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參數(shù)資料
| 型號(hào)： | AAT3685IWP-4.2-1-T1 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | Lithium-Ion/Polymer Battery Charger |
| 中文描述： | 鋰離子電池充電器 |
| 文件頁(yè)數(shù)： | 10/23頁(yè) |
| 文件大小： | 557K |
| 代理商： | AAT3685IWP-4.2-1-T1 |
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Functional Block Diagram
Charge
Control
Current
Compare
Reverse Blocking
CV/
Precharge
ADP/USB
PWRSEL
SETH
SETL
Constant
Current
BAT
UVLO
Over-
Temperature
Protect
Charge
Status
STAT2
STAT1
TS
Window
Comparator
80
μ
A
Serial
Data
DATA
GND
Charge
Reduction
Loop
CHR
EN
IC enable
AAT3685
Lithium-Ion/Polymer Battery Charger
10
3685.2006.10.1.3
Functional Description
The AAT3685 is a highly integrated single cell lithi-
um-ion/polymer battery charger IC designed to
operate from adapter or USB port V
BUS
supplies,
while requiring a minimum number of external
components. The device precisely regulates bat-
tery charge voltage and current for 4.2V lithium-
ion/polymer battery cells.
The AAT3685 is specifically designed for being
powered from a USB port V
BUS
supply, but it can
also be powered from any input voltage source
capable supplying 4.5V to 5.5V for loads up to 1A.
The AAT3685 constant charge current can be
externally programmed for two levels, SETH and
SETL, for maximum constant current charge levels
up to 1A. The SETH/L mode has an automatic
Charge Reduction Loop control to allow users to
charge the battery with limited available current
from a port while maintaining the regulated port
voltage. This system assures the battery charge
function will not overload the port while charging if
other system demands also share power with the
respective port supply.
Status monitor output pins are provided to indicate
the battery charge status by directly driving two
external LEDs. A serial interface output is available
to report 14 various charge states to a system
microcontroller.
Battery temperature and charge state are fully
monitored for fault conditions. In the event of an
over-voltage or over-temperature failure, the
device will automatically shut down, thus protecting
the charging device, control system, and the bat-
tery under charge. In addition to internal charge
controller thermal protection, the AAT3685 also
provides a temperature sense feedback function
(TS pin) from the battery to shut down the device in
the event the battery exceeds its own thermal limit
during charging. All fault events are reported to the
user either by the simple status LEDs or via the
DATA pin function.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AAT3685IWP-4.2-T1 | Lithium-Ion/Polymer Battery Charger |
| AAT3686 | USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger |
| AAT3686IRN-4.2-T1 | USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger |
| AAT3686IXN-4.2-1-T1 | USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger |
| AAT3686IXN-4.2-T1 | USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT3686IXN-4.2-1-T1 | 制造商:Skyworks Solutions Inc 功能描述:AAT3686 Series 5.5 V USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger |
| AAT3686IXN-4.2-T1 | 功能描述:電池管理 USB Port/Adapter/ Polymer Battery Chrg 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 |
| AAT3687IWP-4.2-1-T1 | 制造商:Skyworks Solutions Inc 功能描述:POWER MANAGEMENT IC |
| AAT3687IWP-4.2-T1 | 制造商:Skyworks Solutions Inc 功能描述:POWER MANAGEMENT IC |
| AAT3688AIWP-4.2-DB1 | 制造商:Skyworks Solutions Inc 功能描述:AAT3688 Series USB Port Lithium-Ion/Polymer Battery Charger Evaluation Board |
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