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PDF AAT3783 Data sheet ( 特性 )

部品番号 AAT3783
部品説明 1-A Linear Li-Ion/Polymer Battery Charger
メーカ Skyworks Solutions
ロゴ Skyworks Solutions ロゴ 

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DATA SHEET
AAT3783
1-A Linear Li-Ion/Polymer Battery Charger with 28V Over-Voltage Protection
General Description
The AAT3783 BatteryManager™ is a single-cell Lithium-
Ion (Li-Ion)/Li-Polymer battery charger IC, designed to
operate from USB ports, AC adapter inputs, or from a
charger adapter up to an input voltage of 6.5V. For
increased safety, the AAT3783 also includes over-voltage
input protection (OVP) up to 28V.
The AAT3783 precisely regulates battery charge voltage
and current for 4.2V Li-Ion/Polymer battery cells through
an extremely low RDS(ON) switch. When charged from an
adapter or a USB port, the battery charging current can
be set by an external resistor up to 1A. In the case of an
over-voltage condition in excess of 6.5V, a series switch
opens preventing damage to the battery and charging
circuitry. With the addition of an external resistor the
OVP trip point can be programmed to a level other than
the factory set value of 6.5V. In the case of an OVP con-
dition a fault flag is activated.
Battery charge state is continuously monitored for fault
conditions. In the event of an over-current, battery over-
voltage, short-circuit or over-temperature failure, the
device will automatically shut down, thus protecting the
charging device, control system and the battery under
charge. A status monitor output pin is provided to indi-
cate the battery charge status by directly driving an
external LED. An open-drain power-source detection
output (ADPP) is provided to report the power supply
status.
The AAT3783 comes in a thermally enhanced, space-
saving, Pb-free 16-pin 3x4 mm TDFN package and is
specified for operation over the -40°C to +85°C tem-
perature range.
Features
• USB or AC Adapter System Power Charger
• Programmable from 100mA to 1A Max
• 4.0V ~ 7.5V Input Voltage Range
Over-Voltage Input Protection up to 28V
• High Level of Integration with Internal:
Charging Device
Reverse Blocking Diode
Current Sensing
• Digital Thermal Regulation
• Charge Current Programming (ISET)
• Charge Termination Current Programming (TERM)
• Charge Timer (CT)
• Battery Temperature Sensing (TS)
• TS Pin Open Detection
• Automatic Recharge Sequencing
• No Trickle Charge Option Available
• Full Battery Charge Auto Turn Off / Sleep State /
Charge Termination
• Automatic Trickle Charge for Battery Pre-conditioning
• Battery Over-Voltage and Over-Current Protection
• Emergency Thermal Protection
• Power On Reset
• 16-pin 3x4mm TDFN Package
Applications
• Bluetooth™ Headsets, Headphones, Accessories
• Digital Still Cameras
• Mobile Phones
• MP3 Players
• Personal Data Assistants (PDAs)
• Other Li-Ion/Polymer Battery Powered Devices
Typical Application
VIN
2.2μF
Enable Charging
Enable OVP
IN BATS
IN BAT
FLT AAT3783
OVP
INCHR
TS
STAT
ADPP
ENCHR
CT
TERM
ISET
ENOVP GND
10μF
RSET
BATT+
BATT-
TEMP
Battery
Pack
RTERM
CT
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201903B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 27, 2012
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