Stand-Alone Linear Li-Ion / Li-Polymer Charge …

1 2009 Microchip Technology 1 MCP73833/4 Features Complete Linear Charge Management Controller- Integrated Pass Transistor- Integrated Current Sense- Integrated Reverse Discharge Protection Constant Current / Constant Voltage Operation with Thermal Regulation High Accuracy Preset Voltage Regulation:- , , , or , + Programmable Charge Current: 1A Maximum Preconditioning of Deeply Depleted cells - Selectable Current Ratio- Selectable Voltage Threshold Automatic End-of- Charge Control- Selectable Current Threshold- Selectable Safety Time Period Automatic Recharge- Selectable Voltage Threshold Two Charge Status Outputs Cell Temperature Monitor Low-Dropout Linear Regulator Mode Automatic Power-Down when Input Power Removed Under Voltage Lockout Numerous Selectable Options Available for a Variety of Applications:- Refer to Section Electrical Characteristics for Selectable Options- Refer to the Product Identification System for Standard Options Available Packages.

2 - DFN-10 (3 mm x 3 mm)- MSOP-10 Applications Lithium-Ion / Lithium-Polymer Battery Chargers Personal Data Assistants Cellular Telephones Digital Cameras MP3 Players Bluetooth Headsets USB ChargersDescriptionThe MCP73833/4 is a highly advanced Linear chargemanagement controller for use in space-limited, costsensitive applications. The MCP73833/4 is available ina 10-Lead, 3 mm x 3 mm DFN package or a 10-Lead,MSOP package. Along with its small physical size, thelow number of external components required makesthe MCP73833/4 ideally suited for portableapplications. For applications charging from a USBport, the MCP73833/4 can adhere to all thespecifications governing the USB power MCP73833/4 employs a constant current/constantvoltage Charge algorithm with selectable precondition-ing and Charge termination.

3 The constant voltageregulation is fixed with four available options: , , , or , to accomodate new, emergingbattery charging requirements. The constant currentvalue is set with one external resistor. The MCP73833/4 limits the Charge current based on die temperatureduring high power or high ambient conditions. Thisthermal regulation optimizes the Charge cycle timewhile maintaining device options are available for the preconditioningthreshold, preconditioning current value, chargetermination value, and automatic recharge preconditioning value and Charge terminationvalue are set as a ratio, or percentage, of theprogrammed constant current value. Preconditioningcan be set to 100%. Refer to Section ElectricalCharacteristics for available options and the Product Indentification System for MCP73833/4 is fully specified over the ambienttemperature range of -40 C to +85 Types DFN-10 MSOP-10 VDDSTAT1 STAT2 VSSVBATTHERMPG(TE)PROG23459876 VDDVBAT110 STAT1 VDDSTAT2 VBATTHERM123410987PG(TE)VBATVDDEP1156 PROGVSSS tand-Alone Linear Li-Ion / Li-Polymer ChargeManagement ControllerMCP73833/4DS22005B-page 2 2009 Microchip Technology ApplicationFunctional Block DiagramSTAT1 VDDVSSPROGVBAT+- single Li-Ion Cell1,2 MCP7383369,1071 F1A Li-Ion Battery Charger5 VIN470 470 470 STAT2 PGTHERMT4381 F1k 10 k +-ReferenceGeneratorVREF ( )

4 VDDSTAT1 PROGVBATG= Control54 k 121 k UVLO+-PRECONDITION6 A+-TERMINATIO N+-111 k +-CA10 k k 6k 48 k k Charge +-+ k 310 k 6 AG= +-CURRENT LIMIT10 A+-LTVT+ 121 k THERM50 ACharge Control, Timer, and Status LogicSTAT2PG (TE)+-LDO1M 175 k SHDN 2009 Microchip Technology 3 MCP73833 CHARACTERISTICSA bsolute Maximum Ratings Inputs and Outputs to (VDD+ )VMaximum Junction Temperature, TJ. Internally LimitedStorage temperature .. -65 C to +150 CESD protection on all pins:Human Body Model (HBM)( k in Series with 100 pF).. 4kVMachine Model (MM)(200 pF, No Series Resistance) .. 300V*Notice: Stresses above those listed under MaximumRatings may cause permanent damage to the is a stress rating only and functional operation ofthe device at those or any other conditions above thoseindicated in the operational listings of this specificationis not implied.

5 Exposure to maximum rating conditionsfor extended periods may affect device CHARACTERISTICSE lectrical Specifications: Unless otherwise specified, all limits apply for VDD= [VREG(Typical)+ ] to 6V, TA=-40 C to 85 C. Typical values are at +25 C, VDD= [VREG(Typical)+ ] ParametersSymMinTypMaxUnitsConditionsSup ply InputSupply 6 VChargingVREG(Typ-ical)+ 6 VCharge Complete, StandbySupply CurrentISS 20003000 ACharging 150300 ACharge Complete 100300 AStandby (No Battery or PROG Floating) 50100 AShutdown (VDD < VBAT, or VDD < VSTOP)UVLO Start Low-to-HighUVLO Stop High-to-LowUVLO HysteresisVHYS 100 mVVoltage Regulation (Constant Voltage Mode, System Test Mode)Regulated Output [VREG(Typical)+1V] mA C to +55 Regulation|( VBAT/VBAT)/ VDD| [VREG(Typical)+1V] to 6V, IOUT=10 mALoad Regulation| VBAT/ VBAT| mA to 100 mAVDD=[VREG(Typical)+1V]Supply Ripple AttenuationPSRR 58 dBIOUT=10 mA, 10Hz to 1 kHz 47 dBIOUT=10 mA, 10Hz to 10 kHz 25 dBIOUT=10 mA, 10Hz to 1 MHzCurrent Regulation (Fast Charge Constant Current Mode)

6 Fast Charge Current RegulationIREG90100110mAPROG = 10 k 90010001100mAPROG = k TA=-5 C to +55 CMaximum Output Current LimitIMAX 1200 mAPROG < 833 MCP73833/4DS22005B-page 4 2009 Microchip Technology Current Regulation (Trickle Charge Constant Current Mode)Precondition Current RatioIPREG / = k to 10 k 152025%TA=-5 C to +55 C304050% 100 %Precondition Voltage Threshold RatioVPTH / HysteresisVPHYS 100 mVVBAT High-to-LowCharge TerminationCharge Termination Current RatioITERM / = k to 10 k C to +55 RechargeRecharge Voltage Threshold RatioVRTH / VREG %VBAT High-to-Low %Pass Transistor ON-ResistanceON-ResistanceRDSON 300 m VDD = = 105 CBattery Discharge CurrentOutput Reverse Leakage CurrentIDISCHARGE APROG Floating 2 AVDD < VBAT 2 AVDD < VSTOP ACharge CompleteStatus Indicators - STAT1, STAT2, PGSink CurrentISINK 1525mALow Output VoltageVOL 1 VISINK = 4 mAInput Leakage CurrentILK AHigh Impedance.

7 6V on pinPROG InputCharge Impedance RangeRPROG1 20k Standy ImpedanceRPROG70 200k Minimum Impedance for StandbyThermistor BiasThermistor Current SourceITHERM475053 A2 k < RTHERM < 50 k Thermistor ComparatorUpper Trip Low-to-HighUpper Trip Point HysteresisVT1 HYS -50 mVLower Trip High-to-LowLower Trip Point HysteresisVT2 HYS 50 mVSystem Test (LDO) ModeInput High Voltage LevelVIH( ) VTHERM Input Sink CurrentISINK3620 AStand-by or system test modeBypass CapacitanceCBAT1 FIOUT < 250 FIOUT > 250 mADC CHARACTERISTICS (CONTINUED)Electrical Specifications: Unless otherwise specified, all limits apply for VDD= [VREG(Typical)+ ] to 6V, TA=-40 C to 85 C. Typical values are at +25 C, VDD= [VREG(Typical)+ ] ParametersSymMinTypMaxUnitsConditions 2009 Microchip Technology 5 MCP73833/4 TEMPERATURE SPECIFICATIONSA utomatic Power DownAutomatic Power Down Entry ThresholdVPD VBAT +50 mV < VBAT < VREGVDD FallingAutomatic Power Down Exit Thresh-oldVPDEXIT VBAT +150 mV < VBAT < VREGVDD RisingTimer Enable Input (TE)Input High Voltage VInput Low Voltage LevelVIL VInput Leakage CurrentILK 1 AVTE = 6 VThermal ShutdownDie TemperatureTSD 150 CDie Temperature HysteresisTSDHYS 10 CDC CHARACTERISTICS (CONTINUED)Electrical Specifications: Unless otherwise specified, all limits apply for VDD= [VREG(Typical)+ ] to 6V, TA=-40 C to 85 C.

8 Typical values are at +25 C, VDD= [VREG(Typical)+ ] ParametersSymMinTypMaxUnitsConditionsAC CHARACTERISTICSE lectrical Specifications: Unless otherwise specified, all limits apply for VDD= [VREG(Typical)+ ] to 6V, TA=-40 C to 85 C. Typical values are at +25 C, VDD= [VREG(Typical)+ ] ParametersSymMinTypMaxUnitsConditionsUVL O Start DelaytSTART 5 msVDD Low-to-HighCurrent RegulationTransition Time Out of PreconditioningtDELAY 1 msVBAT<VPTH to VBAT>VPTHC urrent Rise Time Out of PreconditioningtRISE 1 msIOUT Rising to 90% of IREGP reconditioning Comparator Filter VBAT Rise/FallTermination Comparator Filter IOUT FallingCharge Comparator Filter VBAT FallingThermistor Comparator Filter THERM Rise/FallElapsed TimerElapsed Timer PeriodtELAPSED000 HoursTimer IndicatorsStatus Output turn-offtOFF 200 sISINK = 1 mA to 0 mAStatus Output turn-ontON 200 sISINK = 0 mA to 1 mAElectrical Specifications.

9 Unless otherwise specified, all limits apply for VDD= [VREG(Typical)+ ] to values are at +25 C, VDD= [VREG(Typical)+ ] ParametersSymbolMinTypMaxUnitsConditions Temperature RangesSpecified Temperature RangeTA-40 +85 COperating Temperature RangeTA-40 +125 CStorage Temperature RangeTA-65 +150 CThermal Package ResistancesThermal Resistance, MSOP-10 JA 113 C/W4-Layer JC51-7 Standard Board, Natural ConvectionThermal Resistance, DFN-10, 3 mm x 3 mm JA 41 C/W4-Layer JC51-7 Standard Board, Natural ConvectionMCP73833/4DS22005B-page 6 2009 Microchip Technology : 2009 Microchip Technology 7 MCP73833 PERFORMANCE CURVESNote: Unless otherwise indicated, VDD = , VREG = , IOUT = 10 mA and TA= +25 C, Constant-voltage 2-1:Battery Regulation Voltage (VBAT) vs. Supply Voltage (VDD).FIGURE 2-2:Battery Regulation Voltage (VBAT) vs. Ambient Temperature (TA).

10 FIGURE 2-3:Output Leakage Current (IDISCHARGE) vs. Battery Regulation Voltage (VBAT).FIGURE 2-4: Charge Current (IOUT) vs. Programming Resistor (RPROG).FIGURE 2-5: Charge Current (IOUT) vs. Supply Voltage (VDD).FIGURE 2-6: Charge Current (IOUT) vs. Supply Voltage (VDD).Note:The graphs and tables provided following this note are a statistical summary based on a limited number ofsamples and are provided for informational purposes only. The performance characteristics listed hereinare not tested or guaranteed. In some graphs or tables, the data presented may be outside the specifiedoperating range ( , outside specified power supply range) and therefore outside the warranted Voltage (V)Battery Regulation Voltage (V)MCP73833 IOUT = 10 mAIOUT = 100 mAIOUT = 500 mAIOUT = 900 Temperature ( C)Battery Regulation Voltage (V)MCP73833 IOUT = 10 mAIOUT = 100 mAIOUT = 500 mAIOUT = 900 Regulation Voltage (V)Output Leakage Current ( A)+85 C-40 C+25 C1010010001357911 13 15 17 19 21 Programming Resistor (k ) Charge Current (mA) Voltage (V) Charge Current (mA)RPROG = 10 k Voltage (V) Charge Current (mA)RPROG = 1 k MCP73833/4DS22005B-page 8 2009 Microchip Technology PERFORMANCE CURVES (Continued)Note: Unless otherwise indicated, VDD = , VREG = , IOUT = 10 mA and TA= +25 C, Constant-voltage 2-7: Charge Current (IOUT) vs.