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MAX8934BETI+ Datasheet(PDF) 6 Page - Maxim Integrated Products |
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MAX8934BETI+ Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 31 page Dual-Input Linear Chargers, Smart Power Selector with Advanced Battery Temperature Monitoring 6 ______________________________________________________________________________________ ELECTRICAL CHARACTERISTICS (continued) (VDC = VPEN1 = VPEN2 = 5V, CEN = USUS = THMEN = GND, VBATT = 4V, VTHM = 1.65V, USB, THMSW, CHG, DONE, OT, DOK, UOK, FLT are unconnected, CCT = 0.068FF, TA = -40NC to +85NC, unless otherwise noted. Typical values are at TA = +25NC.) (Note 1) PARAMETER CONDITIONS MIN TYP MAX UNITS Maximum Prequal Time From CEN falling to end of prequal charge, VBATT = 2.5V 30 min Maximum Fast-Charge Time From CEN falling to FLT falling 300 min Maximum Top-Off Time MAX8934A/MAX8934C/MAX8934E 15 s MAX8934B/MAX8934D 60 min Timer Accuracy -20 +20 % Timer Extend Threshold Percentage of fast-charge current below where the timer clock operates at half-speed 50 % Timer Suspend Threshold Percentage of fast-charge current below where timer clock pauses 20 % THERMISTOR MONITOR (Beta = 3477) (Note 2) THM Cold No-Charge Threshold (T1) ICHG = 0A, when charging is suspended, 2NC hysteresis -2.2 0 +2.4 N C 73.9 74.4 75.1 % of THMSW THM Cold Threshold (T2) ICHG reduced (safety region 1 only), VBATT_REG reduced (safety region 2 only), 2NC hysteresis 8 10 12 N C 64.5 65 65.5 % of THMSW THM Hot Threshold (T3) VBATT_REG reduced (safety region 1), 2.5NC hysteresis 42.8 45 47.5 N C 32.1 32.4 32.8 % of THMSW THM Hot No-Charge Threshold (T4) ICHG = 0mA, when charging is suspended, 3NC hysteresis 57 60 63.5 N C 22.4 22.7 23 % of THMSW THM Hot Overtemperature Threshold (TOT) OT asserts low, 5NC hysteresis 71 75 80 N C 15.5 15.8 16 % of THMSW THERMISTOR MONITOR (Beta = 3964) (Note 3) THM Cold No-Charge Threshold (T1) ICHG = 0A, when charging is suspended, 2NC hysteresis -2.1 0 +2.4 N C 76.4 77.2 77.9 % of THMSW THM Cold Threshold (T2) ICHG reduced (safety region 1 only), VBATT_REG reduced (safety region 2), 2NC hysteresis 8.2 10 12 N C 66.2 67 67.6 % of THMSW |
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