AAT3686IRN-4.2-T1 Advanced Analog Technology, Inc., AAT3686IRN-4.2-T1 Datasheet
AAT3686IRN-4.2-T1
Related parts for AAT3686IRN-4.2-T1
AAT3686IRN-4.2-T1 Summary of contents
Page 1
General Description The AAT3686 BatteryManager is a highly integrated single-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 ...
Page 2
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 STAT2 Out 11 STAT1 ...
Page 3
AAT3686 Feature Options Internal Pull-Up Product Resistor on EN Pin AAT3686 No AAT3686-1 Yes Absolute Maximum Ratings Symbol Description V USB, ADP Input Voltage, <30ms, Duty Cycle <10 USB, ADP Input Voltage, Continuous P BAT, USBSEL, USBH, USBL, ...
Page 4
Electrical Characteristics -25°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 Adapter Present Indicator V ADPP Threshold Voltage ADP Voltage ...
Page 5
Electrical Characteristics -25°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) V Input High Threshold ...
Page 6
Typical Characteristics I vs. R FASTCHARGE SET 10000 1000 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 -50 - Temperature ...
Page 7
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 Current vs. Battery Voltage ...
Page 8
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 5.5 Supply Voltage (V) ...
Page 9
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. ADPSET Resistor (kΩ Ω ) Counter Timeout vs. Temperature (CT = 0.1µ ...
Page 10
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 AC adapter inputs, while ...
Page 11
Charging Operation Regardless of which charge input function is selected (i.e., either the adapter input or USB input), the AAT3686 has four basic modes for the battery charge cycle: pre-conditioning/trickle charge; constant current/fast charge; constant voltage; and end of charge ...
Page 12
When the input supply is disconnected or drops below UVLO the charger will automati- cally enter power-saving sleep mode. Consuming an ultra-low 0.3µA in sleep mode (1µA for AAT3686-1), the AAT3686 minimizes battery drain when it ...
Page 13
Application Information AC Adapter / USB System Power Charging Adapter Mode In the adapter mode, constant current charge lev- els up to 1.5A can be programmed by the user. The AAT3686 system control will always select the adapter input over ...
Page 14
ADP USBH (kΩ Ω ) (kΩ Ω 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 ...
Page 15
Programming Charge Current The fast charge constant current charge level for both adapter and USB input modes are pro- grammed with set resistors placed between the ADPSET, USBH, and USBL pins and ground. The accuracy of the fast charge, as ...
Page 16
Over-Voltage Protection An over-voltage event is defined as a condition where the voltage on the BAT pin exceeds the max- imum battery charge voltage and is set by the over- voltage protection threshold (V OVP age condition occurs, the AAT3686 ...
Page 17
Event Description Charge Disabled or Low Supply Charge Enabled Without Battery Battery Charging Charge Completed Fault The required ballast resistor value can be estimat- ed using the following formulas: For connection to the adapter supply ADP R ...
Page 18
Number DATA Report Status 1 Chip Over-Temperature Shutdown 2 Battery Temperature Fault 3 Over-Voltage Turn Off 4 Not Used 5 ADP Watchdog Time-Out in Battery Condition Mode 6 ADP Battery Condition Mode 7 ADP Watchdog Time-Out in Constant Current Mode ...
Page 19
Timing Diagram SQ SQ PULSE System Reset System Start CK T SYNC Data DATA(RPT) SYNC T > OFF DATA Thermal Considerations The AAT3686 is offered in a 3x4mm TDFN pack- age and a ...
Page 20
Example: For an application where the fast charge current for the adapter mode is set to 1A, V ADP worst case battery voltage is 3.0V, what is the max- imum ambient temperature where the thermal lim- iting will become active? ...
Page 21
AAT3686 Evaluation Board Schematic Diagram Figure 5: AAT3686 Evaluation Board Component Side Layout. D4 (b) USB BAV74LT1 D4 (a) ADP BAV74LT1 BAT 10μF 10μF 10μF Figure 8: AAT3686 Evaluation Board Schematic Diagram. 3686.2006.10.1.9 Lithium-Ion/Polymer Battery Charger Figure ...
Page 22
... Panasonic/ECG R3, 4 0603 Panasonic/ECG R5 0603 Panasonic/ECG R7, 8, 0603 Panasonic/ECG 9, 10 SW1 Switch ITT Industries/C&K Div U1 TDFN34-16; AnalogicTech TDFN44-16 USB Port/AC Adapter Part # 6821-0-0001-00-00-08-0 277-1274-ND 277-1273-ND H2959CT-ND 490-1717-1-ND 478-1244-2-ND BAV74LT1 6821-0-0001-00-00-08-0 P10KJTR-ND P9.76KHCT-ND P42.2KHTR-ND P1.5KCGCT-ND CKN9012-ND AAT3686IRN-4.2 AAT3686IXN-4.2 3686.2006.10.1.9 ...
Page 23
... Part Number (Tape and Reel) 1 PHXYY PHXYY SKXYY TDFN34-16 Detail "B" Bottom View Pin 1 Indicator (optional) Option A: Option B: C0.30 (4x) max R0.30 (4x) max Chamfered corner Round corner Detail "A" USB Port/AC Adapter 2 AAT3686IRN-4.2-T1 AAT3686IXN-4.2-T1 AAT3686IXN-4.2-1-T1 0.35 ± 0.10 0.20 MIN 0.075 ± 0.075 Detail "B" 23 ...
Page 24
Index Area (D/2 x E/2) 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. AnalogicTech cannot assume responsibility for use of any circuitry other than ...