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BQ24071RHLR Datasheet(PDF) 6 Page - Texas Instruments |
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BQ24071RHLR Datasheet(HTML) 6 Page - Texas Instruments |
6 / 26 page www.ti.com bq24070 bq24071 SLUS694B – MARCH 2006 – REVISED AUGUST 2006 ELECTRICAL CHARACTERISTICS (continued) over junction temperature range (0°C ≤ T J ≤ 125°C) and the recommended supply voltage range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT IIL Low-level input current, Mode –1 µA TIMERS K(TMR) Timer set factor t(CHG) = K(TMR) × R(TMR) 0.313 0.360 0.414 s/ Ω R(TMR)(9) External resistor limits 30 100 k Ω t(PRECHG) Precharge timer 0.09 × t(CHG) 0.10 × t(CHG) 0.11 × t(CHG) s Timer fault recovery pullup from I(FAULT) 1 k Ω OUT to BAT CHARGER SLEEP THRESHOLDS (PG THRESHOLDS, LOW → POWER GOOD) VVCC ≤ V(UVLO)≤ VI(BAT)≤ VO(BAT-REG), V(SLPENT)(10) Sleep-mode entry threshold VI(BAT) No t(BOOT-UP) delay +125 mV V VVCC ≥ V(UVLO)≤ VI(BAT)≤ VO(BAT-REG), V(SLPEXIT)(10) Sleep-mode exit threshold VI(BAT) No t(BOOT-UP) delay +190 mV R(TMR) = 50 kΩ, t(DEGL) Deglitch time for sleep mode(11) V(IN) decreasing below threshold, 100-ns 22.5 ms fall time, 10-mv overdrive START-UP CONTROL BOOT-UP On the first application of input with t(BOOT-UP) Boot-up time 120 150 180 ms Mode Low SWITCHING POWER SOURCE TIMING When input applied. Measure from: Switching power source from [PG: Lo → Hi to I (IN) > 5 mA], tSW-BAT 50 µs input to battery I(OUT) = 100 mA, RTRM = 50 K THERMAL SHUTDOWN REGULATION(12) T(SHTDWN) Temperature trip TJ (Q1 and Q3 only) 155 Thermal hysteresis TJ (Q1 and Q3 only) 30 °C TJ(REG) Temperature regulation limit TJ (Q2) 115 135 UVLO V(UVLO) Undervoltage lockout Decreasing VCC 2.45 2.50 2.65 V Hysteresis 27 mV (9) To disable the safety timer and charge termination, tie TMR to the VREF pin. (10) The IC is considered in sleep mode when IN is absent (PG = OPEN DRAIN). (11) Does not declare sleep mode until after the deglitch time and implement the needed power transfer immediately according to the switching specification. (12) Reaching thermal regulation reduces the charging current. Battery supplement current is not restricted by either thermal regulation or shutdown. Input power FETs turn off during thermal shutdown. The battery FET is only protected by a short-circuit limit which typically does not cause a thermal shutdown (input FETs turning off) by itself. 6 Submit Documentation Feedback |
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