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參數(shù)資料
| 型號： | AAT2550 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | Total Power Solution for Portable Applications |
| 中文描述： | 總功率便攜式應用解決方案 |
| 文件頁數(shù)： | 1/35頁 |
| 文件大?。?/td> | 914K |
| 代理商： | AAT2550 |
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General Description
The AAT2550 is a fully integrated total power solu-
tion with two step-down converters plus a single-
cell lithium-ion / polymer battery charger. The step-
down converter input voltage range spans 2.7V to
5.5V, making the AAT2550 ideal for systems pow-
ered by single-cell lithium-ion/polymer batteries.
The battery charger is a complete constant current/
constant voltage linear charger. It offers an inte-
grated pass device, reverse blocking protection,
high current accuracy and voltage regulation,
charge status, and charge termination. The charg-
ing current is programmable via external resistor
from 100mA to 1A. In addition to these standard
features, the device offers over-voltage, over-cur-
rent, and thermal protection.
The two step-down converters are highly integrated,
operating at a switching frequency of 1.4MHz, mini-
mizing the size of external components while keep-
ing switching losses low. Each converter has inde-
pendent input, enable, and feedback pins. The out-
put voltage ranges from 0.6V to V
IN
. Each converter
is capable of delivering up to 600mAof load current.
The AAT2550 is available in a Pb-free, space-sav-
ing, thermally-enhanced QFN44-24 package and is
rated over the -40°C to +85°C temperature range.
Features
Two Step-Down Converters:
— 600mA Output Current per Converter
— V
IN
Range: 2.7V to 5.5V
— 1.4MHz Switching Frequency
— Low R
DS(ON)
0.4
Ω
Integrated Power
Switches
— Internal Soft Start
— 27μA Quiescent Current per Converter
Highly Integrated Battery Charger:
— Programmable Charging Current from
100mA to 1A
— Pass Device
— Reverse Blocking Diodes
— Current Sensing Resistor
— Digital Thermal Regulation
Short-Circuit, Over-Temperature, and Current
Limit Protection
QFN44-24 Package
-40°C to +85°C Temperature Range
Applications
Cellular Telephones
Digital Cameras
Handheld Instruments
MP3, Portable Music, and Portable Media
Players
PDAs and Handheld Computers
AAT2550
Total Power Solution for Portable Applications
Typical Application
AAT2550
Adapter
Serial Interface
STAT1
STAT2
ADPSET
DATA
ENBAT
INA
INB
Li-Ion Battery or
Adapter
BAT
TS
CT
Batt+
Batt-
Temp
Battery Pack
LXA
C
OUTA
FBA
V
OUTA
R
SET
LXB
C
OUTB
FBB
V
OUTB
ENA
ENB
GND
ADP
2550.2006.07.1.0
1
SystemPower
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|---|---|
| AAT2554 | Total Power Solution for Portable Applications |
| AAT2554IRN-CAP-T1 | Total Power Solution for Portable Applications |
| AAT2554IRN-CAQ-T1 | Total Power Solution for Portable Applications |
| AAT2554IRN-CAT-T1 | Total Power Solution for Portable Applications |
| AAT2554IRN-CAW-T1 | Total Power Solution for Portable Applications |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AAT2550_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications |
| AAT2550ISK-CAA-T1 | 制造商:Skyworks Solutions Inc 功能描述:Voltage Regulators - Switching Regulators 2 step-down conv + battery charger 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
| AAT2552 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications |
| AAT2552_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications |
| AAT2552IRN-CAE-T1 | 功能描述:電荷泵 Total Pwr Solution for Portable App RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
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