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BQ24072RGTRG4 Datasheet(PDF) 5 Page - Texas Instruments |
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BQ24072RGTRG4 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 42 page bq24072, bq24073 bq24074, bq24075, bq24079 www.ti.com SLUS810E – SEPTEMBER 2008 – REVISED JULY 2010 ELECTRICAL CHARACTERISTICS (continued) Over junction temperature range (0° ≤ TJ ≤ 125°C) and the recommended supply voltage range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT BATTERY CHARGER IBAT Source current for BAT pin short-circuit detection VBAT = 1.5V 4 7.5 11 mA VBAT(SC) BAT pin short-circuit detection threshold VBAT rising 1.6 1.8 2 V ('72, '73, '74, '75) 4.16 4.20 4.23 VBAT(REG) Battery charge voltage V ('79) 4.059 4.100 4.141 VLOWV Pre-charge to fast-charge transition threshold VIN > VUVLO and VIN > VBAT + VIN(DT) 2.9 3 3.1 V tDGL1(LOWV) Deglitch time on pre-charge to fast-charge transition 25 ms tDGL2(LOWV) Deglitch time on fast-charge to pre-charge transition 25 ms VBAT(REG) > VBAT > VLOWV, VIN = 5 V CE = LO, Battery fast charge current range 300 1500 mA EN1 = LO, EN2 = HI ICHG CE = LO, EN1= LO, EN2 = HI, Battery fast charge current VBAT > VLOWV, VIN = 5 V, IINmax > ICHG, no load on OUT pin, KISET/RISET A thermal loop and DPPM 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 A Ω CE = LO, (EN1, EN2) ≠ (LO, LO), 0.09×ICHG 0.1×ICHG 0.11×ICHG VBAT > VRCH, t < tMAXCH, VIN = 5 V, DPPM loop and thermal loop not active Termination comparator detection threshold ITERM A (internally set) CE = LO, (EN1, EN2) = (LO, LO), 0.027×ICHG 0.033×ICHG 0.040×ICHG VBAT > VRCH, t < tMAXCH, VIN = 5 V, DPPM loop and thermal loop not active IBIAS(ITERM) Current for external termination-setting resistor VIN > VUVLO and VIN > VBAT + VIN(DT) 72 75 78 mA Termination current threshold (externally set) ITERM KITERM × RITERM / RISET A (bq24074) USB500 or ISET mode(EN1, EN2) ≠ (LO, LO) 0.0225 0.0300 0.0375 CE = LO, VBAT > VRCH, t < tMAXCH, VIN = 5 V, DPPM loop and thermal loop not active K Factor for termination detection threshold KITERM A (externally set) (bq24074) USB100 mode (EN1, EN2) = (LO, LO), 0.008 0.0100 0.012 CE = LO, VBAT > VRCH, t < tMAXCH, VIN = 5 V, DPPM loop and thermal loop not active tDGL(TERM) Deglitch time, termination detected 25 ms VBAT(REG) VBAT(REG) VBAT(REG) VRCH Recharge detection threshold VIN > VUVLO and VIN > VBAT + VIN(DT) V –140mV –100mV –60mV tDGL(RCH) Deglitch time, recharge threshold detected 62.5 ms VBAT = 3.6 V. Time measured from tDGL(NO-IN) Delay time, input power loss to OUT LDO turn-off 20 ms VIN: 5 V → 3 V 1 ms fall-time IBAT(DET) Sink current for battery detection VBAT = 2.5V 5 7.5 10 mA tDET Battery detection timer BAT high or low 250 ms BATTERY CHARGING TIMERS tPRECHG Pre-charge safety timer value TMR = floating 1440 1800 2160 s tMAXCHG Charge safety timer value TMR = floating 14400 18000 21600 s tPRECHG Pre-charge safety timer value 18 k Ω < RTMR < 72 kΩ RTMR × KTMR s tMAXCHG Charge safety timer value 18 k Ω < RTMR < 72 kΩ 10×R TMR ×KTMR s KTMR Timer factor 36 48 60 s/k Ω BATTERY-PACK NTC MONITOR (1) INTC NTC bias current VIN > UVLO and VIN > VBAT + VIN(DT) 72 75 78 mA VHOT High temperature trip point Battery charging, VTS Falling 270 300 330 mV VHYS(HOT) Hysteresis on high trip point Battery charging, VTS Rising from VHOT 30 mV VCOLD Low temperature trip point Battery charging, VTS Rising 2000 2100 2200 mV VHYS(COLD) Hysteresis on low trip point Battery charging, VTS Falling from VCOLD 300 mV tDGL(TS) Deglitch time, pack temperature fault detection TS fault detected to charger disable 50 ms VDIS(TS) TS function disable threshold (bq24072, bq24073) TS unconnected VIN - 200mV V THERMAL REGULATION TJ(REG) Temperature regulation limit 125 °C TJ(OFF) Thermal shutdown temperature TJ Rising 155 °C TJ(OFF-HYS) Thermal shutdown hysteresis 20 °C (1) These numbers set trip points of 0°C and 50°C while charging, with 3°C hysteresis on the trip points, with a Vishay Type 2 curve NTC with an R25 of 10 k Ω. Copyright © 2008–2010, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): bq24072 bq24073 bq24074 bq24075, bq24079 |
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