| 型号： | LTC4052EMS8E-4.2#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | Lithium-Ion Battery Pulse Charger with Overcurrent Protection; Package: MSOP; No of Pins: 8; Temperature Range: -40°C to +125°C |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封装： | PLASTIC, MSOP-8 |
| 文件页数： | 1/12页 |
| 文件大小： | 165K |
| 代理商： | LTC4052EMS8E-4.2#TRPBF |
LTC4052-4.2
1
405242f
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
Lithium-Ion Battery
Pulse Charger with
Overcurrent Protection
Single Cell 4.2V, 1A, Standalone Li-Ion Battery Charger
The LTC
4052 is a complete standalone pulse charger
with integrated MOSFET for 1-cell lithium-ion batteries.
An external sense resistor provides overcurrent 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 terminates 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 wall adapter current. Removing the input
voltage puts the LTC4052 into a sleep mode, dropping the
battery current drain to less than 1
A.
The LTC4052 is available in a tiny 8-pin thermally
enhanced MSOP package.
s
Handheld Computers
s
Cellular Telephones
s
Cradle Chargers
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
Very Low Power Dissipation: 350mW at 1A
s
Complete Standalone Pulse Charger for 1-Cell
Lithium-Ion Batteries
s
Requires No Microcontroller, MOSFET or
Blocking Diode
s
Sense Resistor Limits Maximum Current for Safety
s
Programmable Charge Termination Timer for
Maximum Capacity Charging
s
±1% Float Voltage Accuracy
s
Near End-of-Charge (C/10) Detection Output
s
AC Wall Adapter Present Output
s
Low Battery Drain when Input Supply Is Removed
s
Automatic Trickle Charge for Low Battery
s
Automatic Battery Refresh
s
Thermal Shutdown Protection
s
Tiny Thermally Enhanced MSOP Package
1k
10k
4.7
RSENSE
0.05
1-CELL 4.2V
Li-Ion
BATTERY
1k
CHRG
ACPR
GATE
BAT
TIMER
CTIMER
0.1
F
GND
VIN
LTC4052
SENSE
1
F
0.047
F
0.022
F
VIN = 4.5V TO 10V
WITH 1A
CURRENT LIMIT
CHARGE STATUS
4052 TA01
AC PRESENT
3
7
1
8
4
5
6
2
TIME (HOURS)
0
0.5
BATTERY
VOLTAGE
(V)
CHRG
(V)
CHARGE
CURRENT
(A)
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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| LTC4053EDD-4.2#PBF | USB Compatible Lithium-Ion Battery Charger with Thermal Regulation; Package: DFN; No of Pins: 10; Temperature Range: -40°C to +125°C |
| LTC4053EMSE-4.2#PBF | USB Compatible Lithium-Ion Battery Charger with Thermal Regulation; Package: MSOP; No of Pins: 10; Temperature Range: -40°C to +125°C |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4053 | 制造商:LINER 制造商全称:Linear Technology 功能描述:150mA Standalone Linear Li-Ion Battery Charger in ThinSOT |
| LTC4053-4.2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:USB Compatible Lithium-Ion Battery Charger with Thermal Regulation |
| LTC4053EDD-4.2 | 制造商:Linear Technology 功能描述:Battery Charger Li-Ion 500mA 4.2V 10-Pin DFN EP |
| LTC4053EDD-4.2#PBF | 功能描述:IC CHARGER BATTERY USB 10-DFN 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 |
| LTC4053EDD-4.2#TRPBF | 功能描述:IC CHARGER BATTERY USB 10-DFN 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 |
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