AAT3684IOQ-4.2-1-T1 ANALOGICTECH [Advanced Analogic Technologies], AAT3684IOQ-4.2-1-T1 Datasheet

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AAT3684IOQ-4.2-1-T1

Manufacturer Part Number
AAT3684IOQ-4.2-1-T1
Description
500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger
Manufacturer
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet
1.AAT3684IOQ-4.2-1-T1.pdf (17 pages)
General Description
The AAT3684 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 6.5V. It requires just one external component.
The AAT3684 precisely regulates battery charge voltage
and current for 4.2V (4.375V option) lithium-ion/poly-
mer 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-cir-
cuit, or over-temperature failure, the device will auto-
matically 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 AAT3684 is available in a Pb-free, thermally
enhanced, space-saving 10-pin 2.2x2.2mm STDFN pack-
age and is specified for operation over the -40°C to
+85°C temperature range.
Typical Application
BatteryManager
3684.2007.12.1.2
Adapter/USB Input
TM
Enable
500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger
R
SET
w w w . a n a l o g i c t e c h . c o m
ADP
STAT
EN
ISET
AAT3684
Features
• USB or AC Adapter System Power Charger
• 4.0V ~ 6.5V 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
• STDFN2.2x2.2-10 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
▪
▪
▪
Termination
(AAT3684-1 is No Trickle Charge Option)
Programmable from 15mA to 500mA
Charging Device
Reverse Blocking Diode
®
Headsets
C
BATT+
BATT-
PRODUCT DATASHEET
Battery
Pack
AAT3684
1

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AAT3684IOQ-4.2-1-T1 Summary of contents

Page 1

TM BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger General Description The AAT3684 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 N/C 4 STAT Out 5 GND Power 6 ...

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 AAT3684 Feature Options Product Trickle Charge AAT3684 Yes AAT3684-1 No Absolute Maximum Ratings Symbol Description V ADP Continuous ...

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 (kΩ Ω ...

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 Operating Supply Current vs. Set Resistor 1000 2.85V BAT 100 ...

Page 7

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 Sleep Mode Current vs. Supply Voltage = 8.06kΩ Ω SET 800 700 85°C 600 ...

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 Functional Block Diagram ADP ISET Charge STAT Status EN Functional Description The AAT3684 is a high performance battery ...

Page 9

TM BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger Charge Complete Voltage Regulated Current Constant Current Mode Voltage Threshold Trickle Charge and Termination Threshold Figure 1: Current vs. Voltage Profile During Charging Phases. Battery Preconditioning Before the start ...

Page 10

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 (AAT3684-1) No Recharge Test V > V RCH BAT 10 ...

Page 11

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 12

TM BatteryManager 500mA USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger Over-Temperature Shutdown The AAT3684 has a thermal protection control circuit which will shut down charging functions should the inter- nal die temperature exceed the preset thermal limit threshold. Once ...

Page 13

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 CC Where ...

Page 14

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 Figure 5: AAT3684 Evaluation Board Top Layer Figure 6: AAT3684 Evaluation Board Figure 7: Exploded View ...

Page 15

... 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 VIN(ADP) C1 10μF Figure 8: AAT3684 Evaluation Board Schematic. Component Part Number U1 AAT3684IOQ-T1 R1 Chip Resistor R2 Chip Resistor C1 GRM21BR61A106KE19 C2 GRM188R60J475KE19 JP1, JP2 PRPN401PAEN LED1 CMD15-21SRC/TR8 Table 3: AAT3684 Evaluation Board Bill of Materials ...

Page 16

... Sample stock is generally held on part numbers listed in BOLD Marking Part Number (Tape and Reel) 1 TNXYY TXXYY PRODUCT DATASHEET PRODUCT DATASHEET AAT3684 AAT3684 2 AAT3684IOQ-4.2-T1 AAT3684IOQ-4.2-1-T1 3684.2007.12.1.2 3684.2007.12.1.2 ...

Page 17

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 Package Information 2.200 ± 0.050 Index Area Top View 0.025 ± 0.025 Side View All dimensions in millimeters. ...

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