DataSheet.jp

CN3082 の電気的特性と機能

CN3082のメーカーはCONSONANCEです、この部品の機能は「Multi-Chemistry Battery Charger」です。


製品の詳細 ( Datasheet PDF )

部品番号 CN3082
部品説明 Multi-Chemistry Battery Charger
メーカ CONSONANCE
ロゴ CONSONANCE ロゴ 




このページの下部にプレビューとCN3082ダウンロード(pdfファイル)リンクがあります。
Total 12 pages

No Preview Available !

CN3082 Datasheet, CN3082 PDF,ピン配置, 機能
如韵电子 CONSONANCE
Multi-Chemistry Battery Charger for Solar-Powered Systems
CN3082
General Description:
CN3082 is a mutli-chemistry battery charge control
chips for single cell lithium batteries, lithium iron
phosphate and single or two to four nickel-metal
hydride batteries. The device contains an on-chip
power MOSFET and eliminates the need for the
external sense resistor and blocking diode. CN3082
is specifically designed to work within USB power
specifications. Thermal feedback regulates the
charge current to limit the die temperature during
high power operation or high ambient temperature.
Chip integrates a high-precision voltage comparator,
with 1% accuracy, you can accurately set the
constant current charge termination voltage. An
on-chip 8-bit ADC can adjust charging current
automatically based on the output capability of input
power supply, so CN3082 is ideally suited for solar
powered system.
The charge current can be programmed externally
with a single resistor. When the input supply is
removed, the CN3082 automatically enters a low
power sleep mode , dropping the battery drain
current to less than 3uA. Other features include
undervoltage lockout, automatic recharge, battery
temperature sensing and charging/termination
indicator.
The CN3082 is available in 8-pin SOP8 package.
Applications:
Cell Phone
Digital Camera
Electronic Dictionary
Portable Devices
The need for lithium batteries, nickel
metal hydride batteries, lithium iron
phosphate and lead-acid battery charging
Features:
Suitable for the USB port or AC adapter
On-chip Power MOSFET
Constant current charge voltage accuracy of
1%
On-chip 8-bit ADC can adjust charging current
automatically based on the output capability of
input power supply
Suitable for Solar-Powered System
Precharge Conditioning for Reviving Deeply
Discharged Cells and Minimizing Heat
Dissipation During Initial Stage of Charge
Continuous Programmable Charge Current Up
to 1000mA
Constant-Current/Constant-Temperature
Operation with Thermal Regulation to
Maximize Charge Rate Without Risk of
Overheating
Automatic Low-Power Sleep Mode When Input
Supply Voltage is Removed
Status Indication LED drive or MCU interface
Automatic Recharge
Battery Temperature Sensing
Available in SOP-8 Package
Pb-free Available
Pin Assignment
TEMP 1
ISET 2
GND 3
VIN 4
8 FB
CN3082
7 CHRG
6 IMIN
5 BAT
www.consonance-elec.com
REV 1.1
1

1 Page





CN3082 pdf, ピン配列
Block Diagram
Tdie
115 C
+
Tamp
-
ISET
+
Iamp
Iref -
IMIN
Current
Control
Termination
Comparator
Recharge
Comparator
TEMP
TEMP
Comparator
Precharge
Comparator
8-bit ADC
control
VIN
BAT
FB
CHRG
GND
Figure 2 Block Diagram
REV 1.1
3


3Pages


CN3082 電子部品, 半導体
TEMP input Current
Pin
Sink Current
Current
Leakage
ICHRG
TEMP to VIN or to GND
VCHRG0.3Vcharge status
VIN0VVCHRG6V
0.5 uA
10 mA
1 uA
Detailed Description
CN3082 is a mutli-chemistry battery charge control chips for single cell lithium batteries, lithium iron phosphate
and single or two to four nickel-metal hydride batteries. The device contains an on-chip power MOSFET and
eliminates the need for the external sense resistor and blocking diode. CN3082 is specifically designed to work
within USB power specifications. Continuous charge current can be programmed up to 600mA with an external
resistor.
The on-chip 8-bit ADC can adjust charging current automatically based on the output capability of input power
supply, so CN3082 is ideally suited for the solar-powered systems, or the applications that need to charge battery
with an input power supply whose output capability is limited.
The internal thermal regulation circuit reduces the programmed charge current if the die temperature attempts to
rise above a preset value of approximately 115. This feature protects the CN3082 from excessive temperature,
and allows the user to push the limits of the power handling capability of a given circuit board without risk of
damaging the CN3082 or the external components. Another benefit of adopting thermal regulation is that charge
current can be set according to typical, not worst-case, ambient temperatures for a given application with the
assurance that the charger will automatically reduce the current in worst-case conditions.
The charge cycle begins when the voltage at the VIN pin rises above the UVLO level, The
pin outputs a
logic low to indicate that the charge cycle is in precharge or constant current charge mode. At the beginning of
the charge cycle, if the voltage at FB pin is below 1.54V, the charger is in precharge mode and charging current
is set by constant current of 20% .The charger goes into the fast charge constant current mode once the voltage
on the FB pin rises above 1.54V and below 2.445V. In constant current mode, the charge current is set by RISET.
CN3082 goes into the Continuous charge mode once the voltage on the FB pin rises above 2.445V, the maintain
charging current is determined by the input voltage VIN, RISET and RIMIN(as finger 1),.
pin assumes a
high impedance state. In maintaining charge mode, when the battery voltage feedback input FB pin voltage
drops to 1.65V, CN3082 will begin a new charge cycle, into the pre-charge mode or constant-current charging
mode. Of course, the input voltage can also be off, then power on to start a new charge cycle. On-chip precision
voltage reference and comparator circuit to ensure constant current charge voltage accuracy within 1%, to meet a
variety of rechargeable batteries. When the input voltage is not present, the charger goes into a sleep mode,
dropping battery drain current to less than 3uA. This greatly reduces the current drain on the battery and
increases the standby time. The charging process shown in Figure 3:
REV 1.1
6

6 Page



ページ 合計 : 12 ページ
 
PDF
ダウンロード
[ CN3082 データシート.PDF ]


データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
CN3082

Multi-Chemistry Battery Charger

CONSONANCE
CONSONANCE


www.DataSheet.jp    |   2020   |  メール    |   最新    |   Sitemap