LTC4000-1 - High Voltage High Current Controller for ...

1 LTC4000-1140001faFor more information Panel Input Regulation, Achieves Max Power Point to Greater than 98%Typical applicaTion FeaTuresDescripTionHigh Voltage high Current Controller for Battery Charging with Maximum Power Point Control The LT C 4000-1 is a high Voltage , high performance Controller that converts many externally compensated DC/DC power supplies into full-featured battery chargers with maximum power point control. In contrast to the LTC4000, the LTC4000-1 has an input Voltage regulation loop instead of the input Current regulation of the LTC4000-1 s battery charger include: accurate ( ) programmable float Voltage , select-able timer or Current termination, temperature qualified charging using an NTC thermistor, automatic recharge, C/10 trickle charge for deeply discharged cells, bad battery detection and status indicator outputs.

2 The battery charger also includes precision Current sensing that allows lower sense voltages for high Current LTC4000-1 supports intelligent PowerPath control. An external PFET provides low loss reverse Current protec-tion. Another external PFET provides low loss charging or discharging of the battery. This second PFET also facilitates an instant-on feature that provides immediate downstream system power even when connected to a heavily discharged or shorted LTC4000-1 is available in a low profile 28-lead 4mm 5mm QFN and SSOP at 10A Charger for Three LiFePO4 Cells with a Solar Panel InputapplicaTionsn Maximum Power Control: Solar Panel Input Compatiblen Complete high Performance Battery Charger When Paired with a DC/DC Convertern Wide Input and Output Voltage Range: 3V to 60Vn Input Ideal Diode for Low Loss Reverse Blocking and Load Sharingn Output Ideal Diode for Low Loss PowerPath and Load Sharing with the Batteryn Programmable Charge Current .

3 1% Accuracyn Accurate Programmable Float Voltagen Programmable C/X or Timer Based Charge Terminationn NTC Input for Temperature Qualified Chargingn 28-Lead 4mm 5mm QFN or SSOP Packagesn Solar Powered Battery Charger Systemsn Battery Charger with high Impedance Input Source, , Fuel Cell or Wind Turbinen Battery Equipped Industrial or Portable Military EquipmentsL, LT, LT C, LT M, Linear Technology and the Linear logo are registered trademarks and PowerPath is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective LiFePO4 BATTERY FLOAT10A MAX VOUT12V, 15 ASOLAR PANEL INPUT<60V OPEN CIRCUIT PEAK POWER VOLTAGESi7135DP133kCSNCSPBGATEIGATEBATOF BFBGBFBNTCCXLTC4000-1 ITHCCIID5m LT3845A100 F3V332k20k1 F10nF40001 FCHARGER OUTPUT Current : IRCS (A)110 INPUT REGULATION Voltage : VINREG (V)12161418205678940001 TA01b10234TA = 25 C98% TO 95% PEAK POWER100% TO 98% PEAK POWERLTC4000-1240001faFor more information MaxiMuM raTingsIN, CLN, IID, CSP, CSN, BAT.

4 To 62 VIN-CLN, CSP-CSN .. 1V to 1 VOFB, BFB, FBG .. to 62 VFBG .. 1mA to 2mA IGATE ..Max (VIID, VCSP) 10V to Max (VIID, VCSP)BGATE ..Max (VBAT, VCSN) 10V to Max (VBAT, VCSN)ENC, CX, NTC, VM .. to VBIASIFB, CL, TMR, IIMON, CC .. to VBIASBIAS .. to Min (6V, VIN)IBMON .. to Min (VBIAS, VCSP)ITH .. to 6 VCHRG, FLT, RST .. to 62 VCHRG, FLT, RST .. 1mA to 2mAOperating Junction Temper atur e Range (Note 2) ..125 CLead Temper atur e (Soldering, 10 sec) SSOP Package ..300 CStorage Temper atur e Range .. 65 C to 150 C (Note 1)910 TOP VIEWUFD PACKAGE28-LEAD (4mm 5mm) PLASTIC QFN1112132829 GND27 26 25 241423654321 VMRSTIIMONIFBENCIBMONCXCLIGATEOFBCSPCSNB GATEBATBFBFBGGNDINCLNCCITHIIDTMRGNDFLTCH RGBIASNTC717181920212216815 TJMAX = 125 C, JA = 43 C/W, JC = 4 C/W EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB1234567891011121314 TOP VIEWGN PACKAGE28-LEAD PLASTIC SSOP2827262524232221201918171615 ENCIBMONCXCLTMRGNDFLTCHRGBIASNTCFBGBFBBA TBGATEIFBIIMONRSTVMGNDINCLNCCITHIIDIGATE OFBCSPCSN TJMAX = 125 C, JA = 80 C/W, JC = 25 C/Wpin conFiguraTionorDer inForMaTionLEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGELTC4000 EUFD-1#PBFLTC4000 EUFD-1#TRPBF4000128-Lead (4mm 5mm)

5 Plastic QFN 40 C to 125 CLTC4000 IUFD-1#PBFLTC4000 IUFD-1#TRPBF4000128-Lead (4mm 5mm) Plastic QFN 40 C to 125 CLTC4000 EGN-1#PBFLTC4000 EGN-1#TRPBFLTC4000GN-128-Lead Plastic SSOP 40 C to 125 CLTC4000 IGN-1#PBFLTC4000 IGN-1#TRPBFLTC4000GN-128-Lead Plastic SSOP 40 C to 125 CConsult LT C Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LT C Marketing for information on non-standard lead based finish more information on lead free part marking, go to: For more information on tape and reel specifications, go to: more information characTerisTics The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25 C.

6 VIN = VCLN = 3V to 60V unless otherwise noted (Notes 2, 3).SYMBOLPARAMETERCONDITIONSMINTYPMAXUNI TSVINI nput Supply Operating Rangel360 VIINI nput Quiescent Operating Pin Operating CurrentVIN 3V, VCSN = VCSP VBATl50100 ABattery Only Quiescent CurrentVIN = 0V, VCSN = VCSP VBATl1020 AShutdownENC Input Voltage Input Voltage Pull-Up CurrentVENC = 0V 4 2 AENC Open Circuit VoltageVENC = RegulationVIFB_REGI nput Feedback Input CurrentVIFB = AVBFB_REGB attery Feedback Voltage VBFB Input CurrentVBFB = AVOFB_REGO utput Feedback Input CurrentVOFB = ARFBGG round Return Feedback Resistancel100400 VRECHRG(RISE)Rising Recharge Battery Threshold Voltage % of VRECHRG(HYS)Recharge Battery Threshold Voltage Hysteresis % of (INST_ON)

7 Instant-On Battery Voltage Threshold% of VBFB_REGl828690%VLOBATF alling Low Battery Threshold Voltage % of VBFB_REGl656871%VLOBAT(HYS)Low Battery Threshold Voltage Hysteresis% of VBFB_REG3% Current Monitoring and RegulationRatio of Monitored- Current Voltage to Sense VoltageVIN,CLN 50mV, VIIMON/VIN,CLN VCSP,CSN 50mV, VIBMON/VCSP, Voltage OffsetVCSP,CSN 50mV, VCSP = 60V or VIN,CLN 50mV, VIN = 60V (Note 4) 300 300 VCLN, CSP, CSN Common Mode Range(Note 4)l360 VCLN Pin Current 1 ACSP Pin CurrentVIGATE = Open, VIID = 0V90 ACSN Pin CurrentVBGATE = Open, VBAT = 0V45 AICLPull-Up Current for the Charge Current Limit Programming Pinl 55 50 45 AICL_TRKLPull-Up Current for the Charge Current Limit Programming Pin in Trickle Charge ModeVBFB < VLOBATl AInput Current Monitor Resistance to GND4090140k Charge Current Monitor Resistance to GND4090140k A5 Error Amp Offset for the Charge Current Loop (See Figure 1)VCL = 10010mVMaximum Programmable Current Limit Voltage more information characTerisTics The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25 C.

8 VIN = VCLN = 3V to 60V unless otherwise noted (Notes 2, 3).SYMBOLPARAMETERCONDITIONSMINTYPMAXUNI TSC harge TerminationCX Pin Pull-Up CurrentVCX = AVCX,IBMON(OS)CX Comparator Offset Voltage , IBMON FallingVCX = ,IBMON(HYS)CX Comparator Hysteresis Voltage5mVTMR Pull-Up CurrentVTMR = 0V ATMR Pull-Down CurrentVTMR = ATMR Pin FrequencyCTMR = F400500600 HzTMR Threshold for CX Termination TimeCTMR = of Charge Terminate Time to Bad Battery Indicator TimeCTMR = (COLD)NTC Cold ThresholdVNTC Rising, % of VBIASl737577%VNTC(HOT)NTC Hot ThresholdVNTC Falling, % of VBIASl333537% VNTC(HYS)NTC Thresholds Hysteresis% of VBIAS5% VNTC(OPEN)NTC Open Circuit Voltage % of VBIASl455055% RNTC(OPEN)NTC Open Circuit Input Resistance300k Voltage Monitoring and Open Drain Status PinsVVM(TH)VM Input Falling (HYS)VM Input Hysteresis40mVVM Input CurrentVVM = AIRST,CHRG,FLT(LKG)Open Drain Status Pins Leakage CurrentVPIN = 60V 1 AVRST,CHRG,FLT(VOL)

9 Open Drain Status Pins Voltage Output LowIPIN = PowerPath ControlInput PowerPath Forward Regulation VoltageVIID,CSP, 3V VCSP PowerPath Fast Reverse Turn-Off Threshold VoltageVIID,CSP, 3V VCSP 60V, VIGATE = VCSP , IIGATE/ VIID,CSP 100 A/mVl 90 50 20mVInput PowerPath Fast Forward Turn-On Threshold VoltageVIID,CSP, 3V VCSP 60V, VIGATE = VIID , IIGATE/ VIID,CSP 100 A/mVl4080130mVInput Gate Turn-Off CurrentVIID = VCSP, VIGATE = VCSP AInput Gate Turn-On CurrentVCSP = VIID 20mV, VIGATE = VIID AIIGATE(FASTOFF)Input Gate Fast Turn-Off CurrentVCSP = VIID + , VIGATE = VCSP 5V (FASTON)Input Gate Fast Turn-On CurrentVCSP = VIID , VIGATE = VIID (ON)Input Gate Clamp VoltageIIGATE = 2 A, VIID = 12V to 60V, VCSP = VIID , Measure VIID VIGATEl1315 VInput Gate Off VoltageIIGATE = 2 A, VIID = 3V to , VCSP = VIID + , Measure VCSP more information 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.

10 Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and 2: The LTC4000-1 is tested under conditions such that TJ TA. The LTC4000E-1 is guaranteed to meet specifications from 0 C to 85 C junction temperature. Specifications over the 40 C to 125 C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The LTC4000I-1 is guaranteed over the full 40 C to 125 C operating junction temperature range. Note that the maximum ambient temperature consistent with elecTrical characTerisTics The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25 C.