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AAT3681A

Features: • USB or AC Adapter System Power Charger- Programmable from 15mA to 500mA• 4.0V ~ 7.5V Input Voltage Range• High Level of Integration with Internal:- Charging Device- Reverse Blocking Diode• Automatic Current Sensing• Automatic Recharge Sequencing• Ful...

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SeekIC No. : 004261191 Detail

AAT3681A: Features: • USB or AC Adapter System Power Charger- Programmable from 15mA to 500mA• 4.0V ~ 7.5V Input Voltage Range• High Level of Integration with Internal:- Charging Device- Rev...

AAT3681A Data Sheet

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Part Number:
AAT3681A
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• USB or AC Adapter System Power Charger
- Programmable from 15mA to 500mA
• 4.0V ~ 7.5V Input Voltage Range
• High Level of Integration with Internal:
- Charging Device
- Reverse Blocking Diode
• Automatic Current Sensing
• Automatic Recharge Sequencing
• Full Battery Charge Auto Turn Off/Sleep Mode/Charge Termination
• Shutdown Current <1A
• Automatic Trickle Charge for Battery Pre- Conditioning (AAT3681A-1 is No Trickle Charge Option)
• Over-Voltage and Emergency Thermal Protection
• Power On Reset and Soft Start
• LED Status Pin
• 8-Pin 2.0x2.1mm SC70JW Package




Application

• Bluetooth® Headsets
• DECT Headsets
• Digital Still Cameras
• MP3, Portable Music, and Portable Media Players
• Personal Data Assistants (PDAs)
• Wrist Watches
• Other Lithium-Ion/Polymer Battery-Powered Devices




Pinout

Connection Diagram




Specifications

Symbol Description Value Units
VP ADP Continuous -0.3 to 8.0 V
VN BAT, STAT, ISET, EN -0.3 to VP + 0.3 V
TJ Operating Junction Temperature Range -40 to 150
TLEAD Maximum Soldering Temperature (at Leads) 300





Description

The AAT3681A BatteryManager is an integrated single cell lithium-ion/polymer battery charger IC, designed to operate from a DC power source or USB port up to an input voltage of 7.5V. It requires just one external component.

The AAT3681A precisely regulates battery charge voltage and current for 4.2V (4.375V option) lithiumion/ polymer battery cells. When charged from an AC adapter or USB port, the battery charging current can be
set by an external resistor up to 500mA.

Battery charge state is continuously monitored for fault conditions. In the event of an over-voltage, short-circuit, or over-temperature failure, the AAT3681A 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 indicate the battery charge status by directly driving an external LED.

The AAT3681A is available in a Pb-free, thermally enhanced, space-saving 8-pin 2.0x2.1mm SC70JW package and is specified for operation over the -40 to +85 temperature range.






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