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AAT2552IRN-CAE-T1 Datasheet

  • AAT2552IRN-CAE-T1

  • Total Power Solution for Portable Applications

  • 33頁

  • ANALOGICTECH

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AAT2552
Total Power Solution for Portable Applications
General Description
The AAT2552 is a fully integrated 500mA battery
charger, a 300mA 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 appli-
cations operating with single-cell lithium-ion/poly-
mer 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 30mA 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. The out-
put voltage ranges from 0.6V to the input voltage.
The AAT2552 linear regulator is designed for high
speed turn-on and turn-off performance, fast tran-
sient response, and good power supply ripple
rejection. Delivering up to 300mA of load current,
it includes short-circuit protection and thermal
shutdown.
The AAT2552 is available in a Pb-free, thermally-
enhanced TDFN34-16 package and is rated over
the -40擄C to +85擄C temperature range.
Features
鈥?/div>
SystemPower
鈩?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Battery Charger:
鈥?Input Voltage Range: 4V to 6.5V
鈥?Programmable Charging Current up to
500mA
鈥?Highly Integrated Battery Charger
鈥?Charging Device
鈥?Reverse Blocking Diode
鈥?Current Sensing
Step-Down Converter:
鈥?Input Voltage Range: 2.7V to 5.5V
鈥?Output Voltage Range: 0.6V to V
IN
鈥?300mA Output Current
鈥?Up to 96% Efficiency
鈥?45碌A Quiescent Current
鈥?1.5MHz Switching Frequency
鈥?120碌s Start-Up Time
Linear Regulator:
鈥?300mA Output Current
鈥?Low Dropout: 400mV at 300mA
鈥?Fast Line and Load Transient Response
鈥?High Accuracy: 鹵1.5%
鈥?85碌A Quiescent Current
Short-Circuit, Over-Temperature, and Current
Limit Protection
TDFN34-16 Package
-40擄C to +85擄C Temperature Range
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Bluetooth
廬
Headsets
Cellular Phones
GPS
Handheld Instruments
MP3 and Portable Music Players
PDAs and Handheld Computers
Portable Media Players
Typical Application
Adapter/USB Input
Enable
V
OUTB
R
FBB1
C
OUTB
4.7渭F
R
FBB2
V
OUTA
R
FBA1
C
OUTA
R
FBA2
FBA
GND
FBB
OUTA
L1
LX
ADP
STAT
EN_BAT
INB
ENB
INA
ENA
AAT2552
MODE
BAT
ISET
System
BATT+
C
OUT
R
SET
Battery
Pack
BATT-
2552.2007.04.1.0
1

AAT2552IRN-CAE-T1 產品屬性

  • Skyworks

  • TDFN-16 EP

  • Reel

  • SMD/SMT

AAT2552IRN-CAE-T1相關型號PDF文件下載

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    廠商
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    Dual 400mA, 1MHz Step-Down DC-DC Converter
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  • 英文版
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