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LTC4058 Datasheet(PDF) 3 Page - Linear Technology |
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LTC4058 Datasheet(HTML) 3 Page - Linear Technology |
3 / 16 page 3 LTC4065/LTC4065A 4065fb SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IPROG PROG Pin Pull-Up Current VPROG > 1V 3 µA (LTC4065A) VMS,PROG PROG Shutdown Threshold Voltage VPROG Rising ● 3.7 4 4.3 V (LTC4065A Only) tSS Soft-Start Time 180 µs ITRKL Trickle Charge Current VBAT = 2V, RPROG = 2k (0.1%) 35 50 65 mA VTRKL Trickle Charge Threshold Voltage VBAT Rising ● 2.7 2.9 3.05 V VTRHYS Trickle Charge Hysteresis Voltage 90 mV ∆VRECHRG Recharge Battery Threshold Voltage VFLOAT – VRECHRG, 0°C < TA < 85°C 70 100 130 mV ∆VUVCL1 (VCC – VBAT) Undervoltage Current IBAT = 90% Programmed Charge Current 180 220 330 mV ∆VUVCL2 Limit IBAT = 10% Programmed Charge Current 90 125 150 mV tTIMER Termination Timer ● 3 4.5 6 Hrs Recharge Time ● 1.5 2.25 3 Hrs Low-Battery Trickle Charge Time VBAT = 2.5V ● 0.75 1.125 1.5 Hrs VACPR ACPR Pin Output Low Voltage IACPR = 5mA ● 60 105 mV (LTC4065A) IACPR ACPR Pin Input Current (LTC4065A) VCC = 4V, VACPR = 4V, VBAT = 4.5V ● 01 µA VCHRG CHRG Pin Output Low Voltage ICHRG = 5mA ● 60 105 mV ICHRG CHRG Pin Input Current VBAT = 4.5V, VCHRG = 5V ● 01 µA IC/10 End of Charge Indication Current RPROG = 2k (Note 5) ● 0.085 0.1 0.115 mA/mA Level TLIM Junction Temperature in Constant 115 °C Temperature Mode RON Power FET “ON” Resistance IBAT = 200mA 450 m Ω (Between VCC and BAT) fBADBAT Defective Battery Detection CHRG 2 Hz Pulse Frequency DBADBAT Defective Battery Detection CHRG 75 % Pulse Frequency Duty Ratio The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. VCC = 5V, VBAT = 3.8V, VEN = 0V (LTC4065 only) unless otherwise specified. (Note 2) ELECTRICAL CHARACTERISTICS 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 LTC4065/LTC4065A are 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. Note 3: Failure to solder the exposed backside of the package to the PC board ground plane will result in a thermal resistance much higher than rated. Note 4: Although the LTC4065 functions properly at 3.75V, full charge current requires an input voltage greater than the desired final battery voltage per the ∆VUVCL1 specification. Note 5: IC/10 is expressed as a fraction of measured full charge current with indicated PROG resistor. Note 6: This IC includes 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. |
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Similar Description - LTC4058 |
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