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LTC4061 Datasheet(PDF) 3 Page - Linear Technology |
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LTC4061 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 20 page  LTC4061 4061fd elecTrical characTerisTics Note1: 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. Note2: The LTC4061 is guaranteed to meet performance specifications from 0°C to 70°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note3: Failure to correctly solder the exposed pad of the package to the PC board will result in a thermal resistance much higher than 40°C/W. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS REN EN Pin Pull-Down Resistor l 2 3.4 5 MΩ VEN EN Input Threshold Voltage EN Rising, 4.3V < VCC < 8V Hysteresis 0.4 0.7 70 1 V mV VCT Charge Termination Mode Threshold Voltage VTIMER from High to Low Hysteresis 0.4 0.7 50 1 V mV VUT User Termination Mode Threshold Voltage VTIMER from Low to High Hysteresis 3.9 4.2 50 V mV IDETECT Charge Current Detection Threshold RDET = 1k, 0 ≤ TA ≤ 85°C RDET = 2k, 0 ≤ TA ≤ 85°C RDET = 10k, 0 ≤ TA ≤ 85°C RDET = 20k, 0 ≤ TA ≤ 85°C 90 45 8 3.8 100 50 10 5 110 55 12 6.2 mA mA mA mA ΔVRECHRG Recharge Threshold Voltage VFLOAT – VRECHRG, 0 ≤ TA ≤ 85°C 65 100 135 mV tSS Soft-Start Time IBAT from 0 to ICHRG 100 µs tTERM Termination Comparator Filter Time Current Termination Mode 0.8 1.5 2.5 ms tRECHRG Recharge Comparator Filter Time 3 7 14 ms tTIMER Charge Cycle Time CTIMER = 0.1µF 2.55 3 3.45 hr RC/5 C/5 Pin Pull-Down Resistor l 2 3.4 5 MΩ VC/5 C/5 Input Threshold Voltage C/5 Rising, 4.3V < VCC < 8V Hysteresis 0.4 0.7 70 1 V mV VNTC-HOT NTC Pin Hot Threshold Voltage VNTC Falling VNTC Rising 0.35 • VCC 0.36 • VCC V V VNTC-COLD NTC Pin Cold Threshold Voltage VNTC Rising VNTC Falling 0.76 • VCC 0.75 • VCC V V VNTC-DIS NTC Pin Disable Threshold Voltage VNTC Falling Hysteresis 70 85 50 100 mV mV fCHRG NTC Fault Pulsing Frequency Current/User Termination Mode Time Termination Mode CTIMER = 0.1µF 1 1.5 1.5 2 Hz Hz TLIM Junction Temperature in Constant Temperature Mode 105 °C RON Power FET On-Resistance (Between VCC and BAT) VBAT = 3.85V, ICC = 175mA, RPROG = 2k 375 mΩ Theldenotesthespecificationswhichapplyoverthefulloperating temperaturerange,otherwisespecificationsareatTA=25°C.VCC=5V,unlessotherwisenoted. Note4: Supply current includes PROG pin current and IDET pin current (approximately 100µA each) but does not include any current delivered to the battery through the BAT pin (approximately 100mA). Note5: This IC includes overtemperature protection that is intended to protect the device during momentary overload conditions. Overtemperature protection will become active at a junction temperature greater than the maximum operating temperature. Continuous operation above the specified maximum operating junction temperature may impair device reliability. |
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