參數(shù)資料
型號(hào)： AAT2554
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(yīng)用解決方案
文件頁(yè)數(shù)： 1/33頁(yè)
文件大?。?/td> 877K
代理商： AAT2554
General Description
The AAT2554 is a fully integrated 500mA battery
charger, a 250mA step-down converter, and a
300mA low dropout (LDO) linear regulator. The
input voltage range is 4V to 6.5V for the battery
charger and 2.7V to 5.5V for the step-down con-
verter and linear regulator, making it ideal for
applications operating with single-cell lithium-
ion/polymer batteries.
The battery charger is a complete constant cur-
rent/constant voltage linear charger. It offers an
integrated pass device, reverse blocking protec-
tion, high accuracy current and voltage regulation,
charge status, and charge termination. The charg-
ing current is programmable via external resistor
from 15mA to 500mA. In addition to these stan-
dard features, the device offers over-voltage, cur-
rent limit, and thermal protection.
The step-down converter is a highly integrated
converter operating at a 1.5MHz switching fre-
quency, minimizing the size of external compo-
nents while keeping switching losses low. It has
independent input and enable pins. The output
voltage ranges from 0.6V to the input voltage.
The AAT2554 linear regulator is designed for fast
transient response and good power supply ripple
rejection. Designed for 300mA of load current,
it includes short-circuit protection and thermal
shutdown.
The AAT2554 is available in a Pb-free, thermally-
enhanced TDFN34-16 package and is rated over
the -40°C to +85°C temperature range.
Features
Battery Charger:
— Input Voltage Range: 4V to 6.5V
— Programmable Charging Current up to
500mA
— Highly Integrated Battery Charger
Charging Device
Reverse Blocking Diode
Step-Down Converter:
— Input Voltage Range: 2.7V to 5.5V
— Output Voltage Range: 0.6V to V
IN
— 250mA Output Current
— Up to 96% Efficiency
— 30μA Quiescent Current
— 1.5MHz Switching Frequency
— 100μs Start-Up Time
Linear Regulator:
— 300mA Output Current
— Low Dropout: 400mV at 300mA
— Fast Line and Load Transient Response
— High Accuracy: ±1.5%
— 70μA Quiescent Current
Short-Circuit, Over-Temperature, and Current
Limit Protection
TDFN34-16 Package
-40°C to +85°C Temperature Range
Applications
Bluetooth
Headsets
Cellular Phones
Handheld Instruments
MP3 and Portable Music Players
PDAs and Handheld Computers
Portable Media Players
AAT2554
Total Power Solution for Portable Applications
Typical Application
BATT-
ADP
GND
BAT
ISET
VINB
ENB
VINA
ENA
BATT+
AAT2554
Adapter/USB Input
STAT
EN_BAT
Enable
R
SET
C
Battery
Pack
OUT
S
L= 3.0μH
FB
OUTA
LX
R
FB2
R
FB1
C
OUTB
V
OUTB
C
OUTA
V
OUTA
2554.2007.01.1.2
1
SystemPower
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PDF描述
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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: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: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: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:Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications
AAT2556 制造商:AAT 制造商全稱:AAT 功能描述:Battery Charger and Step-Down Converter for Portable Applications
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