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BQ25890RTWT Datasheet(PDF) 10 Page - Texas Instruments |
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BQ25890RTWT Datasheet(HTML) 10 Page - Texas Instruments |
10 / 69 page 10 bq25890, bq25892 SLUSC86B – MARCH 2015 – REVISED MAY 2016 www.ti.com Product Folder Links: bq25890 bq25892 Submit Documentation Feedback Copyright © 2015–2016, Texas Instruments Incorporated Electrical Characteristics (continued) VVBUS_UVLOZ < VVBUS < VACOV and VVBUS > VBAT > VSLEEP, TJ = –40°C to +125°C and TJ = 25°C for typical values (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT BATTERY CHARGER VBAT(REG_RANG E) Typical charge voltage range 3.840 4.608 V VBAT(REG_STEP) Typical charge voltage step 16 mV VBAT(REG) Charge voltage resolution accuracy VBAT = 4.208 V (REG06[7:2]=010111) or VBAT = 4.352 V (REG06[7:2]=100000) TJ = –40°C to +85°C -0.5% 0.5% I(CHG_REG_RAN GE) Typical fast charge current regulation range 0 5056 mA I(CHG_REG_STEP ) Typical fast charge current regulation step 64 mA I(CHG_REG_ACC) Fast charge current regulation accuracy VBAT = 3.1 V or 3.8 V, ICHG = 128 mA TJ = –40°C to +85°C -20% 20% VBAT= 3.1 V or 3.8 V, ICHG = 256 mA TJ = –40°C to +85°C -10% 10% VBAT= 3.1 V or 3.8 V, ICHG=1792 mA TJ = –40°C to +85°C -5% 5% VBAT(LOWV) Battery LOWV falling threshold Fast charge to precharge, BATLOWV (REG06[1]) = 1 2.6 2.8 2.9 V Battery LOWV rising threshold Precharge to fast charge, BATLOWV (REG06[1])=1 (Typical 200-mV hysteresis) 2.8 3 3.1 V I(PRECHG_RANG E) Precharge current range 64 1024 mA I(PRECHG_STEP) Typical precharge current step 64 mA I(PRECHG_ACC) Precharge current accuracy VBAT=2.6 V, IPRECHG = 256 mA –10% +10% I(TERM_RANGE) Termination current range 64 1024 mA I(TERM_STEP) Typical termination current step 64 mA I(TERM_ACC) Termination current accuracy ITERM = 256 mA, ICHG<= 1344 mA TJ = –20°C to +85°C –12% 12% ITERM = 256 mA, ICHG> 1344 mA TJ = –20°C to +85°C –20% 20% V(SHORT) Battery short voltage VBAT falling 2 V V(SHORT_HYST) Battery short voltage hysteresis VBAT rising 200 mV I(SHORT) Battery short current VBAT < 2.2 V 100 mA V(RECHG) Recharge threshold below VBATREG VBAT falling, VRECHG (REG06[0]=0) = 0 100 mV VBAT falling, VRECHG (REG06[0]=0) = 1 200 mV IBAT(LOAD) Battery discharge load current VBAT = 4.2 V 15 mA ISYS(LOAD) System discharge load current VSYS = 4.2 V 30 mA RON(BATFET) SYS-BAT MOSFET (BATFET) on-resistance TJ = 25°C 11 13 m Ω TJ = –40°C to +125°C 11 19 m Ω |
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