AAT3686IXN-4.2-3-T1 ANALOGICTECH [Advanced Analogic Technologies], AAT3686IXN-4.2-3-T1 Datasheet

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AAT3686IXN-4.2-3-T1

Manufacturer Part Number
AAT3686IXN-4.2-3-T1
Description
USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger
Manufacturer
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet
1.AAT3686IXN-4.2-3-T1.pdf (23 pages)
General Description
The AAT3686 BatteryManager is a highly integrated sin-
gle-cell lithium-ion/polymer battery charger IC designed
to operate with USB port and AC adapter inputs. It
requires the minimum number of external components.
The AAT3686 precisely regulates battery charge voltage
and current for 4.2V lithium-ion/polymer battery cells.
Adapter charge current rates can be programmed up to
1.5A. In the absence of an adapter and with a USB port
connected, the battery can also be charged by USB power.
Depending on the USB port type, the AAT3686 charge
current can be programmed for two separate levels up to
500mA. An optional Charge Reduction Loop is also built in
to allow users to charge the battery with available current
from a USB port, while keeping the port voltage regulat-
ed. USB charging is disabled when an adapter is present.
Battery temperature and charge state are fully moni-
tored for fault conditions. In the event of an over-volt-
age or over-temperature failure, the device will auto-
matically shut down, thus protecting the charging device,
control system, and the battery under charge. Status
monitor output pins are provided to indicate the battery
charge status by directly driving two external LEDs. A
serial interface output is available to report 22 various
status states to a microcontroller.
The AAT3686 is available in a Pb-free, thermally-
enhanced,
TDFN44-16 (4x4mm) package and is rated over the
-40°C to +85°C temperature range.
Typical Application
BatteryManager
3686.2007.12.1.11
space-saving
USB Hi/Lo Select
TM
ADP Present
USB Input
ADP Input
Enable
TDFN34-16
USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger
R
SETH
(3x4mm)
w w w . a n a l o g i c t e c h . c o m
R
R
SET
SETL
USB
USBSEL
USBH
USBL
ADPP#
ADP
ADPSET
STAT1
AAT3686
or
EN
STAT2
DATA
GND
CHR
BAT
TS
CT
Features
• USB Port/AC Adapter System Power Charger
• 4.0V to 5.5V Input Voltage Range
• Adapter Present Indicator (ADPP# Pin)
• Adapter Presence Automatically Disables USB Charging
• High Level of Integration With Internal:
• Automatic Recharge Sequencing
• Digital Thermal Regulation in ADP Charge
• Charge Reduction Loop in USB Charge
• Battery Temperature Monitoring
• Full Battery Charge Auto Turn-Off
• Over-Voltage and Emergency Thermal Protection
• Power On Reset and Soft Start
• Serial Interface Status Reporting
• TDFN34-16 or TDFN44-16 Package
Applications
• Cellular Telephones
• Digital Still Cameras
• Hand-Held PCs
• MP3 Players
• Personal Data Assistants (PDAs)
• Other Lithium-Ion/Polymer Battery-Powered Devices
▪
▪
▪
▪
▪
USB: Programmable to 500mA for USB Hi/Lo
Adapter: Programmable to 1.5A Max
Charging Devices
Reverse Blocking Diodes
Current Sensing
C
T
C2
10µF
BATT+
BATT-
TEMP
PRODUCT DATASHEET
Serial Data
Battery Pack
AAT3686
1

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AAT3686IXN-4.2-3-T1 Summary of contents

Page 1

TM BatteryManager General Description The AAT3686 BatteryManager is a highly integrated sin- gle-cell lithium-ion/polymer battery charger IC designed to operate with USB port and AC adapter inputs. It requires the minimum number of external components. The AAT3686 precisely regulates battery ...

Page 2

TM TM BatteryManager BatteryManager Pin Descriptions Pin # (TDFN34-16/ TDFN44-16) Name Type 1 USB In 2 BAT In/Out 3 ADP In 4 GND Ground 5 CHR In/Out ADPP# Out 8 TS In/Out 9 DATA In/Out 10 ...

Page 3

TM TM BatteryManager BatteryManager AAT3686 Feature Options Product AAT3686 AAT3686-1 AAT3686-3 Absolute Maximum Ratings Symbol Description V USB, ADP Input Voltage, <30ms, Duty Cycle <10 USB, ADP Input Voltage, Continuous P V BAT, USBSEL, USBH, USBL, ADPSET, STAT1, ...

Page 4

TM TM BatteryManager BatteryManager Electrical Characteristics -40°C to +85°C, unless otherwise noted. Typical values are at T ADP A Symbol Description Operation USB, ADP USB Port or Adapter Voltage Range V Adapter Present Indicator Threshold ...

Page 5

TM TM BatteryManager BatteryManager Electrical Characteristics -40°C to +85°C, unless otherwise noted. Typical values are at T ADP A Symbol Description Logic Control / Protection V Input High Threshold USBSEL(H) V Input Low Threshold USBSEL(L) ...

Page 6

TM TM BatteryManager BatteryManager Typical Characteristics I vs. R FASTCHARGE SET 10000 1000 ADP USBL 100 USBH (kΩ) SET Recharge Voltage vs. Temperature 4.140 4.130 4.120 4.110 ADP 4.100 4.090 USBH 4.080 4.070 4.060 4.050 4.040 ...

Page 7

TM TM BatteryManager BatteryManager Typical Characteristics Fast Charge Current vs. Temperature (ADPSET = 8.0kΩ Ω ; USBH = 8.06kΩ) 1100 1080 1060 USBH 1040 1020 1000 980 ADP 960 940 920 900 -50 - Temperature (°C) Charging ...

Page 8

TM TM BatteryManager BatteryManager Typical Characteristics Fast Charge Current vs. Supply Voltage (USBL; USBL = 40.2kΩ Ω ) 120 V = 3.5V BAT 100 V = 3.3V BAT 3.9V 60 BAT 4.0 4.5 5.0 ...

Page 9

TM TM BatteryManager BatteryManager Typical Characteristics Adapter Mode Supply Current vs. ADPSET Resistor 0.80 0.70 0.60 Constant Current 0.50 0.40 0.30 Pre-Conditioning 0.20 0.10 0. 100 ADPSET Resistor (kΩ Ω ) Counter Timeout vs. Temperature (CT = 0.1µF) ...

Page 10

TM TM BatteryManager BatteryManager Functional Block Diagram USB USBSEL USBH USBL CHR ADPSET ADP ADPP# STAT1 STAT2 DATA EN Functional Description The AAT3686 is a highly integrated single-cell lithium- ion/polymer battery charger IC designed to operate with USB port and ...

Page 11

TM BatteryManager 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 of charging, the AAT3686 checks sev- eral conditions in ...

Page 12

TM TM BatteryManager BatteryManager System Operation Flow Chart Yes Output Output ADPP ADPP Power On Power On Reset Reset Fault Yes Conditions Monitor OV Yes Recharge Test No V > V RCH BAT 12 12 USB Port/AC Adapter ...

Page 13

TM BatteryManager Application Information AC Adapter / USB System Power Charging Adapter Mode In the adapter mode, constant current charge levels up to 1.5A can be programmed by the user. The AAT3686 system control will always select the adapter input ...

Page 14

TM BatteryManager ADP USBH I R (kΩ) R (kΩ) CC SET SET 50 N/A 86.6 75 N/A 57.6 100 84.5 42.2 200 43.2 21.0 300 28.0 13.7 400 21.0 10.2 500 16.9 8.06 600 13.3 6.65 700 11.5 5.62 800 ...

Page 15

TM BatteryManager is pulled to a voltage level above the V the USBH current level will be selected. Conversely, this pin should be pulled below V USBSEL(L) charge level. Typically, the two R SETH the USBH and USBL functions are ...

Page 16

TM BatteryManager charging. This is accomplished by monitoring the voltage at the TS pin. This system is intended to use negative temperature coefficient thermistors (NTC), which are typically integrated into the battery package. Most of the commonly used NTC thermistors ...

Page 17

TM BatteryManager Digital Charge Status Reporting The AAT3686 has a comprehensive digital data reporting system by use of the DATA pin feature. This function can provide detailed information regarding the status of the charging system. The DATA pin is a ...

Page 18

TM BatteryManager Data Timing The system microcontroller should assert an active low data request pulse for minimum duration of 200ns; this is specified by the SQ . Upon sensing the rising edge PULSE of the end of the data request ...

Page 19

TM BatteryManager Example: For an application where the fast charge current for the adapter mode is set to 1A 5.0V, and the worst ADP case battery voltage is 3.0V, what is the maximum ambi- ent temperature where the ...

Page 20

TM TM BatteryManager BatteryManager AAT3686 Evaluation Board Schematic Diagram Figure 5: AAT3686 Evaluation Board Component Side Layout. Figure 7: AAT3686 Evaluation Board Assembly Layout USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger w w ...

Page 21

... Phoenix Contact 277-1273-ND Hirose Electronic H2959CT-ND Co., Ltd. Murata 490-1717-1-ND Murata 478-1244-2-ND Chicago Miniature CMD15-21SRC/TR8 Lamp Chicago Miniature CMD15-21SRC/TR8 Lamp On Semi BAV74LT1 Sullins 6821-0-0001-00-00-08-0 Panasonic/ECG P10KJTR-ND Panasonic/ECG P9.76KHCT-ND Panasonic/ECG P42.2KHTR-ND Panasonic/ECG P1.5KCGCT-ND ITT Industries/ CKN9012-ND C&K Div AAT3686IRN-4.2 AnalogicTech AAT3686IXN-4 ...

Page 22

... PRODUCT DATASHEET PRODUCT DATASHEET AAT3686 AAT3686 2 AAT3686IRN-4.2-T1 AAT3686IXN-4.2-T1 AAT3686IXN-4.2-1-T1 AAT3686IXN-4.2-3-T1 Detail "A" 0.350 ± 0.100 C0.3 Detail "A" 3686.2007.12.1.11 3686.2007.12.1.11 ...

Page 23

TM TM BatteryManager BatteryManager Detail "A" 4.00 ± 0.05 Top View 7.5° ± 7.5° 0.05 ± 0.05 Side View All dimensions in millimeters. Advanced Analogic Technologies, Inc. 3230 Scott Boulevard, Santa Clara, CA 95054 Phone (408) 737-4600 Fax (408) 737-4611 ...

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