AAT3681AIJS-4.2-3-T1 AnalogicTech, AAT3681AIJS-4.2-3-T1 Datasheet

AAT3681AIJS-4.2-3-T1

Manufacturer Part Number

AAT3681AIJS-4.2-3-T1

Description

500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger: Trickle Charge: Yes; Enable: Active Low Active Low; Package: SC70JW-8

Manufacturer

AnalogicTech

Datasheet

1.AAT3681AIJS-4.2-3-T1.pdf (17 pages)

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General Description

The AAT3681A BatteryManager is an integrated single cell

lithium-ion/polymer battery charger IC, designed to oper-

ate 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 volt-

age and current for 4.2V (4.375V option) lithium-ion/

polymer battery cells. When charged from an AC adapt-

er 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 device will automati-

cally 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 pack-

age and is specified for operation over the -40°C to

+85°C temperature range.

Typical Application

3681A.2009.12.1.7

BatteryManager

Adapter/USB Input

Enable

500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger

SET

w w w . a n a l o g i c t e c h . c o m

ADP

STAT

ISET

AAT3681A-x

Features

• USB or AC Adapter System Power Charger

• 4.0V ~ 7.5V Input Voltage Range

• High Level of Integration with Internal:

• Automatic Current Sensing

• Automatic Recharge Sequencing

• Full Battery Charge Auto Turn Off/Sleep Mode/Charge

• Shutdown Current <1μA

• Automatic Trickle Charge for Battery Pre-Conditioning

• Over-Voltage and Emergency Thermal Protection

• Power On Reset and Soft Start

• LED Status Pin

• 8-Pin 2.0x2.1mm SC70JW Package

Applications

• Bluetooth

• 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

GND

BAT

▪

Constant Regulated Output Voltage:

▪

Termination

(AAT3681A-1/AAT3681A-4 is No Trickle Charge

Option)

Programmable from 15mA to 500mA

Charging Device

Reverse Blocking Diode

4.1 in AAT3681A-5

4.2 in AAT3681A-1/-2/-4

Headsets

BATT+

BATT-

PRODUCT DATASHEET

AAT3681A

Battery

Pack

Related parts for AAT3681AIJS-4.2-3-T1

AAT3681AIJS-4.2-3-T1 Summary of contents

Page 1

TM BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger General Description The AAT3681A BatteryManager is an integrated single cell lithium-ion/polymer battery charger IC, designed to oper- ate from a DC power source or USB port ...

Page 2

TM TM BatteryManager BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger Pin Description Pin # Symbol Type ISET In/Out 3 BAT In/Out 4 ADP Power ...

Page 3

TM TM BatteryManager BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger AAT3681A Feature Options Product Trickle Charge AAT3681A Yes AAT3681A-1 No AAT3681A-2 Yes AAT3681A-4 No AAT3681A-5 Yes Absolute Maximum ...

Page 4

TM TM BatteryManager BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger Electrical Characteristics -40°C to +85°C, unless otherwise noted. Typical values are T ADP ...

Page 5

TM TM BatteryManager BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger Typical Characteristics Constant Charging Current vs. Set Resistor Values 1000 100 100 R (kΩ ...

Page 6

TM TM BatteryManager BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger Typical Characteristics Charging Current vs. Battery Voltage (AAT3681A, AAT3681A-2, and AAT3681A-5 only) 600 R = 3.24kΩ SET 500 ...

Page 7

... Input Voltage (V) Preconditioning Threshold Voltage vs. Temperature = 8.06kΩ Ω ; AAT3681A, AAT3681A-2, (R SET and AAT3681A-5 Only) 3.03 3.02 3.01 3 2.99 2.98 2.97 -50 - Temperature (°C) Preconditioning Threshold Voltage vs. Temperature (AAT3681AIJS-4.1-T1 Only) 3.00 2.98 2.96 2.94 2.92 2.90 2.88 2.86 2.84 2.82 2.80 -40 - Temperature (° ° C) 3681A.2009.12.1.7 3681A.2009.12.1.7 550 500 450 400 350 300 7 7.5 -50 2 ...

Page 8

TM TM BatteryManager BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger Typical Characteristics Preconditioning Charge Current vs. Input Voltage (AAT3681A, AAT3681A-2, and AAT3681A-5 Only 5.36kΩ SET ...

Page 9

TM TM BatteryManager BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger Functional Block Diagram ADP ISET Charge STAT Status EN Functional Description The AAT3681A is a high performance battery ...

Page 10

TM BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger Preconditioning Trickle Charge Phase Charge Complete Voltage I = Max CC Regulated Current Constant Current Mode Voltage Threshold Trickle Charge and Termination Threshold Figure ...

Page 11

TM TM BatteryManager BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger System Operation Flow Chart No Shut Down No (AAT3681A-1, AAT3681A-4) No Recharge Test V > V RCH BAT ...

Page 12

TM BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger Application Information Adapter or USB Power Input Constant current charge levels up to 500mA may be programmed by the user when powered from a sufficient input power source. The ...

Page 13

TM BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger occurs, the AAT3681A charge control will shut down the device until the voltage on the BAT pin drops below V The AAT3681A will resume normal charging operation after the ...

Page 14

TM BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger Next, the power dissipation can be calculated by the fol- lowing equation [( · BAT CH Where ...

Page 15

... USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger Figure 5: AAT3681A Evaluation Board Top Side Layout. V IN(ADP) C1 10μF Figure 7: AAT3681A Evaluation Board Schematic Diagram. Component Part Number U1 AAT3681AIJS-T1 R1 Chip Resistor R8 Chip Resistor JP1 Chip Resistor C1 GRM21BR61A106KE19L C2 GRM21BR71A225KA01L JP2 ...

Page 16

... PRODUCT DATASHEET PRODUCT DATASHEET AAT3681A AAT3681A Part Number (Tape and Reel) AAT3681AIJS-4.1-T1 AAT3681AIJS-4.2-T1 AAT3681AIJS-4.2-1-T1 AAT3681AIJS-4.2-2-T1 AAT3681AIJS-4.2-4-T1 AAT3681AIJS-4.1-5-T1 0.048REF 4° ± 4° 2.10 ± 0.30 3681A.2009.12.1.7 3681A.2009.12.1.7 2 ...

Page 17

... AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights, or other intellectual property rights are implied. AnalogicTech reserves the right to make changes to their products or speciﬁ cations or to discontinue any product or service without notice. Except as provided in AnalogicTech’s terms and conditions of sale, AnalogicTech assumes no liability whatsoever, and AnalogicTech disclaims any express or implied warranty relating to the sale and/or use of AnalogicTech products including liability or warranties relating to ﬁ ...

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