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參數(shù)資料
| 型號： | LTC4054 |
| 廠商： | Linear Technology Corporation |
| 元件分類： | 熱敏電阻 |
| 英文描述： | Standalone Linear Li-lon Battery Charger with Thermistor Input |
| 中文描述： | 獨立線性鋰離子電池充電器熱敏電阻輸入 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 191K |
| 代理商： | LTC4054 |
1
LTC4054L-4.2
4054l42f
150mA Standalone Linear
Li-Ion Battery Charger in ThinSOT
DESCRIPTIOU
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
*U.S. Patent No. 6,522,118
I
Programmable Charge Current Range:
10mA to 150mA
I
No External MOSFET, Sense Resistor or Blocking
Diode Required
I
Complete Linear Charger in ThinSOT
TM
Package for
Single Cell/Coin Cell Lithium-Ion Batteries
I
Constant-Current/Constant-Voltage Operation with
Thermal Regulation* to Maximize Charge Rate
Without Risk of Overheating
I
Charges Single Cell Li-Ion Batteries Directly
from USB Port
I
Preset 4.2V Charge Voltage with
±
1% Accuracy
I
Charge Current Monitor Output for Gas Gauging*
I
Automatic Recharge
I
Charge Status Output Pin
I
C/10 Charge Termination
I
25
μ
A Max Supply Current in Shutdown Mode
I
2.9V Trickle Charge Threshold
I
Soft-Start Limits Inrush Current
I
Available in a 6-Lead Low Profile (1mm)
SOT-23 Package
APPLICATIU
I
Charger for Li-Ion Coin Cell Batteries
I
Portable MP3 Players, Wireless Headsets
I
Bluetooth Applications
I
Multifunction Wristwatches
The LTC
4054L is a complete, constant-current/constant-
voltage linear charger for single cell lithium-ion batteries.
Its small size and ability to regulate low charge currents
make the LTC4054L especially well-suited for portable
applications using low capacity rechargeable lithium-ion
coin cells. Furthermore, the LTC4054L is specifically de-
signed to work within USB power specifications.
No external sense resistor is needed, and no blocking di-
ode is required due to the internal MOSFET architecture.
Thermal feedback regulates the charge current to eliminate
thermal overdesign. The charge voltage is fixed at 4.2V, and
the charge current can be programmed externally with a
single resistor. The LTC4054L automatically terminates a
charge cycle when the charge current drops to 1/10th the
programmed value after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is
removed, the LTC4054L automatically enters a low cur-
rent state, dropping the battery drain current to less than
2
μ
A. The LTC4054L can be put into shutdown mode, re-
ducing the supply current to 25
μ
A.
Other features include charge current monitor, undervoltage
lockout, automatic recharge and a status pin to indicate
charge termination and the presence of an input voltage.
V
CC
1.69k
4.2V
COIN CELL
Li-Ion
BATTERY
4054l42 TA01
LTC4054L-4.2
1
μ
F
V
4.5V TO 6.5V
BAT
4
3
90mA
5
2
PROG
GND
90mA Li-Ion Single Coin Cell Charger
TIME (HOURS)
0
C
100
90
80
70
60
50
40
30
20
10
0
B
4.4
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.6
3.5
3.4
0.5
1.0 1.25
2.25
4054l42 TA01b
0.25
0.75
1.5 1.75 2.0
CONSTANT
CURRENT
CONSTANT
VOLTAGE
V
CC
= 5V
θ
JA
= 130
°
C/W
R
PROG
= 1.69k
T
A
°
C
Complete Charge Cycle (130mAh Battery)
FEATURES
TYPICAL APPLICATIO
U
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4054-4.2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT |
| LTC4054ES5-4.2 | 制造商:Linear Technology 功能描述:Constant Current/Voltage Charger Li-Ion 500mA 4.2V 5-Pin TSOT-23 |
| LTC4054ES54.2#PBF | 制造商:Linear Technology 功能描述: |
| LTC4054ES5-4.2#PBF | 制造商:Linear Technology 功能描述:Constant Current/Voltage Charger Li-Ion 500mA 4.2V 5-Pin TSOT-23 制造商:Linear Technology 功能描述:Constant Current/Voltage Charger Li-Ion 500mA 4.2V 5-Pin TSOT-23 Bulk |
| LTC4054ES5-4.2#TR | 功能描述:IC CHARGR BATTERY L-ION TSOT23-5 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(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 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
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