參數(shù)資料
型號(hào): AAT2554
廠(chǎng)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(yīng)用解決方案
文件頁(yè)數(shù): 16/33頁(yè)
文件大?。?/td> 877K
代理商: AAT2554
AAT2554
Total Power Solution for Portable Applications
16
2554.2007.01.1.2
Functional Block Diagram
Reverse Blocking
V
REF
Constant
Current
Over-
Temperature
Protection
Charge
Control
BAT
UVLO
Over-
Current
Protection
STAT
GND
+
+
-
ISET
ADP
EN_BAT
VINB
LX
Logic
DH
DL
+
-
FB
ENB
Err.
Amp.
OUTA
VINA
ENA
V
REF
V
REF
-
Functional Description
The AAT2554 is a high performance power man-
agement IC comprised of a lithium-ion/polymer
battery charger, a step-down converter, and a lin-
ear regulator. The linear regulator is designed for
high-speed turn-on and fast transient response,
and good power supply ripple rejection. The step-
down converter operates in both fixed and variable
frequency modes for high efficiency performance.
The switching frequency is 1.5MHz, minimizing
the size of the inductor. In light load conditions,
the device enters power-saving mode; the switch-
ing frequency is reduced and the converter con-
sumes 30μA of current, making it ideal for battery-
operated applications.
Battery Charger
The battery charger is designed for single-cell lithi-
um-ion/polymer batteries using a constant current
and constant voltage algorithm. The battery charg-
er operates from the adapter/USB input voltage
range from 4V to 6.5V. The adapter/USB charging
current level can be programmed up to 500mA for
rapid charging applications. A status monitor out-
put pin is provided to indicate the battery charge
state by directly driving one external LED. Internal
device temperature and charging state are fully
monitored for fault conditions. In the event of an
over-voltage or over-temperature failure, the
device will automatically shut down, protecting the
charging device, control system, and the battery
under charge. Other features include an integrat-
ed reverse blocking diode and sense resistor.
相關(guān)PDF資料
PDF描述
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
AAT2556 Battery Charger and Step-Down Converter for Portable Applications
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AAT2554IRN-CAP-T1 制造商:ANALOGICTECH 制造商全稱(chēng):Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications
AAT2554IRN-CAQ-T1 制造商:ANALOGICTECH 制造商全稱(chēng):Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications
AAT2554IRN-CAT-T1 制造商:ANALOGICTECH 制造商全稱(chēng):Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications
AAT2554IRN-CAW-T1 制造商:ANALOGICTECH 制造商全稱(chēng):Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications
AAT2556 制造商:AAT 制造商全稱(chēng):AAT 功能描述:Battery Charger and Step-Down Converter for Portable Applications