APL3207 Li+ Battery Charger and Low Dropout Linear Regulator Combo Features General Description • Programmable Charge Current Up to 700mA • Charge Status Output Pin The APL3207 combines a constant-current/constant-voltage linear single cell Li+ battery charger with a low drop- • Soft-Start Limits Inrush Current • 4.2V Charge Termination Voltage with ±1% out linear regulator. Both charger and linear regulators can work independently. The small DFN-10 package and low external component count make the APL3207 ideally suit to portable applications. Accuracy • 45mA Pre-charge Current (RSET=2k) • Thermal Regulation of Charge Current Simplifies • Charger Enable/Disable Control • Ultra Low Regulator Quiescent Current: 4µA • Fixed LDO Regulator Output Voltage: 3.3V • Low Regulator Dropout Voltage: 200mV@150mA • LDO Regulator Current Limit Protection • LDO Regulator Short Circuit Current Limit • LDO Regulator Thermal Protection • Small 3mmx3mm DFN 10-Pin (DFN-10) Package • Lead Free and Green Devices Available The charger of APL3207 provides 0.7A charge current with thermal regulation protection to optimize the board Board Design design for compact size and typical thermal conditions. When the junction temperature reaches the thermal regulation threshold, the charger does not shut down but simply reduces the charge current. The charge current can be programmed by connecting an external resistor from the ISET pin to the GND. Using an external MOSFET to disconnect the resistor from the ground shuts down the charger, and reduces the input current down to 25µA. The APL3207 also has the STAT pin to indicate charge status. The LDO regulator of APL3207 can deliver up to 150mA current and dropout voltage is only 200mV. The 4µA low (RoHS Compliant) quiescent current makes it ideally suit to battery-power systems. The LDO regulator also has built-in current limit Applications and thermal shutdown protection. • PDAs • MP3 Players • Cell Phones • Wireless Appliances Simplified Application Circuit USB/Adapter 5V BATT VIN Pin Configuration Li+ Battery ISET STAT BATT VIN BATT GND LDOIN NC 1 2 3 4 5 GND (Bottom) 10 ISET 9 GND 8 STAT 7 LDOOUT 6 LDOOUT LDOIN LDOOUT 3.3V GND APL3207 DFN-10 3x3 Top View ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 1 www.anpec.com.tw APL3207 Ordering and Marking Information Package Code QA : DFN3x3-10 Operating Ambient Temperature Range I : - 40 to 85 oC Handling Code TR : Tape & Reel Assembly Material L : Lead Free Device G : Halogen and Lead Free Device APL3207 Assembly Material Handling Code Temperature Range Package Code APL3207 QA : APL 3207 XXXXX XXXXX - Date Code Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020C for MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by weight). Absolute Maximum Ratings Symbol VIN, VLDOIN (Note 1) Parameter Rating VIN, VLDOIN to GND Voltage VSET, VSTAT, VBATT ISET, STAT, BATT to GND Voltage ICHG Charge Current PD Power Dissipation TJ Maximum Junction Temperature Unit -0.3 to 7 V -0.3 to 7 V 800 mA Internally Limited TSTG Storage Temperature Range TSDR Maximum Lead Soldering Temperature, 10 Seconds W -40 to 150 o -65 to 150 o 260 o C C C Note1: Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Thermal Characteristic Symbol θJA (Note 2) Parameter Junction to Ambient Resistance in Free Air DFN3x3-10 Typical Value Unit 50 °C/W Note 2 : θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. The exposed pad of DFN-10 is doldered directly on the PCB. Recommended Operating Conditions Symbol Range Unit VIN VIN to GND Voltage 4.35 to 6.5 V ICHG Charge Current 0.1 to 0.7 A VLD OIN Parameter (Note 3) LDOIN to GND Voltage 3.6 to 6.5 V ILD O LDO Output Current 0 to 0.15 A TA Ambient Temperature -40 to 85 o TJ Junction Temperature -40 to 125 o C C Note 3 : Refer to the typical application circuit. Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 2 www.anpec.com.tw APL3207 Electrical Characteristics Refer to the typical application circuit. These specifications apply over VIN=5V, VLDOIN=5V, TA= -40 ~ 85 oC, unless otherwise specified. Typical values are at TA=25oC. Symbol Parameter APL3207 Test Conditions Unit Min. Typ. Max. Charge mode, RSET=10k - 300 600 Standby mode (Charge terminated) - 200 500 Shutdown mode (RSET not connect, VIN<V BATT , or VIN<V UVLO ) - 25 50 IOU T=0mA - 4 7 IOU T=150mA - 4 10 BATT Standby Input Current Standby mode, VBATT=4.2V 0 2.5 6 BATT Shutdown Input Current Shutdown mode (RSET not connected) - - 1 BATT Sleep Input Current Sleep mode, V IN=0V - - 1 3.75 3.85 3.95 V 0.15 0.20 0.30 V - 4.20 - V -0.5 - 0.5 -1 - 1 BATT Pre-charge Threshold Voltage 2.8 2.9 3.0 V BATT Pre-charge Hysteresis Voltage 60 80 110 mV VIN from low to high 80 120 160 VIN from high to low 40 80 120 3.9 4.05 4.2 VSE T rising 1.15 1.21 1.3 VSE T falling 0.9 1.0 1.1 91 100 109 455 500 545 - 1 - V -0.7 - 0.7 % - 2.5 - µA SUPPLY CURRENT IIN IQ VIN Supply Current LDO Regulator Quiescent Current µA µA BATT REVERSE CURRENT IB ATT µA UNDER-VOLTAGE LOCKOUT V UVLO VIN UVLO Threshold VIN rising VIN UVLO Hysteresis BATTERY VOLTAGE AND THRESHOLD VOLTAGE VTERM BATT Charge Termination Voltage BATT Charge Termination Voltage Accuracy V ASD VIN -VBATT Lockout Threshold Voltage VRECHARGE Recharge Battery Threshold Voltage V MSD Manual Shutdown Threshold Voltage o TA=25 C, VIN =4.35~6.5V o TA=-40~85 C % mV V V BATTERY CHARGING AND PRE-CHARGE CURRENT RSET =10k IC HG Charging Current Without thermal regulation RSET =2k Without thermal regulation V SET K SET ITERM ISET Regulation Voltage Without thermal regulation ISET Regulation Voltage Accuracy TJ=-40~125 oC, VIN=4.35~6.5V o mA ISET Pull-Up Current VSE T=1V, TA=25 C Charging Current Set Factor 0.1A≤ ICHG ≤0.7A 940 1000 1060 Pre-charging Current VBATT<2.8V, RSET=2k 20 45 70 mA C/10 Termination Current Threshold RSET =2k to 10k 8.5 10 11.5 % Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 3 www.anpec.com.tw APL3207 Electrical Characteristics Refer to the typical application circuit. These specifications apply over VIN=5V, VLDOIN=5V, TA= -40 ~ 85 oC, unless otherwise specified. Typical values are at TA=25oC. Symbol Parameter APL3207 Test Conditions Unit Min. Typ. Max. - 800 1200 mΩ - 400 600 mV CHARGER DROPOUT VOLTAGE Power FET On Resistance VIN to VBATT Dropout Voltage ICHG=0.5A, VIN=5V STAT PIN AND THERMAL REGULATION VSTAT TLIM STAT Output Low Voltage ISTAT=5mA - 0.35 0.6 V STAT Off-leakage Current VSTAT=5V - - 1 µA - 120 - o - 100 - µs VBATT high to low 0.75 2 4.5 ms ICHG falling below ICHG/10 0.4 1 2.5 ms Thermal Regulation Threshold C SOFT-START AND TIMING TSS Charge Current Soft-Start Interval TRECHARGE Recharge Comparator Filter Time TTERM Termination Comparator Filter Time ICHG=0A to full charging current TA=25 oC REGULATOR OUTPUT VOLTAGE VLDOOUT LDO Regulator Output Voltage 3.234 3.300 3.366 V REGLINE LDO Regulator Line Regulation VLDOOUT+0.5V<VLDOIN<6V - 2 10 mV REGLODE LDO Regulator Load Regulation 0mA<ILDO<150mA - 15 30 mV VDROP LDO Regulator Dropout Voltage ILDO=150mA - 200 300 mV PSRR LDO Regulator Power Supply Ripple Rejection Ratio f=1kHz, ILDO=10mA 30 40 - dB LDO Regulator Output Noise f=22KHz to 80kHz, ILDO=10mA - 200 250 µVRMS 200 300 400 mA 40 50 60 mA Regulator Thermal Shutdown Temperature - 135 - o Regulator Thermal Shutdown Hysteresis - 20 - o REGULATOR PROTECTION ILIM LDO Regulator Output Current Limit ISHORT LDO Regulator Short Circuit Current Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 VLDOOUT=0V 4 C C www.anpec.com.tw APL3207 Typical Operating Characteristics (Refer to the section “Typical Application Circuits”, VIN=5V, VLDOIN=5V, TA=25oC, unless otherwise specified) ISET Pin Voltage vs. Junction Temperature ISET Pin Voltage vs. VIN Supply Voltage 1.015 1.04 VBATT = 4V VIN = 5V 1.03 RSET = 10K VBATT = 4V ISET PinVoltage (V) ISET Pin Voltage (V) 1.010 1.005 1.000 0.995 0.990 1.02 RSET = 10K 1.01 1 0.99 0.98 0.97 0.96 0.985 4 4.5 5 5.5 6 -50 -25 VIN Supply Voltage (V) 4.24 BATT Charge Termination Voltage (V) BATT Charge Termination Voltage (V) BATT Charge Termination Voltage vs. VIN Supply Voltage 4.22 RSET = 10K 4.2 4.18 4.16 4.5 5 5.5 6 6.5 4.3 50 75 100 VIN = 5V RSET = 10K 4.25 4.2 4.15 7 -25 0 25 50 75 100 Junction Temperature ( oC ) VIN Supply Voltage (V) STAT Pin Current vs. Junction Temperature STAT Pin I-V Curve 20 30 25 16 STAT Pin Current (mA) STAT Pin Sink Current (mA) 25 BATT Charge Termination Voltage vs. Junction Temperature 4.1 -50 4.15 4 0 JunctionTemperature (oC) 20 15 10 VIN = 5V VBATT = 4V 5 0 12 8 VIN = 5V VBATT = 4V VSTAT = 1V 4 0 0 1 2 3 4 5 -50 STAT Pin Voltage (V) Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 -25 0 25 50 75 100 Junction Temperature (oC ) 5 www.anpec.com.tw APL3207 Typical Operating Characteristics (Cont.) (Refer to the section “Typical Application Circuits”, VIN=5V, VLDOIN=5V, TA=25oC, unless otherwise specified) Precharge Threshold Voltage vs. Junction Temperature Recharge Threshold Voltage vs. Junction Temperature 4.11 VIN = 5V RSET = 10K 3.1 Recharge Threshold Voltage (V) Precharge Threshold Voltage (V) 3.2 3 2.9 2.8 2.7 2.6 2.5 -50 -25 0 25 50 75 VIN = 5V 4.09 RSET = 10K 4.07 4.05 4.03 4.01 3.99 -50 100 Junction Temperature ( oC) 500 500 Charge Current (mA) Charge Current (mA) 600 400 TA=40 oC TA=70 oC VIN = 5V, RSET = 2K 100 75 100 ( oC ) 300 TA=40 oC 200 TA=70 oC VBATT = 4V, RSET = 2K 100 VLDOIN=VIN, ILDO=150mA 0 0 2.7 3 3.3 3.6 3.9 4.2 4 4.5 4.5 5 5.5 6 BATT Voltage (V) VIN Supply Voltage (V) Charge Current vs. Ambient Temperature Power FET On Resistance vs. Junction Temperature 600 6.5 Power FET On Resistance (Ohm) 1.5 RSET = 2K 500 Charge Current (mA) 50 400 VLDOIN=5V, ILDO=150mA 400 300 25 Charge Current vs. VIN Supply Voltage 600 200 0 Junction Temperature Charge Current vs. BATT Voltage 300 -25 VIN = 5V, VBATT = 4V VLDOIN=5V, ILDO=0mA 200 RSET = 10K 100 VIN = 4.2V ICHG = 0.1A 1.3 1.1 0.9 0.7 0.5 0.3 0 -50 -25 0 25 50 75 100 -50 125 Ambient Temperature (oC) Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 0 50 100 150 Junction Temperature (oC) 6 www.anpec.com.tw APL3207 Typical Operating Characteristics (Cont.) (Refer to the section “Typical Application Circuits”, VIN=5V, VLDOIN=5V, TA=25oC, unless otherwise specified) Regulator Quiescent Current vs. LDOIN Supply Voltage Regulator Output Voltage vs. LDOIN Supply Voltage 3.5 4.5 ILDO = 0mA Regulator Output Voltage (V) Regulator Quiescent Current (µA) 5 4 3.5 3 2.5 2 1.5 1 3 ILDO = 0mA 2.5 2 1.5 1 0.5 0.5 0 0 0 1 2 3 4 5 0 6 1 LDOIN Supply Voltage (V) Regulator Dropout Voltage vs. Regulator Output Current 3.312 Regulator Output Voltage (V) Regulator Dropout Voltage (V) 200 160 120 TA = 25 oC ICHG = 0mA 80 40 25 50 75 100 3 4 5 6 125 150 Regulator Output Voltage vs. Junction Temperature 3.31 3.308 3.306 ILDO = 0mA 3.304 3.302 3.3 3.298 3.296 -40 0 0 2 LDO Supply Voltage (V) -20 0 20 40 60 80 100 120 Junction Temperature ( oC) Regulator Output Current (mA) Regulator PSRR vs. Frequency +0 100mA -10 Regulator PSRR(dB) -20 -30 50mA -40 -50 -60 1mA -70 -80 -90 -100 10 100 1K 10K 100K Frequency (Hz) Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 7 www.anpec.com.tw APL3207 Operating Waveforms (Refer to the section “Typical Application Circuits”, the test condition is VIN=5V, TA=25oC, unless otherwise specified) Charger Start-up (Reconnecting RSET to GND) VIN Power On VSET VIN 2 1 1 3 VSTAT ICHG ICHG 4 4 44 RSET = 2K, VBATT=3.8V CH2: VSET, 2V/div, DC CH3: VSTAT, 5V/div, DC CH4: ICHG, 0.2A/div, DC TIME: 0.1ms/div RSET = 2K, VBATT=3.8V CH1: VIN, 2V/div, DC CH4: ICHG, 0.2A/div, DC TIME: 0.1ms/div Charger Shutdown (Disconnecting RSET from GND) LDO Line Transient Response VSET VLDOIN=4 to 5V 1 2 VSTAT 3 3 VLDOOUT=3.3V ICHG 4 ILDO = 10mA CH1: VLDOIN, 1V/div, AC CH3: VLDOOUT, 200mV/div, AC TIME: 0.1ms/div RSET = 2K, VBATT=3.8V CH2: VSET, 2V/div, DC CH3: VSTAT, 5V/div, DC CH4: ICHG, 0.2A/div, DC TIME: 0.1ms/div Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 8 www.anpec.com.tw APL3207 Operating Waveforms (Cont.) (Refer to the section “Typical Application Circuits”, the test condition is VLDOIN=5V, TA=25oC, unless otherwise specified) LDO Load Transient Response VLDOOUT 1 3 ILDO=1mA to 150mA VLDOIN = 5V CH1: VLDOOUT, 50mV/div, AC CH3: ILDO, 50mA/div, DC TIME: 0.5ms/div Pin Description PIN FUNCTION NO. NAME 1 VIN 2 BATT Charger Output Pin. Connect this pin to the positive terminal of a Li+ battery. 4 LDOIN LDO Regulator Input Supply Pin. Provides power to the regulator, VLDOIN can range from 3.6V to 6.5V and should be bypassed with at least a 1µF capacitor. 5 NC 6,7 LDOOUT LDO Regulator Output. Fixed at 3.3V output, sourcing up to 150mA. The pin6 and pin7 must be connected together. 8 STAT Open-Drain Charge Status Output Pin. When the battery is charging, the STAT pin is pulled low by an internal switch. In other states the STAT pin is in a high impedance state. 3,9 GND Ground. Pin3 and pin9 must be connected together. 10 ISET Charging Current Setting and Shutdown Pin. Connecting a resistor from this pin to GND set the charge current when the VIN is powering the charger. Disconnecting the RSET from GND allows an internal 2.5µA current to pull the ISET pin high, and when the ISET pin voltage exceeds the shutdown threshold voltage, the charger enters shutdown mode. GND Ground. Connect the bottom side metal pad to back side ground plane through several vias to improve power dissipation. Bottom Pad Charger Input Supply Pin. Provides power to the charger, VIN can range from 4.35V to 6.5V and should be bypassed with at least a 1µF capacitor. No Connection. Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 9 www.anpec.com.tw APL3207 Block Diagram VIN BATT Constant Voltage Loop Amp. UVLO 1.21V Charge Control Circuit SHUTDOWN Thermal Reglation STAT Precharge Comp VIN 2.5µA Constant Current Loop Amp. 2.9V 1V 1.21V ISET 0.1V LDOIN Thermal Shutdown & Current Limit VREF MOS Driver LDOOUT GND Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 10 www.anpec.com.tw APL3207 Typical Application Circuit USB/Adapter 5V 1 BATT VIN 2 C1 LED C2 1000 V Li+ ICHG = Battery RSET 10K to 100K 8 4 BATT ISET STAT 10 RSET:2K to 10K ON Q1 LDOIN LDOOUT 6,7 OFF 3.3V C4 C3 GND 3,9 The input power of LDO regulator is supplied by battery USB/Adapter 5V 1 BATT VIN 2 C2 C1 LED Li+ ICHG = Battery 1000 V RSET 10K to 100K 8 Schottky Diode 4 ISET STAT 10 RSET:2K to 10K ON Q1 LDOIN LDOOUT 6,7 3.3V OFF C4 C3 GND Q2 3,9 10K to 100K BATT When USB is present, the input power of LDO is supplied by USB Designation C1, C3, C4 C2 Q1 Q2 Description 1µF, 10V, X5R, 0402 Murata GRM155R61A105KE15 2.2µF, 6.3V, X5R, 0402 Murata GRM155R60J225ME15 SOT-23, N-Channel MOSFET ANPEC APM2300CA SOT-23, P-Channel MOSFET ANPEC APM2301CA Murata website: www.murata.com Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 11 www.anpec.com.tw APL3207 Function Description Charge Cycle Charge Termination Detection and Recharge When the APL3207 is powered with a battery connected, Charging is terminated when ICHG falls to 10% of the full the IC firstly detects if the cell voltage is ready for full charge current. If the battery voltage is below pre-charge charge current set by RSET and the charger is in voltage mode (VBATT is nearly 4.2V). The charge termination is threshold (2.9V typ.), the device supplies 1/10 the programmed charge current. On the contrary, when the bat- detected by monitoring the ISET pin. When the ISET pin voltage falls below 0.1V and takes longer than TTERM (1ms, tery voltage is over the pre-charge threshold, the device supplies the full charge current, as programmed by RSET typical), charging is terminated. The STAT output keeps high state when the charger operates in standby mode. from the ISET pin to the GND. When the battery voltage approaches the 4.2V termination voltage, the device en- After charge termination, the battery voltage is monitored by the APL3207 continuously. If the battery voltage drops ters constant-voltage mode and the full charge current gradually decreases until the charge current drops to the below 4.05V and takes longer than TRECHARGE (2ms, typical), a new charge cycle starts to recharge the battery. termination current threshold, which is equal to 1/10 full charge current, and the IC stops charging (See Figure 1). Manual Shutdown ICHG ICHG The ISET pin provides two functions: connecting the re- VBATT 1C VBATT sistor RSET from the ISET pin to the GND to set the full charge current; and disconnecting the RSET from the GND 4.2V to shut down the charging device. Once the R is SET 4.05V disconnected, an internal 2.5µA current will pull the ISET pin high. When the ISET pin voltage reaches the 1.21V shutdown threshold voltage, the charging device enters 3.0V current is below 1µA. Reconnecting RSET to the GND enables the charger to operate normally. The STAT output is 0.1C Precharge Full Charge shutdown mode. In shutdown mode, the charging stops, the VIN supply current drops to 25µA and the battery drain Constant Voltage Mode in high state when the charger is in shutdown mode. Figure 1. Typical Charging Profile Thermal Regulation Full Charge Current Setting The APL3207 is thermally regulated to keep the junction The full charge current is programmed by connecting a resistor from the the ISET pin to the ground. The full charge temperature at 120°C. When the junction temperature reaches 120°C, the charger does not shut down but re- current is 1000 times of the current flowing out of the ISET pin and can be calculated by the following equation: duces charge current to keep the junction temperature at 120°C. This feature protects the APL3207 from exces- ICHG = sive temperature and allows the charger to operate with maximum power dissipation by reducing the charge cur- K SET × VSET RSET where: VSET is ISET regulation voltage (1V, typcial). KSET is the charge current set factor (1000, typical). rent and optimizes the board design for compact size and typical thermal conditions. The charge current set factor and the ISET regulation voltage are shown in the Electrical Characteristics. The ISET The STAT is an open-drain output. When the charger is in charge mode, the STAT output is in pull-low state. Until the charge current drops to the termination current threshold, the charging stops, and the STAT output is in high impedance state. Charge Status Output (STAT) regulation voltage is reduced by the thermal regulation function. Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 12 www.anpec.com.tw APL3207 Function Description (Cont.) Charge Status Output (STAT) (Cont.) STAT Output Low High Mode VIN VBATT VIN>VUVLO & VBATT<4.2V Charge mode VIN>VBATT+ VASD Shutdown mode VIN>VUVLO & VIN>VBATT+ VBATT>4.2V Standby mode VASD VIN<VUVLO Battery is or Sleep mode VIN<VBATT+ connected VASD VSET 0.1V<VSET<1.2V VSET>1.2V - Table1. STAT Pin Summary LDO Regulator The APL3207 has been built in a regulator whose output voltage is fixed at 3.3V. When the system is powered by a battery, the regulator is fully powered by the battery; however, when the battery is charged, the regulator input is switched to the USB or adapter (by using external circuit) and powered by the USB or adapter, which reduces the charging time. Regulator Current Limit and Short Circuit The APL3207 includes a current limit circuitry for LDO regulator. The current limit circuitry senses the output current and limits the maximum output current to prevent the APL 3207 and external loads frorm being damaged. The point where limitation occurs is ILDO=300mA (typical). When the output is shortened to the ground, the regulator reduces the current-limit threshold down to 50mA (typical). The output can be shortened to the ground for an indefinite amount of time without damaging the part. Regulator Thermal Protection The LDO regulator has a built-in thermal protection function. When the junction temperature exceeds +135oC, the thermal sensor generates a logic signal to turn off the regulator which makes the die cool down. When the junction temperature cools down by 20oC, the thermal sensor turns the regulator on again, resulting in a pulsed output during continuous thermal protection. Thermal protection is designed to protect the IC in the event of fault conditions. Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 13 www.anpec.com.tw APL3207 Application Information Input Capacitors Thermal Consideration The APL3207 requires proper input capacitors to supply The most common measurement of package thermal surge current during stepping load transients to prevent the input rail from dropping. The 1µF ceramic capacitors performance is thermal resistance measured from the device junction to the air surrounding the package sur- are recommended to place on the input supply pins (VIN and VLDOIN) to the GND. Place the capacitors as close face (θJA ). The θJA can be calculated by the following equation: T − TA θJA = J PD where: TJ= device junction temperature, maximum TJ=120°C as possible to the input supply pins for well operation. In some start-up conditions, it may necessary to protect the device against a hot plug input voltage. Adding a 6V input zener diode between the input supply pins and the GND TA= ambient temperature PD= device power dissipation clamps the input voltage peak. The device power dissipation, PD, is a function of the charge rate, the LDO output current and the voltages drop Output Capacitors The APL3207 has two output pins, which are charger output pin BATT and regulator 3.3V output pin LDOOUT. across the internal FETs. It can be calculated by the following equation: The output capacitor of charger is recommended to use 2.2µF ceramic capacitor to ensure the battery charge PD = ( VIN − VBATT ) × ICHG + ( VLODIN − VLDOUT ) × ILDO stability. PCB Layout Consideration The output capacitor of regulator also can use ceramic capacitor, and its proper value is between 1µF and 2.2µF, Connecting the battery to BATT as close as possible provides accurate battery voltage sensing. The input and ESR must above 10mΩ. Large output capacitor values can reduce noise and improve load-transient response, output decoupling capacitors and the programmed resistor RSET should be placed as close as possible to the stability, and PSRR. With X5R and X7R dielectrics, 1µF is sufficient at all operating temperatures. device. The high current paths (VIN and LDOIN pins for input and BATT and LDOOUT pins for output) must be STAT Pin short and wide to minimize voltage drop. The STAT pin can be used to drive a LED or communicate with the host processor to show the charge status. When the status is displayed by a LED, which has a current rating less than 5mA, a resistor should be selected to connect LED in series, for programming at the desired current value. The resistor is calculated by the following equation: RLED = VIN − VLED − ON ILED When STAT pin is monitored by a processor, there should be a 10kΩ to 100kΩ pull-up resistor to connect the STAT pin and the supply voltage of the processor. Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 14 www.anpec.com.tw APL3207 Package Information DFN3x3-10 D E A b Pin 1 A1 D2 A3 L E2 Pin 1 Corner e S Y M B O L DFN3x3-10 MILLIMETERS INCHES MIN. MAX. MIN. MAX. A 0.80 1.00 0.031 0.039 A1 0.00 0.05 0.000 0.002 0.012 A3 0.20 REF 0.008 REF b 0.18 0.30 0.007 D 2.90 3.10 0.114 0.122 D2 2.20 2.70 0.087 0.106 E 2.90 3.10 0.114 0.122 E2 1.40 1.75 0.055 0.069 0.50 0.012 e 0.50 BSC L 0.30 K 0.20 0.020 BSC 0.020 0.008 Note : 1. Followed from JEDEC MO-229 VEED-5. Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 15 www.anpec.com.tw APL3207 Carrier Tape & Reel Dimensions P0 P2 P1 A B0 W F E1 OD0 K0 A0 A OD1 B B T SECTION A-A SECTION B-B H A d T1 Application A H 178.0±2.00 50 MIN. DFN3x3-10 T1 C d D W E1 12.4+2.00 13.0+0.50 1.5 MIN. 20.2 MIN. 12.0±0.30 1.75±0.10 -0.00 -0.20 P0 P1 P2 D0 D1 4.0±0.10 8.0±0.10 2.0±0.05 1.5+0.10 -0.00 1.5 MIN. T A0 B0 F 5.5±0.05 K0 0.6+0.00 -0.40 3.30±0.20 3.30±0.20 1.30±0.20 (mm) Devices Per Unit Package Type Unit Quantity DFN3x3-10 Tape & Reel 3000 Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 16 www.anpec.com.tw APL3207 Taping Direction Information DFN3x3-10 USER DIRECTION OF FEED Classification Profile Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 17 www.anpec.com.tw APL3207 Classification Reflow Profiles Profile Feature Sn-Pb Eutectic Assembly Pb-Free Assembly 100 °C 150 °C 60-120 seconds 150 °C 200 °C 60-120 seconds 3 °C/second max. 3 °C/second max. 183 °C 60-150 seconds 217 °C 60-150 seconds See Classification Temp in table 1 See Classification Temp in table 2 Time (tP)** within 5°C of the specified classification temperature (Tc) 20** seconds 30** seconds Average ramp-down rate (Tp to Tsmax) 6 °C/second max. 6 °C/second max. 6 minutes max. 8 minutes max. Preheat & Soak Temperature min (Tsmin) Temperature max (Tsmax) Time (Tsmin to Tsmax) (ts) Average ramp-up rate (Tsmax to TP) Liquidous temperature (TL) Time at liquidous (tL) Peak package body Temperature (Tp)* Time 25°C to peak temperature * Tolerance for peak profile Temperature (Tp) is defined as a supplier minimum and a user maximum. ** Tolerance for time at peak profile temperature (tp) is defined as a supplier minimum and a user maximum. Table 1. SnPb Eutectic Process – Classification Temperatures (Tc) Package Thickness <2.5 mm ≥2.5 mm Volume mm <350 235 °C 220 °C 3 Volume mm ≥350 220 °C 220 °C 3 Table 2. Pb-free Process – Classification Temperatures (Tc) Package Thickness <1.6 mm 1.6 mm – 2.5 mm ≥2.5 mm Volume mm <350 260 °C 260 °C 250 °C 3 Volume mm 350-2000 260 °C 250 °C 245 °C 3 Volume mm >2000 260 °C 245 °C 245 °C 3 Reliability Test Program Test item SOLDERABILITY HOLT PCT TCT HBM MM Latch-Up Method JESD-22, B102 JESD-22, A108 JESD-22, A102 JESD-22, A104 MIL-STD-883-3015.7 JESD-22, A115 JESD 78 Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 18 Description 5 Sec, 245°C 1000 Hrs, Bias @ Tj=125°C 168 Hrs, 100%RH, 2atm, 121°C 500 Cycles, -65°C~150°C VHBM≧2KV VMM≧200V 10ms, 1tr≧100mA www.anpec.com.tw APL3207 Customer Service Anpec Electronics Corp. Head Office : No.6, Dusing 1st Road, SBIP, Hsin-Chu, Taiwan Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 2F, No. 11, Lane 218, Sec 2 Jhongsing Rd., Sindian City, Taipei County 23146, Taiwan Tel : 886-2-2910-3838 Fax : 886-2-2917-3838 Copyright ANPEC Electronics Corp. Rev. A.3 - Sep., 2012 19 www.anpec.com.tw