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AAT - Lithium-Ion/Polymer Battery Charger

Numéro de référence AAT3687
Description Lithium-Ion/Polymer Battery Charger
Fabricant AAT 
Logo AAT 





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AAT3687 fiche technique
AAT3687
Lithium-Ion/Polymer Battery Charger
General Description
BatteryManager
Features
The AAT3687 BatteryManager is a highly integrat-
• Input Voltage Range: 4.0V to 5.5V
ed single-cell lithium-ion/polymer battery charger
• Up to 1.5A Charging Current
IC designed to operate with AC adapter inputs. It
• Adapter Present Indicator (ADPP#)
requires a minimum number of external compo-
• High Level of Integration with Internal:
nents. The AAT3687 precisely regulates battery
— Charging Device
charge voltage and current for 4.2V lithium-
— Reverse Blocking Diode
ion/polymer battery cells. Adapter charge current
— Current Sensing
rates can be programmed up to 1.5A. An active
• Active Thermal Loop Charge Reduction
thermal management system regulates the fast
• Automatic Recharge Sequencing
charge constant current for all ambient tempera-
• Battery Temperature Monitoring
ture and input vs. output voltage conditions.
• Full Battery Charge Auto Turn-Off / Sleep Mode
Battery temperature and charge state are fully
monitored for fault conditions. In the event of an
over-voltage or over-temperature failure, the
device will automatically shut down, thus protecting
the charging device, control system, and the bat-
tery under charge. Status monitor output pins are
• Over-Voltage, Over-Temperature, and
Emergency Thermal Protection
• Power On Reset and Soft Start
• Serial Interface Status Report
• 12-Pin 3x3mm TDFN Package
• -40°C to +85°C Temperature Range
provided to indicate the battery charge status by
directly driving two external LEDs. A serial interface
output is available to report 12 various charging
status states to a microcontroller.
Applications
www.DataSheet4U.com
The AAT3687 is available in a Pb-free, thermally-
enhanced, space-saving 12-pin TDFN 3x3mm
package and is rated over the -40°C to +85°C tem-
perature range.
Cellular Telephones
Digital Still Cameras
Hand Held PCs
MP3 Players
Personal Data Assistants (PDAs)
Other Lithium-Ion/Polymer Battery-Powered
Devices
Typical Application
Adapter
Present
Enable
Serial Interface
Adapter
CIN
10μF
RSET
LED1
ADPP#
BAT
EN
DATA
TS
AAT3687
CT
ADP
ADPSET
STAT1
GND
STAT2
RB1
RB2
CT
0.1μF
BATT+
COUT
10μF
BATT-
+
TEMP
Battery
Pack
LED2
3687.2006.10.1.7
1

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