APL3208A/B/C Li+ Charger Protection IC with Integrated P-MOSFET Features General Description * Input Over-Voltage Protection * Current-Limit Protection The APL3208A/B/C provides complete Li+ charger protection against Input over-voltage, battery over-voltage, * Battery Over-Voltage Protection * High Immunity of False Triggering * High Accuracy Protection Threshold * A Built-In P-MOSFET * Available with 3 Versions of Charging Current: and the charge current limit. When the input OVP or the battery OVP is over the threshold, the IC removes the power from the charging system by turning off an internal switch. When the current via the internal switch surpasses the current limit threshold, the current will be clamped in a constant level to provide a constant current for battery 450mA, 550mA, 650mA charging usage. All protections also have deglitch time against false triggering due to voltage spikes or current * Thermal Shutdown Protection * Available in TDFN2x2-8 and TSOT-23-6A Packages * "Lithium-Safe" Criteria * Lead Free and Green Devices Available transients. The APL3208A/B/C integrates a P-MOSFET with the body diode reverse protection to replace the external power bipolar transistor and Schottky diode for charger function (RoHS Compliant) of the Infineon ULC2 mobile phones. When the CHG_DET voltage drops below VBAT+20mV, the internal power se- Applications * lect circuit will reverse the body diode's terminal to prevent a reverse current flowing from the battery back to the CHG_DET pin. The APL3208A/B/C provides complete Li+ charger pro- Cell Phones for Infineon tections and save the external MOSFET and Schottky diode for the Infineon ULC2 mobile phones. The above Pin Configuration ACIN 1 ACIN 2 GND 3 VBAT 4 EP features and small package make the APL3208A/B/C an ideal part for cell phones applications. 8 OUT 7 OUT 6 CHG_DET 5 CHG_SW Simplified Application Circuit TDFN2x2-8 (Top View) EP 5V Adapter or USB = Exposed Pad (Connected to the ground plane for better heat dissipation) OUT 1 6 ACIN CHG_DET 2 5 GND CHG_SW 3 4 VBAT R VCHG_DET ACIN CHG_DET APL3208A/B/C CHG_SW OUT GND CHG_SW VBAT Li+ Battery TSOT-23-6A (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.2 - Nov., 2009 1 www.anpec.com.tw APL3208A/B/C Ordering and Marking Information APL3208A APL3208B APL3208C Package Code QB : TDFN2x2-8 CT : TSOT-23-6A Operating Ambient Temperature Range I : -40 to 85 oC Handling Code TR : Tape & Reel Assembly Material G : Halogen and Lead Free Device Assembly Material Handling Code Temperature Range Package Code APL3208A QB: L08A X X - Date Code APL3208B QB: L08B X X - Date Code APL3208C QB: L08C X X - Date Code APL3208A CT: L8AX X - Date Code APL3208B CT: L8BX X - Date Code APL3208C CT: L8CX X - 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-020D 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 (Note 1) Symbol VACIN Parameter ACIN Input Voltage (ACIN to GND) Rating Unit -0.3 ~ 30 V VCHG_DET CHG_DET to GND Voltage -0.3 ~ 7 V VCHG_SW CHG_SW to GND Voltage -0.3 ~ VCHG_DET V VBAT VBAT to GND Voltage -0.3 ~ 7 V VOUT OUT to GND Voltage -0.3 ~ 7 V IOUT TJ TSTG TSDR OUT Output Current 1.5 Maximum Junction Temperature 150 o -65 ~ 150 o 260 o Storage Temperature Maximum Lead Soldering Temperature, 10 Seconds A C C C Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Thermal Characteristics Symbol Parameter Junction-to-Ambient Resistance in Free Air Typical Value Unit (Note 2) JA TDFN2x2-8 80 TSOT-23-6A 235 o C/W Note 2: JA is measured with the component mounted on a high effective thermal conductivity test board in free air. The exposed pad of TDFN2x2-8 is soldered directly on the PCB. Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 2 www.anpec.com.tw APL3208A/B/C Recommended Operating Conditions (Note 3) Symbol VACIN Parameter Range ACIN Input Voltage Unit 4.5 ~ 5.5 V TA Ambient Temperature -40 ~ 85 o TJ Junction Temperature -40 ~ 125 o C C Note 3: Refer to the typical application circuit Electrical Characteristics Unless otherwise specified, these specifications apply over VACIN=5V, VBAT=3.8V and TA= -40 ~ 85 oC. Typical values are at TA=25oC. Symbol Parameter Test Conditions APL3208A/B/C Min. Typ. Max. Unit ACIN INPUT CURRENT AND POWER-ON-RESET (POR) IACIN ACIN Supply Current IOUT=0A, ICHG_DET=0A VACIN ACIN POR Threshold VACIN rising ACIN POR Hysteresis TB(ACIN) ACIN Power-On Blanking Time - 250 350 A 2.4 - 2.8 V 200 250 300 mV - 8 - ms - 500 - INTERNAL SWITCH ON RESISTANCE CHG_DET Discharge On Resistance INPUT OVER-VOLTAGE PROTECTION (OVP) VOVP Input OVP Threshold VACIN rising 6 6.17 6.35 V 200 300 400 mV Input OVP Propagation Delay - - 1 s Input OVP Recovery Time - 8 - ms APL3208A, TA=25C 400 450 500 APL3208B, TA=25C 500 550 600 APL3208C, TA=25C 600 650 700 VBAT rising 4.32 4.35 4.38 V 220 270 320 mV - - 20 nA - 176 - s VCHG_DET from low to high, P-MOSFET is controlled by CHG_SW - 120 - VCHG_DET from high to low, P-MOSFET is off - 20 - OUT Input Current VCHG_DET=0V, VOUT=4.2V, CHG_SW =GND - - 1 A CHG_SW Leakage Current VACIN=VCHG_DET= VOUT=5V, VCHG_SW=0V - 7.5 13 A OUT Leakage Current VACIN=VCHG_DET= VCHG_SW =5V, VOUT=0V - - 1 A Input OVP Hysteresis TON(OVP) CURRENT-LIMIT PROTECTION ILIM Current Limit Threshold mA BATTERY OVER-VOLTAGE PROTECTION VBOVP Battery OVP Threshold Battery OVP Hysteresis IVBAT VBAT Pin Leakage Current TB(BOVP) Battery OVP Blanking Time VBAT = 4.4V INTERNAL P-MOSFET (CHG_DET, OUT AND CHG_SW PINS) VCHG_DET-VBAT Lockout Threshold Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 3 mV www.anpec.com.tw APL3208A/B/C Electrical Characteristics (Cont.) Unless otherwise specified, these specifications apply over VACIN=5V, VBAT=3.8V and TA= -40 ~ 85 oC. Typical values are at TA=25oC. Symbol Parameter Test Conditions APL3208A/B/C Unit Min. Typ. Max. P-MOSFET Input Capacitance - 200 - pF CHG_SW Input Resistance - 15 - - 160 - C - 40 - C INTERNAL P-MOSFET (CHG_DET, OUT AND CHG_SW PINS) (CONT.) OVER-TEMPERATURE PROTECTION (OTP) TOTP Over-Temperature Threshold TJ rising Over-Temperature Hysteresis Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 4 www.anpec.com.tw APL3208A/B/C Operating Waveforms The test condition is VACIN=5V, VBAT=3.8V, TA= 25oC unless otherwise specified. Normal Power On OVP at Power On VACIN VACIN 1 VOUT 1 VCHG_DET 2 VCHG_DET VOUT 2,3 IOUT 4 3 CACIN =1F, COUT =1F, VCHG_SW = VCHG_DET CH1: VACIN, 5V/Div, DC CH2: VOUT, 2V/Div, DC CH3: VCHG_DET, 2V/Div, DC CH4: I OUT, 0.2A/Div, DC TIME: 2ms/Div CACIN =1F, COUT =1F CH1: VACIN, 10V/Div, DC CH2: VCHG_DET, 1V/Div, DC CH3: VOUT, 2V/Div, DC TIME: 2ms/Div Input Over-Voltage Protection Recovery from Input OVP VACIN VACIN 1 1 VCHG_DET VCHG_DET 2 2 VOUT 3 VACIN= 12V to 5V, VCHG_SW = VCHG_DET CACIN =1F, COUT =1F CH1: VACIN, 5V/Div, AC CH2: VCHG_DET, 2V/Div, DC CH3: VOUT, 2V/Div, DC TIME: 2ms/Div VACIN =5V to 12V, VCHG_SW = 0V, No Load CACIN =1F, COUT =1F CH1: VACIN, 5V/Div, AC CH2: VCHG_DET, 2V/Div, DC TIME:20s/Div Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 5 www.anpec.com.tw APL3208A/B/C Operating Waveforms (Cont.) The test condition is VACIN=5V, VBAT=3.8V, TA= 25oC unless otherwise specified. Battery Over-Voltage Protection Battery Over-Voltage Protection VBAT VBAT 1 1 VCHG_DET VCHG_DET 2 2 VBAT = 3.6V to 4.4V CACIN=1F, COUT =1F CH1: VBAT, 2V/Div, DC CH2: VCHG_DET, 2V/Div, DC TIME: 200s/Div VBAT = 3.6V to 4.4V to 3.6V CACIN =1F, COUT =1F CH1: VBAT, 2V/Div, DC CH2: VCHG_DET, 2V/Div, DC TIME: 50ms/Div Pin Description PIN NO. FUNCTION NAME TDFN2x2-8 TSOT-23-6A 1, 2 6 ACIN Power Supply Input. Connect this pin to external DC supply. Bypass to GND with a 1F (minimum) ceramic capacitor. 3 5 GND Ground Terminal. 4 4 VBAT Battery Voltage Sense Input. Connect this pin to pack positive terminal through a resistor. 5 3 CHG_SW Internal P-MOSFET Gate Input. 6 2 CHG_DET Output Pin. This pin provides supply voltage to the Infineon ULC2 input. Bypass to GND with a 1F (minimum) ceramic capacitor. 7, 8 1 OUT Output Pins. These pins provide supply source current in series with a resistor to battery. Exposed Pad - EP Exposed Thermal Pad. Must be electrically connected to the GND pin. Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 6 www.anpec.com.tw APL3208A/B/C Block Diagram ACIN CHG_DET POR OUT Charge Pump ACIN OVP Gate Driver and Control Logic VBAT OVP 0.5V CHG_SW 1V GND VBAT Thermal Shutdown Typical Application Circuit 5V Adapter or USB 1, 2 CACIN 1F ACIN CHG_DET 6 CHG_SW OUT GND R1 R2 2.2k 20~100k 1F APL3208A/B/C 3 CHG_DET C1 VBAT 5 C2 33nF Infineon ULC2 CHG_SW 7, 8 4 VBAT RBAT (Optional) Li+ Battery 200k Designation Description CACIN 1F, 50V, X7R, 0805 Murata GRM21BR71H105K C1 1F, 10V, X7R, 0805 Murata GRM21BR71A105K Murata website: www.murata.com Figure 1. Infineon ULC2 Application Circuit Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 7 www.anpec.com.tw APL3208A/B/C Typical Application Circuit (Cont.) 1, 2 ACIN CACIN 1F CHG_DET 6 CHG_DET COUT 1F APL3208 CHG_SW OUT 3 GND VBAT PMIC 5 CHG_SW 7, 8 4 VBAT RBAT 200k (Optional) Designation Li+ Battery Description CACIN 1F, 50V, X7R, 0805 Murata GRM21BR71H105K COUT 1F, 10V, X7R, 0805 Murata GRM21BR71A105K Murata website: www.murata.com Figure 2. General Application Circuit Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 8 www.anpec.com.tw APL3208A/B/C Function Description ACIN Power-On-Reset (POR) Over-Temperature Protection The APL3208A/B/C has a built-in power-on-reset circuit to keep the output shutting off until internal circuitry is When the junction temperature exceeds 160oC, the internal thermal sense circuit turns off the power FET and allows the device to cool down. When the device's junc- operating properly. The POR circuit has hysteresis and a de-glitch feature so that it will typically ignore undershoot tion temperature cools by 40 oC, the internal thermal sense circuit will enable the device, resulting in a pulsed transients on the input. When the input voltage exceeds the POR threshold and after 8ms blanking time, the out- output during continuous thermal protection. Thermal protection is designed to protect the IC in the event of over put voltage starts a soft-start to reduce the inrush current. temperature conditions. For normal operation, the junction temperature cannot exceed TJ=+125oC. ACIN Over-Voltage Protection (OVP) The input voltage is monitored by the internal OVP circuit. Internal P-MOSFET When the input voltage rises above the input OVP threshold, the internal FET will be turned off within 1ms to The APL3208A/B/C integrates a P-channel MOSFET with protect the connected system on OUT pin. When the input voltage returns below the input OVP threshold minus the body diode reverse protection to replace the external power bipolar transistor and Schottky diode for the Infineon the hysteresis, the FET is turned on again after 8ms recovery time. The input OVP circuit has a 200mV hyster- ULC2 mobile. The body diode reverse protection prevents a reverse current flowing from the battery back to esis and a recovery time of TON(OVP) to provide noise immunity against transient conditions. the CHG_DET pin. During power-on, when CHG_DET voltage rises above the VBAT voltage by more than Battery Over-Voltage Protection 120mV, the body diode of the P-channel MOSFET is forward biased from OUT to CHG_DET, and P-MOSFET is The APL3208A/B/C monitors the VBAT pin voltage for bat- controlled by the external CHG_SW voltage. When the tery over-voltage protection. The battery OVP threshold is internally set to 4.35V. When the VBAT pin voltage ex- CHG_DET voltage drops below VBAT+20mV, the body diode of the P-channel MOSFET is forward biased from ceeds the battery OVP threshold for a blanking time of TB , the internal power FET is turned off. When the VBAT (BOVP) CHG_DET to OUT and P-channel MOSFET is turned off. When any of input OVP, battery OVP, is detected,the inter- voltage returns below the battery OVP threshold minus the hysteresis, the FET is turned on again. The APL3208A/ nal P-channel MOSFET is also turned off. B/C has a built-in counter. When the total count of battery OVP fault reaches 16, the FET is turned off permanently, requiring a VACIN POR again to restart. Current-Limit Protection The APL3208A/B/C provides a current-limit protection function. When the current via the internal switch surpasses the current limit threshold, the current will be clamped to a constant level to provide external battery charging current. Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 9 www.anpec.com.tw APL3208A/B/C Function Description (Cont.) VOVP VPOR VACIN VCHG_DET -VBAT = 120mV VCHG_DET -VBAT = 120mV VCHG_DET VOUT CHG_SW is pulled low P-MOS Gate Control Turn Off Internal P-MOSFET Controlled by CHG_SW Controlled by CHG_SW Turn Off Internal P-MOSFET TB(ACIN) ACIN OVP TON(OVP) Figure 3. OVP Timing Diagram VBAT VBOVP VBOVP VCHG_DET -VOUT = 120mV VCHG_DET Count 13 times P-MOS Gate Controlled Control by CHG_SW Turn Off Internal P-MOSFET TB(BOVP) Controlled by CHG_SW Turn Off Internal P-OSFET TB(BOVP) Controlled by CHG_SW Turn Off Internal P-MOSFET TB(BOVP) Total count 16 times, IC is latched off Figure 4. Battery OVP Timing Diagram Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 10 www.anpec.com.tw APL3208A/B/C Application Information RBAT Selection Connect the VBAT pin to the positive terminal of battery through a resistor RBAT for battery OVP function. The RBAT limits the current flowing from VBAT to battery in case of VBAT pin is shortened to ACIN pin under a failure mode. The recommended value of RBAT is 200k. In the worse case of an IC failure, the current flowing from the VBAT pin to the battery is: (30V-3V)/ 200k =135A where the 30V is the maximum ACIN voltage and the 3V is the minimum battery voltage. The current is so small and can be absorbed by the charger system. Capacitor Selection The input capacitor is for decoupling and prevents the input voltage from overshooting to dangerous levels. In the AC adapter hot plug-in applications or load current step-down transient, the input voltage has a transient spike due to the parasitic inductance of the input cable. A 50V, X7R, dielectric ceramic capacitor with a value between 1F and 4.7F placed close to the ACIN pin is recommended. The output capacitor of CHG_DET is for CHG_DET voltage decoupling. And also can be as the input capacitor of the charging circuit. At least, a 1F, 10V, X7R capacitor is recommended. Layout Consideration In some failure modes, a high voltage may be applied to the device. Make sure the clearance constraint of the PCB layout must satisfy the design rule for high voltage. The exposed pad of the TDFN2x2-8 performs the function of channeling heat away. It is recommended that connect the exposed pad to a large copper ground plane on the backside of the circuit board through several thermal vias to improve heat dissipation. The input and output capacitors should be placed close to the IC. The high current traces like input trace and output trace must be wide and short. Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 11 www.anpec.com.tw APL3208A/B/C Package Information TDFN2x2-8 A b E D D2 A1 E2 A3 L Pin 1 Corner e S Y M B O L MIN. MAX. MIN. MAX. A 0.70 0.80 0.028 0.031 A1 0.00 0.05 0.000 0.002 TDFN2x2-8 MILLIMETERS A3 INCHES 0.20 REF 0.008 REF b 0.18 0.30 0.007 0.012 D 1.90 2.10 0.075 0.083 0.063 D2 1.00 1.60 0.039 E 1.90 2.10 0.075 0.083 1.00 0.024 0.039 0.45 0.012 E2 0.60 e L 0.50 BSC 0.30 0.020 BSC 0.018 Note : 1. Follow from JEDEC MO-229 WCCD-3. Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 12 www.anpec.com.tw APL3208A/B/C Package Information TSOT-23-6A D e E E1 SEE VIEW A b c 0.25 A GAUGE PLANE SEATING PLANE L A1 A2 e1 VIEW A S Y M B O L TSOT-23-6A INCHES MILLIMETERS MIN. MAX. 0.70 A1 A2 A MIN. MAX. 1.00 0.028 0.039 0.01 0.10 0.000 0.004 0.70 0.90 0.028 0.035 0.020 b 0.30 0.50 0.012 c 0.08 0.20 0.003 0.008 D 2.70 3.10 0.106 0.122 E 2.60 3.00 0.102 0.118 E1 1.40 1.80 0.055 0.071 e 0.95 BSC e1 1.90 BSC L 0 0.037 BSC 0.075 BSC 0.30 0.60 0 8 0.012 0.024 0 8 Note : Dimension D and E1 do not include mold flash, protrusions or gate burrs. Mold flash, protrusion or gate burrs shall not exceed 10 mil per side. Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 13 www.anpec.com.tw APL3208A/B/C 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 TDFN2x2-8 Application TSOT-23-6A A H T1 C d D W E1 F 178.02.00 50 MIN. 8.4+2.00 -0.00 13.0+0.50 -0.20 1.5 MIN. 20.2 MIN. 8.00.20 1.750.10 3.500.05 P0 P1 P2 D0 D1 T A0 B0 K0 1.5 MIN. 0.6+0.00 -0.4 3.35 MIN 3.35 MIN 1.300.20 4.00.10 4.00.10 2.00.05 1.5+0.10 -0.00 A H T1 C d D W E1 F 178.02.00 50 MIN. 8.4+2.00 -0.00 13.0+0.50 -0.20 1.5 MIN. 20.2 MIN. 8.00.30 1.750.10 3.50.05 P0 P1 P2 D0 D1 T A0 B0 K0 4.00.10 4.00.10 2.00.05 1.5+0.10 -0.00 1.0 MIN. 0.6+0.00 -0.40 3.200.20 3.100.20 1.500.20 (mm) Devices Per Unit Package Type Unit Quantity TDFN2x2-8 Tape & Reel 3000 TSOT-23-6A Tape & Reel 3000 Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 14 www.anpec.com.tw APL3208A/B/C Taping Direction Information TDFN2x2-8 USER DIRECTION OF FEED TSOT-23-6A USER DIRECTION OF FEED AAAX AAAX Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 AAAX AAAX 15 AAAX AAAX AAAX www.anpec.com.tw APL3208A/B/C Classification Profile 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. 3C/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 5C 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 25C 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. Copyright ANPEC Electronics Corp. Rev. A.2 - Nov., 2009 16 www.anpec.com.tw APL3208A/B/C Classification Reflow Profiles (Cont.) 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 Description 5 Sec, 245C 1000 Hrs, Bias @ 125C 168 Hrs, 100%RH, 2atm, 121C 500 Cycles, -65C~150C VHBM2KV VMM200V 10ms, 1tr100mA Customer Service Anpec Electronics Corp. Head Office : No.6, Dusing 1st Road, SBIP, Hsin-Chu, Taiwan, R.O.C. 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.2 - Nov., 2009 17 www.anpec.com.tw