LTC4000 e lecTrical characTerisTics The l denotes the specifications which apply over the full operatingjunction temperature range, otherwise specifications are at TA = 25°C. VIN = VCLN = 3V to 60V unless otherwise noted (Notes 2, 3).SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITSCharge Termination CX Pin Pull-Up Current VCX = 0.1V l –5.5 –5.0 –4.5 µA VCX,IBMON(OS) CX Comparator Offset Voltage, IBMON Falling VCX = 0.1V l 0.5 10 25 mV VCX,IBMON(HYS) CX Comparator Hysteresis Voltage 5 mV TMR Pull-Up Current VTMR = 0V –5.0 μA TMR Pull-Down Current VTMR = 2V 5.0 μA TMR Pin Frequency CTMR = 0.01μF 400 500 600 Hz TMR Threshold for CX Termination l 2.1 2.5 V tT Charge Termination Time CTMR = 0.1μF l 2.3 2.9 3.5 h tT/tBB Ratio of Charge Terminate Time to Bad Battery CTMR = 0.1μF l 3.95 4 4.05 h/h Indicator Time VNTC(COLD) NTC Cold Threshold VNTC Rising, % of VBIAS l 73 75 77 % VNTC(HOT) NTC Hot Threshold VNTC Falling, % of VBIAS l 33 35 37 % VNTC(HYS) NTC Thresholds Hysteresis % of VBIAS 5 % VNTC(OPEN) NTC Open Circuit Voltage % of VBIAS l 45 50 55 % RNTC(OPEN) NTC Open Circuit Input Resistance 300 kΩ Voltage Monitoring and Open Drain Status Pins VVM(TH) VM Input Falling Threshold l 1.176 1.193 1.204 V VVM(HYS) VM Input Hysteresis 40 mV VM Input Current VVM = 1.2V ±0.1 µA IRST,CHRG,FLT(LKG) Open Drain Status Pins Leakage Current VPIN = 60V ±1 µA VRST,CHRG,FLT(VOL) Open Drain Status Pins Voltage Output Low IPIN = 1mA l 0.4 V Input PowerPath Control Input PowerPath Forward Regulation Voltage VIID,CSP, 3V ≤ VCSP ≤ 60V l 0.1 8 20 mV Input PowerPath Fast Reverse Turn-Off VIID,CSP, 3V ≤ VCSP ≤ 60V, l –90 –50 –20 mV Threshold Voltage VIGATE = VCSP – 2.5V, ∆IIGATE/∆ VIID,CSP ≥ 100μA/mV Input PowerPath Fast Forward Turn-On VIID,CSP, 3V ≤ VCSP ≤ 60V, l 40 80 130 mV Threshold Voltage VIGATE = VIID – 1.5V, ∆IIGATE/∆ VIID,CSP ≥ 100μA/mV Input Gate Turn-Off Current VIID = VCSP, VIGATE = VCSP – 1.5V –0.3 μA Input Gate Turn-On Current VCSP = VIID – 20mV, 0.3 μA VIGATE = VIID – 1.5V IIGATE(FASTOFF) Input Gate Fast Turn-Off Current VCSP = VIID + 0.1V, –0.5 mA VIGATE = VCSP – 3V IIGATE(FASTON) Input Gate Fast Turn-On Current VCSP = VIID – 0.2V, 0.7 mA VIGATE = VIID – 1.5V VIGATE(ON) Input Gate Clamp Voltage IIGATE = 2µA, VIID = 12V to 60V, l 13 15 V VCSP = VIID – 0.5V, Measure VIID – VIGATE Input Gate Off Voltage IIGATE = – 2μA, VIID = 3V to 59.9V, l 0.45 0.7 V VCSP = VIID + 0.5V, Measure VCSP – VIGATE 4000fb 4 For more information www.linear.com/LTC4000 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
