AAT3673IXN-4.2-1-T1

DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager General Description Features The AAT3673 BatteryManager is a highly integrated single-cell (4.2V) lithium-ion/polymer battery charger and system power management IC that enables simultaneous battery charging and system load management. For increased safety, the AAT3673 includes over-voltage input protection (OVP) up to 28V. • System Load Power Control from Either ADP or Battery • ADP Presence Automatically Routes Power from Source to Load and Charges Battery • Automatic Charge Reduction Loop to Minimize Charge Time with USB Input • 4.0V~6.5V Input Voltage Range • Over-Voltage Input Protection (OVP) up to 28V • Digitally Controlled Thermal Protection • Battery Power Enable • Programmable Battery Charge Timer • Battery Cell Temperature Sensing • Charge Status Reporting (LEDs) • Automatic Recharge Sequencing • Battery Over-Voltage, Over-Current, and Over-Temperature Protection • System Load Current Limiting • 16-pin 4 × 4mm TDFN Package The AAT3673 provides charging current and system power management from a single input that may be supplied by an AC adapter or USB port power source (ADP). This device allows the user to program the battery charge current up to 1.6A depending on the current shared with the system output. A battery charge timeout timer is provided for charging safety and the charge termination current is also user-programmable. The AAT3673 employs a battery charge current reduction function that enables continued system operation in the event the input source can not supply the required load current. When operated under excessive thermal conditions, the AAT3673 has a digitally controlled thermal loop which allows the maximum possible charging current for any given ambient temperature condition. Battery temperature, voltage and charge state are monitored for fault conditions. The AAT3673-1/-2/-4/-5 has two status monitor output pins (STAT1 and STAT2), and the AAT3673-3/-6 has one status monitor output (STAT1) provided to indicate battery charge status by directly driving external LEDs. Applications • • • • • • Cellular Phones Digital Still Cameras Digital Video Cameras Global Positioning Systems (GPS) MP3 Players Handheld PCs The AAT3673 is available in a Pb-free, thermally enhanced, space-saving 16-pin 4 × 4mm TDFN package. Typical Application System Load STAT2 Adapter Input ADP BYP CADP 10μF CBAT 10μF Enable Battery to Out RTERM TS ENO Enable Battery to Out CHR Threshold ENBAT CT TERM RADP Battery Pack CHRADP ADPSET Temp Enable Input to Output CHR Threshold ENBAT EN2 TS ENO CBAT 10μF BYP 10kΩ EN2 Temp Enable Input to Output AAT3673-3/-6 EN1 10kΩ EN BAT EN1 AAT3673-1/-2/-4/-5 Enable BAT+ ADP BAT Adapter Input OUT STAT1 BAT+ CADP 10μF System Load OUT STAT1 CHRADP ADPSET BYP TERM GND CBYP CT RADP RTERM Battery Pack CT BYP GND CBYP Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201881B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012 CT 1 DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager Pin Descriptions Pin # Name Type 1 ADPSET I 2 ADP I 3 BYP I 4 STAT1 O STAT2 O EN2 I GND I/O EN I EN1 I 8 ENO I 9 ENBAT I 10, 11 BAT I/O 12 CHRADP I 13 TERM I 14 TS I 15 OUT O 16 CT I EP EP I/O 5 6 7 2 Function Connect a resistor from this pin to GND to set the ADP fast charge constant current. The programmed constant current level should be less than the ADP current limit set by ADPLIM specification (ILIM_ADP). Adapter input, source of system load and battery charging. Connect a 1μF (minimum) ceramic capacitor as close as possible between ADP and GND. Input for the over-voltage protection bypass node. Connect a 1μF (minimum) ceramic capacitor between this pin and GND. This open-drain MOSFET device is for charger status reporting. If used for status indication display, connect an LED Cathode to this node with a series ballast resistor. Connect the LED anode to OUT or BYP. AAT3673-1/-2/-4/-5: This open-drain MOSFET device is for charger status reporting. If used for status indication display, connect an LED cathode to this node with a series ballast resistor. Connect the LED anode to OUT or BYP. AAT3673-3/-6: The EN2 pin (internal pull-up) is used together with the EN1 pin; see Table 2 in the "Functional Description" section of this datasheet. Common ground connection. AAT3673-1/-2/-4/-5: Input enable (internal pull-up). Low to enable the ADP switch and battery charging path; high to disable the ADP switch and battery charging function. See Table 1 in the "Functional Description" section of this datasheet. AAT3673-3/-6: The EN1 pin (internal pull-up) is used together with the EN2 pin; see Table 2 in the "Functional Description" section of this datasheet. Enable Input power to OUT, the dynamic power path from the ADP input to the system load. Active low input (internal pull-up). Battery load switch enable, active low. Battery load switch control the power path between the battery cell and OUT (internal pull-up). Battery pack (+) connection. For best operation, a 1μF (minimum) ceramic capacitor should be placed as close as possible between BAT and GND. Adaptor mode charge reduction voltage threshold programming pin. The ADP charge reduction threshold may be adjusted from the default value by placing a voltage divider between this pin to VADP and GND to this pin. Connect a resistor between this pin and GND to program the charge termination current threshold. The charge termination current level can be disabled by connecting this pin to BYP. Battery temperature sensing input. For typical applications, connect a 10kΩ resistor from BYP to this pin and a 10kΩ NTC thermistor located inside the battery pack under charge to this pin and GND to sense battery over temperature conditions during the charge cycle. To disable the TS function, connect this pin to GND. System dynamic power output supplied from the ADP input, BAT or both. Connect a 10μF ceramic capacitor between this pin and GND. Battery charge timer input pin, connect a capacitor on this pin to set the ADP charge timers. Typically, a 0.1μF ceramic capacitor is connected between this pin and GND. To disable the timer circuit function, connect this pin directly to GND. Exposed paddle (package bottom). Connect to GND plane under the device. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201881B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012 DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager Pin Configuration TDFN44-16 (Top View) AAT3673-1/-2/-4/-5 ADPSET ADP BYP STAT1 STAT2 GND EN ENO 1 16 2 15 3 14 4 13 5 EP 12 6 11 7 10 8 9 CT OUT TS TERM CHRADP BAT BAT ENBAT AAT3673-3/-6 ADPSET ADP BYP STAT1 EN2 GND EN1 ENO 1 16 2 15 3 14 4 5 EP 13 12 6 11 7 10 8 9 CT OUT TS TERM CHRADP BAT BAT ENBAT Absolute Maximum Ratings Symbol VIN VP Description ADP Continuous BAT, OUT, BYP 2.9V. If the cell voltage fails to reach the preconditioning threshold of 2.9V (typ) before the safety timer expires, the cell is assumed to be damaged and the charge cycle terminates. If the cell voltage exceeds 2.9V prior to the expiration of the timer, the charge cycle proceeds into fast charge. There are two timeout periods: 50 minutes for Trickle Charge mode, and 6 hours for Constant Current Mode and Constant Voltage mode altogether. (TD · 100nF) 7 If the programmable watchdog timer function is not needed, it can be disabled by terminating the CT pin to ground. The CT pin should not be left floating or unterminated, as this will cause errors in the internal timing control circuit. The constant current provided to charge the timing capacitor is very small, and this pin is susceptible to noise and changes in capacitance value. Therefore, the timing capacitor should be physically located on the printed circuit board layout as close as possible to the CT pin. Since the accuracy of the internal timer is dominated by the capacitance value, a 10% tolerance or better ceramic capacitor is recommended. Ceramic capacitor materials, such as X7R and X5R types, are a good choice for this application. System Operation Flowchart Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201881B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012 DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager UVLO VADP > VUVLO Yes Power On Reset Yes No Switch On No Thermal Loop Enable Sleep Mode No Enable Dynamic Charge VENBAT > VEN Fault Condition Monitor OV, OT, OC Yes No Shutdown Mode Device Temperature Monitor TJ > 110°C No Yes Connect ADP to BAT and OUT Yes Battery Temperature Sense. VTS1 < TS < VTS2 Yes No Thermal Loop Current Reduction Battery Temperature Fault Expire Power Share Charge Timer (Enable on Charger reset) No Recharge Test VRCH > VBAT? No Current Limit Test IOUT > ILIM_ADP Yes Reduce Charging Current to BAT Yes Preconditioning Test VMIN > VBAT IOUT + ICH_CC > ILIM_BAT? Low Current Conditioning Charge Yes Constant Current Charging Mode Yes Constant Voltage Charge Mode Set No Current Phase Test VCO(REG) > VBAT No Voltage Phase Test ICH_CC > ICH_TERM No Yes Charge Reduction Mode No Yes Yes Charge Complete Voltage Regulation Enable Input Voltage Level Test VADP < VCHR_TH Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201881B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012 No 19 DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager Applications Information BYP Adapter or USB Port Power Source In the adapter mode, constant current charge levels up to 1.6A may be programmed by the user. The ADP input will operate over a range from 4.0V to 6.5V. The constant fast charge current for the adapter input mode is set by the RADP resistor connected between the ADPSET pin and ground. The battery preconditioning or trickle charge current is fixed at 10% of the programmed fast charge constant current level. Refer to Table 4 for recommended RADP values for a desired constant current charge level. Please refer to the Battery Charge Status Indication discussion on page 21 of this datasheet for further details. BYP R3 1M CHRADP VCH_REG = 2.0 R4 800k Figure 3: Internal Equivalent Circuit for the CHRADP Pin. Charge Reduction Under normal operation, the AAT3673 should be operated from an adapter power source with a sufficient capacity to supply the desired constant charge current plus any additional load which may be placed on the source by the operating system. In the event that the power source to the ADP pin is unable to provide the programmed fast charge constant current, or if the system under charge must also share supply current with other functions, the AAT3673 will automatically reduce the ADP fast charge current level to maintain the integrity of the source supply, power the operating system, and charge the battery cell with the remaining available current. Adapter Input Charge Inhibit and Resume The ADP charge reduction system becomes active when the voltage on the ADP input falls below the ADP charge reduction threshold (VCHR_TH), which is preset to 4.5V. Should the input supply drop below the VCHR_TH threshold, the charge reduction system will reduce the fast charge current level in a linear fashion until the voltage sensed on the ADP input recovers to the charge reduction threshold voltage. The ADP charge reduction threshold (VCHR_TH) may be externally set to a value other than 4.5V by placing a resistor divider network between the BYP pin and ground with the center connected to the CHRADP pin. The ADP charge reduction feature may be disabled by shorting the CHRADP pin directly to the BYP pin. Programming Fast Charge Current The following equation may be used to approximate the ADP charge reduction threshold above or below 4.5V: VCHR_TH = The AAT3673 has an under-voltage lockout (UVLO) and power on reset feature to protect the charger IC in the event the voltage on the BYP pin drops below the UVLO threshold. Under a UVLO condition, the charger will suspend the charging process. When power is applied to the adapter pin again or the UVLO condition recovers, the system charge control will asses the state of charge on the battery cell and will automatically resume charging in the appropriate mode for the condition of the battery. The constant current charge level is user programmable with a set resistor connected between the ADPSET pin and ground. The accuracy of the constant charge current, as well as the preconditioning trickle charge current, is dominated by the tolerance of the set resistor used. For this reason, a 1% tolerance metal film resistor is recommended for the set resistor function. The constant charge current levels from 100mA to 1.6A may be set by selecting the appropriate value from Table 4. Charge current setting formula: ICH_CC_ADP (typ) = VADP · KII_CC_ADP RADP 2.0V (R4/[R4 + R3]) where R4 and R3 « 500k. 20 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201881B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012 DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager Battery Connection (BAT) Constant Charge Current (mA) Set Resistor Value (kΩ) 100 200 300 400 500 800 1000 1600 576 287 191 143 113 69.8 56.2 33.4 Battery Charge Status Indication Charge Status Indicator Outputs Table 4: RADP Values. Figure 4 shows the relationship of constant charging current and set resistor values for the AAT3673. Constant Charge Current (mA) A single cell Li-Ion/Polymer battery should be connected between BAT input and ground. There are six device options, which are described in Table 11 on page 26. All options include recharge sequence after adapter is inserted. The AAT3673-1/-4 and AAT36732/-5 have two status (STAT1 and STAT2) pins and one enable pin (EN); the AAT3673-3/-6 has one status pin (STAT1) and two enable pins (EN1 and EN2) Charge State 10000 Pre-Charge Fast-Charge Charge Complete Charge Disabled, Sleep Mode or Fault Condition Constant Current Pre-Conditioning 1000 100 No Battery (with Charge Enabled) STAT1 STAT2 ON ON OFF ON OFF ON OFF OFF Flash (1Hz, 40% duty) Flash (1Hz, 40% duty) 10 Table 6: AAT3673-1/-4 LED Status Indicators. 1 10 100 1000 10000 Charge State RADP (kΩ) Pre-Charge or Fast-Charge Charge Complete, Charge Disabled, or Sleep Mode Fault Condition Figure 4: Constant Charging Current vs. Set Resistor Values. No Battery (with Charge Enabled) For the AAT3673-3/-6, the two enable inputs select between four possible operating modes: two internally fixed charging current modes (USB Low =100mA or USB high = 500mA), an externally programmable charging current mode, and a shutdown mode. The STAT1 functionality is identical for all three modes and does not depend on the EN1 and EN2 enable inputs. EN1 EN2 Operating Mode 0 0 0 1 1 0 1 1 USB Low, 100mA charging current USB High, 500mA charging current Using RADP to program charging current Shutdown mode Table 5: AAT3673-3/-6 Operating Modes. STAT1 STAT2 ON OFF OFF OFF OFF Flash (1Hz, 40% duty) ON OFF Table 7: AAT3673-2/-5 LED Status Indicators. Charge State STAT1 Pre-Charge or Fast-Charge Charge Complete, Charge Disabled, Sleep Mode, or Fault Condition No Battery (with Charge Enabled) ON OFF Flash (1Hz, 40% duty) Table 8: AAT3673-3/-6 LED Status Indicators. Fault condition can be one of the following: • • • • Battery over-voltage (OV) Battery temperature sense hot or cold Battery charge timer time-out Chip thermal shutdown Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201881B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012 21 DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager Status Indicator Display Simple system charging status states can be displayed using one LED each in conjunction with the STAT1 and STAT2 pins of the AAT3673-1/-2/-4/-5 and the STAT1 pin of the AAT3673-3/-6. These pins have simple switches connecting the LED’s cathodes to ground. Refer to Tables 6, 7, and 8 for LED display definitions. The LED anodes should be connected to BYP or other system power that does not exceed 6.5V, depending upon system design requirements. The LED should be biased with as little current as necessary to create reasonable illumination; therefore, a ballast resistor should be placed between the LED cathode and the STAT1 and STAT2 pins of the AAT3673-1/-2/-4/-5 and the STAT1 pin of the AAT3673-3/-6. A 2mA bias current should be sufficient to drive most low cost green or red LEDs. It is not recommended to exceed 8mA when driving an individual status LED. The required ballast resistor value can be estimated using the following formulas: When connecting to the adapter supply with a red LED: RB(STAT1,2) = VADP - VFLED ILED(STAT1,2) Example: RB(STAT1,2) = 5.5V - 2.0V = 1.75kΩ 2mA Red LED forward voltage (VF) is typically 2.0V @ 2mA. When connecting to the USB supply with a green LED: RB(STAT1,2) = VUSB - VFLED ILED(STAT1,2) Example: RB(STAT1,2) = 5.0V - 3.2V = 900Ω 2mA The thermal management system measures the internal circuit die temperature and reduces the charge current when the device exceeds a preset internal temperature control threshold. Once the thermal loop control becomes active, the constant charge current is initially reduced by a factor of 0.44. The initial thermal loop current can be estimated by the following equation: Constant Charging: ITLOOP = ICCADP · 0.44 The thermal loop control re-evaluates the internal die temperature every three seconds and adjusts the fast charge current back up in small steps up to the full fast charge current level or until an equilibrium current is discovered and maximized for the given ambient temperature condition. In this manner, the thermal loop controls the system charge level. The AAT3673 will always provide the highest possible level of constant current in the fast charge mode for any given ambient temperature condition. Programmable Watchdog Timer The AAT3673 contains a watchdog timing circuit which operates in all charging modes. Typically a 0.1μF ceramic capacitor is connected between the CT pin and ground. When a 0.1μF ceramic capacitor is used, the device will time a shutdown condition if the trickle charge mode exceeds 50 minutes. When the device transitions from the trickle charge to the fast charge constant current mode and then to the constant voltage mode, the timer counting is continuous but the timeout value changes from 50 minutes to 7 hours. Summary for a 0.1μF used for the timing capacitor: Trickle Charge (TC) time out = 50 minutes Trickle Charge (TC) + Fast Charge Constant Current (CC) + Constant Voltage (CV) mode time out = 7 hours Thermal Loop Control The CT pin is driven by a constant current source and will provide a linear response to increases in the timing capacitor value. Thus, if the timing capacitor were to be doubled from the nominal 0.1μF value, the time out time of the CC + CV modes would be doubled. The corresponding trickle charge time out time would be the combined CC + CV time divided by 8. Due to the integrated nature of the linear charging control pass devices for both the adapter and USB modes, a special thermal loop control system has been employed to maximize charging current under all operating conditions. If the programmable watchdog timer function is not needed it may be disabled by terminating the CT pin to ground. The CT pin should not be left floating or not terminated; this will cause errors in the internal timing control circuit. Green LED forward voltage (VF) is typically 3.2V @ 2mA. Protection Circuitry 22 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201881B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012 DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager The counter input frequency will be divided by two in the event of a fault condition. Such fault conditions include digital thermal loop charge current reduction, battery charge reduction, and battery current sharing with the output during the charging cycle. When the fault condition recovers, the counter will resume the timing function. The charge timer will automatically reset when the AAT3673 enable pin is reset or cycled off and on. The constant current provided to charge the timing capacitor is very small and this pin is susceptible to noise and changes in capacitance value. Therefore, the timing capacitor should be physically located on the printed circuit board layout as close as possible to the CT pin. Since the accuracy of the internal timer is determined by the capacitance value, a 10% tolerance or better ceramic capacitor is recommended. Ceramic capacitor materials such as X7R and X5R type are a good choice for this application. Battery Over-Voltage Protection An over-voltage event is defined as a condition where the voltage on the BAT pin exceeds the maximum battery charge voltage and is set by the over-voltage protection threshold (VBOVP). If an over-voltage condition occurs, the AAT3673 charge control will shutdown the device until voltage on the BAT pin drops below the overvoltage protection threshold (VBOVP). The AAT3673 will resume normal charging operation once the battery over-voltage condition is removed. Over-Temperature Shutdown The AAT3673 has a thermal protection control circuit which will shut down charging functions should the internal die temperature exceed the preset thermal limit threshold. Thermal shutdown also turns off the switches from ADP to OUT and BAT to OUT. Battery Temperature Fault Monitoring In the event of a battery over- or under-temperature condition, the charge control will turn off the internal charge path regulation device and disable the BAT-OUT dynamic path. After the system recovers from a temperature fault, the device will resume charging operation. The AAT3673 checks battery temperature before starting the charge cycle, as well as during all stages of charging. Typically, batteries employ the use of a negative temperature coefficient (NTC) thermistor that is integrated into the battery. Capacitor Selection Input Capacitor A 1μF or larger capacitor is typically recommended for CADP. CADP should be located as close to the device ADP pin as practically possible. Ceramic, tantalum, or aluminum electrolytic capacitors may be selected for CADP. There is no specific capacitor equivalent series resistance (ESR) requirement for CADP. However, for higher current operation, ceramic capacitors are recommended for CADP due to their inherent capability over tantalum capacitors to withstand input current surges from low impedance sources such as batteries in portable devices. Typically, 50V rated capacitors are required for most of the application to prevent any surge voltage. Ceramic capacitors selected as small as 1206 are available which can meet these requirements. Other voltage rating capacitor can also be used for the known input voltage application. Charger Output Capacitor The AAT3673 only requires a 1μF ceramic capacitor on the BAT pin to maintain circuit stability. This value should be increased to 10μF or more if the battery connection is made any distance from the charger output. System Power Output Capacitor For proper load voltage regulation and operational stability, a capacitor is required between OUT and GND. The output capacitor connection to the ground pin should be made as directly as practically possible for maximum device performance. Since the regulator has been designed to function with very low ESR capacitors, a 10μF ceramic capacitor is recommended for best performance. Printed Circuit Board Layout Recommendations For proper thermal management and to take advantage of the low RDS(ON) of the AAT3673, a few circuit board layout rules should be followed: IN and BAT should be routed using wider than normal traces, and GND should be connected to a ground plane. To maximize package thermal dissipation and power handling capacity of the AAT3673 TDFN4x4 package, solder the exposed paddle of the IC onto the thermal landing of the PCB, where the thermal landing is connected to the ground plane. If heat is still an issue, multi-layer boards with dedicated ground planes are recommended. Also, adding more thermal vias on the thermal landing would help transfer heat to the PCB effectively. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201881B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012 23 DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager 24 Figure 4: AAT3673-1/-2/-4/-5 Evaluation Board Top Layer. Figure 5: AAT3673-1/-2/-4/-5 Evaluation Board Bottom Layer. Figure 6: AAT3673-3/-6 Evaluation Board Top Layer. Figure 7: AAT3673-3/-6 Evaluation Board Bottom Layer. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201881B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012 DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager 5V D1 Green LED +5V U1 4 D2 Red LED TDFN44-16 OUT STAT1 R5 1.5K 5 C5 10μF STAT2 R6 1.5K J1 3 2 1 J2 J3 3 2 1 7 BAT 11 BAT 10 BAT EN BYP AAT3673-1/-2/-4/-5 EN 3 2 1 OUT 15 9 ENBAT C2 10μF R7 10K TS 14 CT 16 TS ENBAT 8 ENO BYP ENO 2 ADP R3 ADP CHRADP 1 12 ADPSET R4 C4 0.1μF 13 C1 10μF TERM R2 R1 BYP GND R8 10K 3 C3 10μF 6 Figure 8: AAT3673-1/-2/-4/-5 Evaluation Board Schematic. 5V U1 D1 Green LED +5V 4 TDFN44-16 STAT1 OUT OUT 15 R5 1.5K C5 10μF J1 3 2 1 J2 3 2 1 J3 3 2 1 J4 3 2 1 7 EN1 EN1 5 BAT 11 BAT 10 EN2 BAT BYP AAT3673-3/-6 EN2 9 ENBAT TS 14 CT 16 C2 10μF R6 10K TS ENBAT 8 ENO BYP ENO 2 ADP R3 ADP CHRADP 1 13 C1 10μF ADPSET R4 BYP TERM GND R1 R2 12 6 C4 0.1μF R7 10K 3 C3 10μF Figure 9: AAT3673-3/-6 Evaluation Board Schematic. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201881B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012 25 DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager Component Part Number Description Manufacturer U1 R1 R2 R5, R6 R7, R8 C4 C1, C2, C3, C5 J1, J2, J3 D1 D2 AAT3673-1/-2/-4/-5IXN Chip Resistor Chip Resistor Chip Resistor Chip Resistor GRM188R61A225KE34 GRM21BR71A106KE51L PRPN401PAEN LTST-C190GKT LTST-C190CKT 1.6A Linear Li-Ion/Polymer Battery Charger in TDFN4x4-16 Package 57.6kΩ, 1%, 1/4W; 0603 71.5kΩ, 5%, 1/4W; 0603 1.5kΩ, 5%, 1/4W; 0603 10kΩ, 5%, 1/4W; 0603 0.1μF 10V 10% X5R 0603 10μF 10V 10% X7R 0805 Conn. Header, 2mm zip Green LED; 0603 Red LED; 0603 Skyworks Vishay Sullins Electronics Lite-On Inc. Table 9: AAT3673-1/-2/-4/-5 Evaluation Board Bill of Materials (BOM). Component Part Number Description Manufacturer U1 R1 R2 R5 R6, R7 C4 C1, C2, C3, C5 J1, J2, J3, J4 D1 AAT3673-3/-6IXN Chip Resistor Chip Resistor Chip Resistor Chip Resistor GRM188R61A225KE34 GRM21BR71A106KE51L PRPN401PAEN LTST-C190GKT 1.6A Linear Li-Ion/Polymer Battery Charger in TDFN4x4-16 Package 57.6kΩ, 1%, 1/4W; 0603 71.5kΩ, 5%, 1/4W; 0603 1.5kΩ, 5%, 1/4W; 0603 10kΩ, 5%, 1/4W; 0603 0.1μF 10V 10% X5R 0603 10μF 10V 10% X7R 0805 Conn. Header, 2mm zip Green LED; 0603 Skyworks Vishay Murata Sullins Electronics Lite-On Inc. Table 10: AAT3673-3/-6 Evaluation Board Bill of Materials (BOM). Product Constant Voltage Regulation (V) OVP Trip Point (V) OVP Turn On Delay Time (μs) Preconditioning Voltage Threshold (V) AAT3673-1 AAT3673-2 AAT3673-3 AAT3673-4 AAT3673-5 AAT3673-6 4.2 4.2 4.2 4.2 4.2 4.2 6.75 6.75 6.75 6.75 6.75 6.75 130 130 130 80,000 80,000 80,000 2.9 2.9 2.9 2.9 2.9 2.9 Number of Status Pins Number of Enable Pins 2; 2; 1; 2; 2; 1; 1; 1; 2; 1; 1; 2; see see see see see see Table Table Table Table Table Table 6 7 8 6 7 8 Table 11: AAT3673 Options. 26 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201881B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012 see see see see see see Table Table Table Table Table Table 1 1 2 1 1 2 DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager Ordering Information Package Marking1 Part Number (Tape and Reel)2 TDFN44-16 TDFN44-16 TDFN44-16 TDFN44-16 TDFN44-16 TDFN44-16 9SXYY 9XXYY 8SXYY AAT3673IXN-4.2-1-T1 AAT3673IXN-4.2-2-T1 AAT3673IXN-4.2-3-T1 AAT3673IXN-4.2-4-T1 AAT3673IXN-4.2-5-T1 AAT3673IXN-4.2-6-T1 Skyworks Green™ products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Definition of Green™, document number SQ04-0074. Packaging Information TDFN44-163 3.30 ± 0.05 Detail "B" 4.00 ± 0.05 Index Area (D/2 x E/2) 0.3 ± 0.10 0.375 ± 0.125 0.16 0.075 ± 0.075 0.1 REF 4.00 ± 0.05 2.60 ± 0.05 Top View Pin 1 Indicator (optional) 0.23 ± 0.05 Bottom View 0.45 ± 0.05 Detail "A" 0.229 ± 0.051 + 0.05 0.8 -0.20 7.5° ± 7.5° 0.05 ± 0.05 Detail "B" Option A: C0.30 (4x) max Chamfered corner Option B: R0.30 (4x) max Round corner Side View Detail "A" 1. XYY = assembly and date code. 2. Sample stock is generally held on part numbers listed in BOLD. 3. The leadless package family, which includes QFN, TQFN, DFN, TDFN and STDFN, has exposed copper (unplated) at the end of the lead terminals due to the manufacturing process. A solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder connection. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201881B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012 27 DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager Copyright © 2012 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. 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Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters. Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference. 28 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201881B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012