AAT3690 AAT, AAT3690 Datasheet

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... Status monitor output pins are provided to indicate the battery charge status by directly driving two external LEDs. The AAT3690 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 tem- perature range. ...

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Pin Descriptions Pin # Name Type 1, 10 USB In 2 BAT In/Out 3 ADP In 4 GND Ground In/Out 7 STAT2 Out 8 STAT1 Out 9 CT In/Out 11 USBSET In/Out 12 ADPSET In/Out ...

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Absolute Maximum Ratings Symbol Description V USB, ADP, <30ms, Duty Cycle <10 USB, ADP Continuous P V BAT, USBSEL, USBSET, ADPSET, STAT1, STAT2, TS, CT Operating Junction Temperature Range J T Maximum Soldering Temperature (at ...

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... Adapter Charging Transistor R DS(ON)A On Resistance USB Charging Transistor R DS(ON)U On Resistance 1. The AAT3690 output charge voltage is specified over the 0° to 70°C ambient temperature range; operation over the -40°C to +85°C temperature range is guaranteed by design. 4 Lithium-Ion/Polymer Battery Charger 1 Conditions Rising Edge CC Charge Current = 500mA ...

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... Thermal Loop Entering Threshold LOOP_IN T Thermal Loop Exiting Threshold LOOP_OUT T Over-Temperature Shutdown Threshold OVSD 1. The AAT3690 output charge voltage is specified over the 0° to 70°C ambient temperature range; operation over the -40°C to +85°C temperature range is guaranteed by design. 3690.2007.01.1.2 Lithium-Ion/Polymer Battery Charger 1 Conditions C = 100nF ...

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Typical Characteristics I vs. R FASTCHARGE SET 10000 1000 USB 100 (kΩ) SET Recharge Voltage vs. Temperature 4.14 4.13 4.12 4.11 ADP 4.10 4.09 USB 4.08 4.07 4.06 4.05 4.04 -50 - Temperature (°C) ...

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Typical Characteristics USB Charging Current vs. Battery Voltage = 8.06kΩ Ω USBSET 600 500 400 300 200 100 0 2.5 3 3.5 Battery Voltage (V) USB Fast Charge Current vs. Supply Voltage ; USB = 8.06kΩ Ω ) ...

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Typical Characteristics Adapter Mode Supply Current vs. ADPSET Resistor 0.8 0.7 0.6 0.5 Constant Current 0.4 0.3 0.2 0.1 0 ADPSET Resistor (kΩ Ω ) Counter Timeout vs. Temperature (CT = 0.1μ μ ...

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... The adapter charge input constant current level can be programmed up to 1.0A for rapid charging appli- cations. In the absence of a high-current adapter input source, the AAT3690 can be powered from a USB port V supply. The USB constant charge BUS current can be externally programmed for maximum constant current charge levels ...

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... Charging Operation Regardless of which charge input function is selected (i.e., either the adapter input or USB input), the AAT3690 has three basic modes for the battery charge cycle: constant current/fast charge; constant voltage; and end of charge (see Figure 1). Charge Complete Voltage Regulated Current Figure 1: Current vs. Voltage Profile During Charging Phases. ...

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System Operation Flow Chart Power On Power On USB Loop Reset Reset Conditions Monitor Yes Yes Recharge Test Current Phase Test No V > V RCH BAT Voltage Phase Test 3690.2007.01.1.2 Lithium-Ion/Polymer Battery Charger ADP Yes Power Select USB ADP ...

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... AAT3690 system control will always select the adapter input over the USB supply input whenever adapter voltage is present on the ADP pin. The AAT3690 will operate from the adapter input over a 4.0V to 5.5V range. The constant current fast charge current for the adapter input mode is set by the R connected between ADPSET and ground ...

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... IC on and off. The enable (EN) pin is active high and is internally pulled up to the high- er voltage of ADP and USB supplies. When pulled to a logic low level, the AAT3690 will be shut down 3690.2007.01.1.2 Lithium-Ion/Polymer Battery Charger and forced into the sleep state. Charging will be ...

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... During an over-voltage event, the STAT LEDs will report a system fault. Over-Temperature Shutdown Time The AAT3690 has a thermal protection control cir- cuit which will shut down charging functions should 3 hours the internal die temperature exceed the preset 3 hours thermal limit threshold ...

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... Status Indicator Display Simple system charging status may be displayed using one or two LEDs in conjunction with the STAT1 and STAT2 pins on the AAT3690. These two pins are simple switches to connect the LED cathodes to ground not necessary to use both display LEDs if a user simply wants to have a single lamp to show " ...

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... Thermal Considerations The AAT3690 is offered in a 3x3mm TDFN pack- age which can provide up to 2.0W of power dissi- pation when it is properly bonded to a printed cir- cuit board and has a maximum thermal resistance of 50°C/W. Many considerations should be taken into account when designing the printed circuit ...

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... If the AAT3690 adapter input used in a sys- tem with an external power supply source, such as a typical AC-to-DC wall adapter, then a C tor in the range of 10μF should be used. A larger ...

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... JP1 PRPN401PAEN JP2 Chip Resistor D1 CMD15-21SRC/TR8 D2 CMD15-21VGC/TR8 DS1 (a, b) BAV74LT-A Table 3: AAT3690 Evaluation Board Bill of Materials. 18 1.0A USB Port/Adapter Lithium-Ion/Polymer Battery Charger Figure 5: AAT3690 Evaluation Board Bottom Side Layout. Description 1.0A USB Port/Adapter Lithium-Ion/ Polymer Battery Charger; 12-Pin 3x3 TDFN Package 8.06KΩ, 1%, 1/4W; 0603 10KΩ ...

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... A solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder connection. 3690.2007.01.1.2 Lithium-Ion/Polymer Battery Charger Marking Part Number (Tape and Reel) 1 RUXYY TDFN33-12 Detail "A" 1.70 ± 0.05 Bottom View 0.05 ± 0.05 Side View 1.0A USB Port/Adapter 2 AAT3690IWP-4.2-T1 0.43 ± 0.05 0.1 REF Pin 1 Indicator (optional) Detail "A" 19 ...

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