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AAT3682_06 Datasheet

  • AAT3682_06

  • Lithium-Ion/Polymer Linear Battery Charger

  • 368.96KB

  • 18頁

  • ANALOGICTECH

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Lithium-Ion/Polymer Linear Battery Charger
General Description
The AAT3682 is a lithium-ion/polymer linear battery
charger. It is designed for compact portable appli-
cations with a single-cell battery. The AAT3682 pre-
cisely regulates battery charge voltage and charge
current, and offers an integrated pass device, mini-
mizing the number of external components required.
The AAT3682 charges the battery in three different
phases: preconditioning, constant current, and con-
stant voltage. In preconditioning mode, the charge
current has two different levels and is controlled by
one external pin. Battery charge temperature and
charge state are carefully monitored for fault condi-
tions. A battery charge stable monitor output pin is
provided to indicate the battery charge status
through a display LED or interface to a system con-
troller. The AAT3682 has a sleep mode option for
when the input supply is removed. In this mode, it
draws only 2.0碌A(chǔ) of typical current.
The AAT3682 is available in a Pb-free, 16-pin
QFN44 package and is specified over the -20擄C to
+70擄C temperature range.
AAT3682
Features
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BatteryManager
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V
IN
Range: 4.7V to 6.0V
Low Quiescent Current, Typically 0.5mA
1% Accurate Preset Voltage
Up to 1A of Charging Current
Integrated Pass Device
Battery Temperature Monitoring
Fast Trickle Charge Option
Deep Discharge Cell Conditioning
LED Charge Status Output or System
Microcontroller Serial Interface
Power-On Reset
Lower Power Sleep Mode
Status Outputs for LED or System Interface
Indicates Charge and Fault Conditions
Temperature Range: -20擄C to +70擄C
16-Pin QFN44 Package
Applications
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Cellular Telephones
Digital Still Cameras
Hand-Held PCs
MP3 Players
Personal Data Assistants (PDAs)
Typical Application
Adapter
R
SENSE
R
3
VP
Gate
R
4
BAT
T2X
VP
BATT+
C
OUT
= 1渭F
DRV
CSI
VCC
C
IN
= 10渭F
BSENSE
R
T1
BATT-
TS
STAT
VSS
LED 1
TEMP
R
2
= 1K
R
T2
3682.2006.12.1.3
1

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