AAT3685IWP-4.2-T1 Analogic Tech, AAT3685IWP-4.2-T1 Datasheet

AAT3685IWP-4.2-T1

Manufacturer Part Number

AAT3685IWP-4.2-T1

Description

Battery Management Lithium-Ion/Polymer Battery Charger

Manufacturer

Analogic Tech

Datasheet

1.AAT3685IWP-4.2-T1.pdf (21 pages)

Specifications of AAT3685IWP-4.2-T1

Package / Case

TDFN33-12

Mounting Style

SMD/SMT

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

AAT3685IWP-4.2-T1

Manufacturer:

ANALOGIC

Quantity:

2 200

Company:

Meier Automation Equipment Co., Limited

Part Number:

AAT3685IWP-4.2-T1

Manufacturer:

ANALOGIC

Quantity:

20 000

Current page: 1 of 21
Download datasheet (384Kb)

General Description

The AAT3685 BatteryManager™ is a highly integrated

single cell lithium-ion/polymer battery charger IC designed

to operate with USB port or line adapter inputs. It

requires the minimum number of external components.

The AAT3685 precisely regulates battery charge voltage

and current for 4.2V lithium-ion/polymer battery cells.

Regardless of the type of input power source (USB or

adapter), the AAT3685 can be programmed for two

separate constant current charge levels up to 1A. An

optional Charge Reduction Loop is built in to allow users

to charge the battery with available current from the

charge supply, while keeping the port voltage regulated.

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 any one of

14 various status states to a microcontroller.

The AAT3685 is available in a Pb-free, thermally-enhanced,

space-saving 12-pin 3x3mm TDFN package and is rated

over the -40°C to +85°C temperature range.

Typical Application

BatteryManager

3685.2007.12.1.4

Adapter or USB Input

Input Hi/Lo Select

Enable

SETH

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

SETL

ADP/USB

PWRSEL

SETH

SETL

STAT1

AAT3685

Features

• Adapter or USB Charger

• 4.0V to 5.5V Input Voltage Range

• High Level of Integration With Internal:

• Automatic Recharge Sequencing

• Charge Reduction Loop

• Battery Temperature Monitoring

• Full Battery Charge Auto Turn-Off

• Over-Voltage Protection

• Emergency Thermal Protection

• Power On Reset and Soft Start

• Serial Interface Status Reporting

• 12-Pin 3x3mm TDFN Package

Applications

• Cellular Telephones

• Digital Still Cameras

• Hand-Held PCs

• MP3 Players

• Personal Data Assistants (PDAs)

• Other Lithium-Ion/Polymer Battery-Powered Devices

STAT2

DATA

▪

GND

CHR

BAT

Programmable up to 1A Max

Charging Device

Reverse Blocking Diode

Current Sensing

Lithium-Ion/Polymer Battery Charger

PRODUCT DATASHEET

10µF

BATT+

BATT-

TEMP

AAT3685

Serial Data

Battery Pack

Related parts for AAT3685IWP-4.2-T1

AAT3685IWP-4.2-T1 Summary of contents

Page 1

BatteryManager TM General Description The AAT3685 BatteryManager™ highly integrated single cell lithium-ion/polymer battery charger IC designed to operate with USB port or line adapter inputs. It requires the minimum number of external components. The AAT3685 precisely regulates battery ...

Page 2

BatteryManager BatteryManager TM TM Pin Descriptions Pin # Name Type Function 1 ADP/USB In Line adapter or USB power supply input. 2 BAT In/Out Battery charging and sensing. 3 GND Ground Ground connection. Resistor divider to set USB voltage regulation ...

Page 3

BatteryManager BatteryManager TM TM AAT3685 Feature Options Product Internal Pull-Up Resistor on EN Pin AAT3685 AAT3685-1 Absolute Maximum Ratings Symbol Description V ADP/USB Input Voltage, <30ms, Duty Cycle <10 ADP/USB Input Voltage, Continuous P V BAT, PWRSEL, SETH, ...

Page 4

BatteryManager BatteryManager TM TM Electrical Characteristics -40°C to +85°C, unless otherwise noted. Typical values are at T ADP A Symbol Description Operation ADP/USB Input Voltage Range V Under-Voltage Lockout UVLO Under-Voltage Lockout Hysteresis I Operating ...

Page 5

BatteryManager BatteryManager TM TM 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 PWRSEL(H) V Input Low Threshold PWRSEL(L) ...

Page 6

BatteryManager BatteryManager TM TM Typical Characteristics I vs. R FASTCHARGE SET 10000 1000 SETL 100 SETH 100 R (kΩ) SET Recharge Voltage vs. Temperature 4.140 4.130 4.120 4.110 4.100 4.090 4.080 4.070 4.060 4.050 4.040 -50 ...

Page 7

BatteryManager BatteryManager TM TM Typical Characteristics Fast Charge Current vs. Temperature (SETH; SETH = 3.83kΩ Ω ) 1100 1080 1060 1040 1020 1000 980 960 940 920 900 -50 - Temperature (°C) Charging Current vs. Battery Voltage ...

Page 8

BatteryManager BatteryManager TM TM Typical Characteristics V vs. Supply Voltage IH EN Pin (Rising) 1.4 1.3 1.2 -40°C +25°C 1.1 1.0 0.9 0.8 0.7 +85°C 0.6 0.5 0.4 4.2 4.4 4.6 4.8 5 5.2 5.4 Supply Voltage (V) V vs. ...

Page 9

BatteryManager BatteryManager TM TM Typical Characteristics Temperature Sense Output Current vs. Temperature -50 - Temperature (° ° C) 3685.2007.12.1.4 3685.2007.12.1.4 Lithium-Ion/Polymer Battery Charger Lithium-Ion/Polymer Battery Charger 75 100 ...

Page 10

BatteryManager BatteryManager TM TM Functional Block Diagram ADP/USB PWRSEL SETH SETL CHR STAT1 STAT2 DATA EN Functional Description The AAT3685 is a highly integrated single cell lithium- ion/polymer battery charger IC designed to operate from adapter or USB port V ...

Page 11

BatteryManager TM 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 AAT3685 checks sev- eral conditions in ...

Page 12

BatteryManager BatteryManager TM TM System Operation Flow Chart No Recharge Test V > V RCH BAT 12 12 Lithium-Ion/Polymer Battery Charger Lithium-Ion/Polymer Battery Charger Switch On UVLO Yes No Sleep V > V Mode P UVLO SETL Current Loop Power ...

Page 13

BatteryManager TM Application Information USB System Power Charging The USB charge mode provides two programmable fast charge levels for each, SETH and SETL. The SETH or SETL modes may be externally selected by the select pin (PWRSEL). ...

Page 14

BatteryManager TM within the operating voltage limits as specified in the Electrical Characteristics section of this datasheet. This makes the AAT3685 perfect for applications that only have one input path, but may access either a line adapt- er source or ...

Page 15

BatteryManager TM After the system recovers from a temperature fault, the device will resume charging operation. The AAT3685 checks battery temperature before starting the charge cycle, as well as during all stages of charging. This is accomplished by monitoring the ...

Page 16

BatteryManager TM N DATA Report Status 1 Chip Over-Temperature Shutdown 2 Battery Temperature Fault 3 Over-Voltage Turn Off 4 Not Used 5 Not Used 6 Not Used 7 Not Used 8 Not Used 9 Not Used 10 Not Used 11 ...

Page 17

BatteryManager TM Timing Diagram SQ SQ PULSE System Reset System Start CK T SYNC Data DATA(RPT) SYNC T > OFF DATA Thermal Considerations The AAT3685 is packaged in a Pb-free, 3x3mm TDFN package which can ...

Page 18

BatteryManager TM The maximum ambient temperature before the AAT3685 thermal limit protection will shut down charging can now be calculated using Equation 5: Eq 140° 50°C/W · 1.00375W 89.81°C Therefore, under the stated ...

Page 19

BatteryManager BatteryManager TM TM AAT3685 Evaluation Board Layout Figure 5: AAT3685 Evaluation Board Component Side Layout. AAT3685 Evaluation Board Schematic Diagram Mini-B GND ADP/USB 1 C2 TB1 10μF ADP/USB 1 2 GND BAT ...

Page 20

... Panasonic/ECG R7 0603 Panasonic/ECG R8 0603 Panasonic/ECG SW1 SWITCH ITT Industries/ C&K Div. U1 TDFN33-12 AnalogicTech PRODUCT DATASHEET PRODUCT DATASHEET AAT3685 AAT3685 Part Number Mill-Max 6821-0-0001-00-00-08-0 277-1274-ND 277-1273-ND H2959CT-ND Murata 490-1717-1-ND CMD15-21SRC/TR8 CMD15-21VGC/TR8 Sullins 6821-0-0001-00-00-08-0 P10KCFCT-ND P1.5KCGCT-ND P40.2KHTR-ND P8.06KHCT-ND CKN9012-ND AAT3685IWP 3685.2007.12.1.4 3685.2007.12.1.4 ...

Page 21

... Lithium-Ion/Polymer Battery Charger Part Number (Tape and Reel) 1 RNXYY TMXYY TDFN33-12 Detail "A" 1.70 ± 0.05 Bottom View 0.05 ± 0.05 Side View PRODUCT DATASHEET PRODUCT DATASHEET AAT3685 AAT3685 2 AAT3685IWP-4.2-T1 AAT3685IWP-4.2-1-T1 0.43 ± 0.05 0.1 REF C0.3 Pin 1 Indicator (optional) Detail "A" ...

Related keywords

AAT3685IWP-4.2-T1 datasheet
AAT3685IWP-4.2-T1 data sheet
AAT3685IWP-4.2-T1 pdf datasheet
AAT3685IWP-4.2-T1 component
AAT3685IWP-4.2-T1 part
AAT3685IWP-4.2-T1 distributor
AAT3685IWP-4.2-T1 RoHS
AAT3685IWP-4.2-T1 datasheet download