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BQ24072T Datasheet(PDF) 5 Page - Texas Instruments |
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BQ24072T Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 36 page  bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 ELECTRICAL CHARACTERISTICS (continued) Over junction temperature range (0°C < TJ < 125°C) and the recommended supply voltage range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Deglitch time, supplement mode short tDGL(SC2) 250 ms circuit Recovery time, supplement mode short tREC(SC2) 60 ms circuit BATTERY CHARGER Source current for BAT pin short-circuit IBAT(SC) 4 7.5 11 mA detection VBAT(SC) BAT pin short-circuit detection threshold 1.6 1.8 2.0 V bq24072T, bq24075T 4.16 4.20 4.24 VBAT(REG) Battery charge voltage V bq24079T 4.059 4.100 4.141 Pre-charge to fast-charge transition VLOWV 2.9 3 3.1 V threshold tDGL1(LOW Deglitch time on pre-charge to 25 ms V) fast-charge transition tDGL2(LOW Deglitch time on fast-charge to 25 ms V) pre-charge transition VBAT(REG) > VBAT > VLOWV, VIN = 5V, CE = LO, EN1= LO, EN2 = ICHG Battery fast charge current range 300 1500 mA HI CE = LO, EN1= LO, EN2 = HI, VBAT > VLOWV, ICHG Battery fast charge current VIN = 5V, IIN-MAX > ICHG, no load on OUT pin, thermal loop not KISET/RISET A active, DPM loop not active KISET Fast charge current factor 797 890 975 A Ω IPRECHG Pre-charge current KPRECHG /RISET A kPRECHG Pre-charge current factor 70 88 106 CE = LO, (EN1,EN2) ≠(LO,LO), 0.09×ICH 0.1×ICH 0.11×ICH VBAT > VRCH, t < tMAXCH, VIN = 5V, DPM loop not active, thermal G G G loop not active Charge current value for termination ITERM detection threshold CE = LO, (EN1,EN2)=(LO,LO), 0.027×IC .033×IC 0.040×IC VBAT > VRCH, t < tMAXCH, VIN = 5V, DPM loop not active, thermal HG HG HG loop not active tDGL(TERM Deglitch time, termination detected 25 ms ) VO(REG) VO(REG) VO(REG) VRCH Recharge detection threshold –100m V –140mV –60mV V Deglitch time, recharge threshold tDGL(RCH) 62.5 ms detected tDGL(NO- Delay time, input power loss to charger VBAT = 3.6V. Time measured from VIN: 20 ms IN) turn-off 5V → 3.3V 1ms fall-time IBAT(DET) Sink current for battery detection 5 7.5 10 mA tDET Battery detection timer 250 ms BATTERY CHARGING TIMERS tPRECHG Pre-charge safety timer value TMR = floating 1440 1800 2160 s tMAXCH Charge safety timer value TMR = floating 14400 18000 21600 s Pre-charge safety timer value(externally tPRECHG 18k Ω < RTMR < 72kΩ RTMR x KTMR s set) Charge safety timer value (externally tMAXCH 18k Ω < RTMR < 72kΩ 10 x RTMR x KTMR s set) KTMR Timer factor 35 45 55 s / k Ω BATTERY – PACK NTC MONITOR % of VHOT High temperature trip point Battery charging 12 12.5 13 VIN % of VHYS(HOT) Hysteresis on high trip point Battery charging 1 VIN % of VCOLD Low temperature trip point Battery charging 24.5 25 25.5 VIN VHYS(COL % of Hysteresis on low trip point Battery charging 1 D) VIN Copyright © 2009–2010, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): bq24072T bq24075T bq24079T |
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