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bq24171RGYT Datasheet(PDF) 8 Page - Texas Instruments |
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bq24171RGYT Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 35 page  bq24171 SLUSAF2A – FEBRUARY 2011 – REVISED MAY 2011 www.ti.com ELECTRICAL CHARACTERISTICS (continued) 4.5V ≤ V(PVCC, AVCC) ≤ 17V, –40°C < TJ + 125°C, typical values are at TA = 25°C, with respect to AGND (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS CHARGE TERMINATION KTERM Termination current set factor Percentage of fast charge current 10%(3) VSRP-SRN = 4 mV –25% 25% Termination current regulation accuracy VSRP-SRN = 2 mV –40% 40% tTERM_DEG Deglitch time for termination (both edges) 100 ms tQUAL Termination qualification time VSRN > VRECH and ICHG < ITERM 250 ms IQUAL Termination qualification current Discharge current once termination is detected 2 mA INPUT UNDER-VOLTAGE LOCK-OUT COMPARATOR (UVLO) VUVLO AC under-voltage rising threshold Measure on AVCC 3.4 3.6 3.8 V VUVLO_HYS AC under-voltage hysteresis, falling Measure on AVCC 300 mV SLEEP COMPARATOR (REVERSE DISCHARGING PROTECTION) VSLEEP SLEEP mode threshold VAVCC – VSRN falling 50 90 150 mV VSLEEP_HYS SLEEP mode hysteresis VAVCC – VSRN rising 200 mV tSLEEP_FALL_CD SLEEP deglitch to disable charge VAVCC – VSRN falling 1 ms tSLEEP_FALL_FETOFF SLEEP deglitch to turn off input FETs VAVCC – VSRN falling 5 ms Deglitch to enter SLEEP mode, disable tSLEEP_FALL VAVCC – VSRN falling 100 ms VREF and enter low quiescent mode Deglitch to exit SLEEP mode, and enable tSLEEP_PWRUP VAVCC – VSRN rising 30 ms VREF ACN-SRN COMPARATOR VACN-SRN Threshold to turn on BATFET VACN-SRN falling 150 220 300 mV VACN-SRN_HYS Hysteresis to turn off BATFET VACN-SRN rising 100 mV tBATFETOFF_DEG Deglitch to turn on BATFET VACN-SRN falling 2 ms tBATFETON_DEG Deglitch to turn off BATFET VACN-SRN rising 50 µs BAT LOWV COMPARATOR VLOWV Precharge to fast charge transition Measure on FB 1.43 1.45 1.47 V VLOWV_HYS Fast charge to precharge hysteresis Measure on FB 100 mV tpre2fas VLOWV rising deglitch Delay to start fast charge current 25 ms tfast2pre VLOWV falling deglitch Delay to start precharge current 25 ms RECHARGE COMPARATOR Recharge Threshold, below regulation VRECHG Measure on FB 35 50 65 mV voltage limit, VFB_REG-VFB tRECH_RISE_DEG VRECHG rising deglitch VFB decreasing below VRECHG 10 ms tRECH_FALL_DEG VRECHG falling deglitch VFB increasing above VRECHG 10 ms BAT OVER-VOLTAGE COMPARATOR VOV_RISE Over-voltage rising threshold As percentage of VFB_REG 104% VOV_FALL Over-voltage falling threshold As percentage of VFB_REG 102% (3) The minimum current is 120 mA on 10m Ω sense resistor. 8 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): bq24171 |
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