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LTC4098-1 数据表(PDF) 4 Page - Linear Technology |
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LTC4098-1 数据表(HTML) 4 Page - Linear Technology |
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4 / 32 page  LTC4098/LTC4098-1 4 40981fb SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VPROG PROG Pin Servo Voltage 1.000 V VPROG,TRKL PROG Pin Servo Voltage in Trickle Charge BAT < VTRKL 0.100 V hPROG Ratio of IBAT to PROG Pin Current 1030 mA/mA VTRKL Trickle Charge Threshold Voltage BAT Rising 2.7 2.85 3 V ΔVTRKL Trickle Charge Hystersis Voltage 130 mV VRECHRG Recharge Battery Threshold Voltage Threshold Voltage Relative to VFLOAT –80 –100 –120 mV tTERM Safety Timer Termination Period Timer Starts When BAT = VFLOAT 3.4 4 4.6 Hour tBADBAT Bad Battery Termination Time BAT < VTRKL 0.43 0.5 0.58 Hour hC/10 End of Charge Indication Current Ratio (Note 5) 0.09 0.1 0.11 mA/mA VCHRG CHRG Pin Output Low Voltage ICHRG = 5mA 65 100 mV ICHRG CHRG Pin Input Current BAT = 4.5V, VCHRG = 5V 0 1 μA RON_CHG Battery Charger Power FET On-Resistance (Between VOUT and BAT) IBAT = 200mA 0.18 Ω TLIM Junction Temperature in Constant- Temperature Mode 110 °C NTC VCOLD Cold Temperature Fault Threshold Voltage Rising Threshold Hysteresis 75.0 76.5 1.5 78.0 %NTCBIAS %NTCBIAS VHOT Hot Temperature Fault Threshold Voltage Falling Threshold Hysteresis 33.4 34.9 1.5 36.4 %NTCBIAS %NTCBIAS VDIS NTC Disable Threshold Voltage Falling Threshold Hysteresis 0.7 1.7 50 2.7 %NTCBIAS mV INTC NTC Leakage Current NTC = 5V –50 50 nA Ideal Diode VFWD Forward Voltage Detection IVOUT = 10mA 15 mV RDROPOUT Internal Diode On-Resistance, Dropout IVOUT = 200mA 0.18 Ω IMAX Diode Current Limit 2 A Logic (D0, D1, D2) VIL Input Low Voltage 0.4 V VIH Input High Voltage 1.2 V IPD Static Pull-Down Current VPIN = 1V 2 μA Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC4098E/LTC4098E-1 are guaranteed to meet performance specifications from 0°C to 85°C. Specifications over the – 40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: The LTC4098E/LTC4098E-1 include overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125°C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. Note 4: Total input current is the sum of quiescent current, IVBUSQ, and measured current given by VCLPROG/RCLPROG • (hCLPROG + 1) Note 5: hC/10 is expressed as a fraction of measured full charge current with a 5k PROG resistor. ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VBUS = 5V, BAT = 3.8V, RCLPROG = 3.01k, unless otherwise noted. |
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