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參數資料
| 型號： | MCP73827 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Single Cell Lithium-Ion Charge Management Controller with Mode Indicator and Charge Current Monitor(單室鋰粒子充電器) |
| 中文描述： | 單節鋰離子電池充電管理控制器模式指示燈和充電電流監視器（單室鋰粒子充電器） |
| 文件頁數： | 1/24頁 |
| 文件大?。?/td> | 555K |
| 代理商： | MCP73827 |
2002 Microchip Technology Inc.
DS21704A-page 1
M
MCP73827
Features
Linear Charge Management Controller for Single
Lithium-Ion Cells
High Accuracy Preset Voltage Regulation:
+ 1% (max)
Two Preset Voltage Regulation Options:
- 4.1V - MCP73827-4.1
- 4.2V - MCP73827-4.2
Programmable Charge Current
Automatic Cell Preconditioning of Deeply
Depleted Cells, Minimizing Heat Dissipation Dur-
ing Initial Charge Cycle
Charge Status Output for LED Drive or Microcon-
troller Interface
Charge Current Monitor Output
Automatic Power-Down when Input Power
Removed
Temperature Range: -20°C to +85°C
Packaging: 8-Pin MSOP
Applications
Single Cell Lithium-Ion Battery Chargers
Personal Data Assistants
Cellular Telephones
Hand Held Instruments
Cradle Chargers
Digital Cameras
Typical Application Circuit
Description
The MCP73827 is a linear charge management con-
troller for use in space-limited, cost sensitive applica-
tions. The MCP73827 combines high accuracy
constant voltage, controlled current regulation, cell pre-
conditioning, and charge status indication in a space
saving 8-pin MSOP package. The MCP73827 provides
a stand-alone charge management solution.
The MCP73827 charges the battery in three phases:
preconditioning, controlled current, and constant volt-
age. If the battery voltage is below the internal low-volt-
age threshold, the battery is preconditioned with a
foldback current. The preconditioning phase protects
the lithium-ion cell and minimizes heat dissipation.
Following the preconditioning phase, the MCP73827
enters the controlled current phase. The MCP73827
allows for design flexibility with a programmable charge
current set by an external sense resistor. The charge
current is ramped up, based on the cell voltage, from
the foldback current to the peak charge current estab-
lished by the sense resistor. This phase is maintained
until the battery reaches the charge-regulation voltage.
Then, the MCP73827 enters the final phase, constant
voltage. The accuracy of the voltage regulation is better
than +1% over the entire operating temperature range
and supply voltage range. The MCP73827-4.1 is preset
to
a
regulation
voltage
MCP73827-4.2 is preset to 4.2V. The charge status
output, MODE, indicates when the charge cycle has
transitioned to constant voltage mode. The charge
cycle can be terminated by a timer that is started when
the MODE pin goes to a logic High or by monitoring the
charge current monitor output, I
MON
, for a minimum
current.
of
4.1V,
while
the
The MCP73827 operates with an input voltage range
from 4.5V to 5.5V. The MCP73827 is fully specified
over the ambient temperature range of -20°C to +85°C.
Package Type
1
2
5
7
8
MCP73827
6
MODE
332
4
I
MON
3
+
-
GND
V
DRV
V
SNS
V
IN
V
BAT
SHDN
10 μF
100 k
100 m
V
IN
5V
Single
Lithium-Ion
Cell
NDS8434
MA2Q705
500 mA Lithium-Ion Battery Charger
10 μF
MSOP
V
DRV
V
SNS
V
IN
V
BAT
SHDN 1
2
3
4
8
7
MCP73827
5
6
MODE
I
MON
GND
Single Cell Lithium-Ion Charge Management Controller
with Mode Indicator and Charge Current Monitor
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MCP73827-4.1VUA | 功能描述:電池管理 W/ Charge Curnt Mon RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MCP73827-4.1VUATR | 功能描述:電池管理 W/ Charge Curnt Mon RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MCP73827-4.2VUA | 功能描述:電池管理 W/ Charge Curnt Mon RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MCP73827-4.2VUATR | 功能描述:電池管理 W/ Charge Curnt Mon RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MCP73828 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Single Cell Lithium-Ion Charge Management Controller with Charge Complete Indicator and Temperature Monitor |
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