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BQ51050BRHLR Datasheet(PDF) 4 Page - Texas Instruments |
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BQ51050BRHLR Datasheet(HTML) 4 Page - Texas Instruments |
4 / 31 page bq51050B bq51051B SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 www.ti.com ELECTRICAL CHARACTERISTICS Over junction temperature range 0°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VUVLO Under-voltage lock-out VRECT: 0V → 3V 2.6 2.7 2.8 V Hysteresis on UVLO VRECT: 3V → 2V 250 mV VHYS-UVLO Hysteresis on OVP VRECT: 16V → 5V 150 mV VRECT Input over-voltage threshold VRECT: 5V → 16V 14.5 15 15.5 V VRECT-REG (1) VRECT regulation voltage 5.11 V ILOAD Hysteresis for dynamic VRECT thresholds as a % ILOAD ILOAD falling 5% of IILIM VBAT = 3.5 V, VTRACK Tracking VRECT regulation above VBAT 300 mV IBAT ≥ 500mA VRECT-REV = VBAT – VRECT, VRECT-REV Rectifier reverse voltage protection at the BAT(output) 8.3 9 V VBAT = 10V Rectifier under voltage protection, restricts IBAT at VRECT-DPM 3 3.1 3.2 V VRECT-DPM QUIESCENT CURRENT IBAT = 0, 0°C ≤ TJ ≤ 85°C 8 10 mA Active chip quiescent current consumption from RECT IRECT (in the prswireless power is present) IBAT = 300mA, 0°C ≤ TJ ≤ 85°C 2 3 mA Quiescent current at the BAT when wireless power is IQ VBAT = 4.2V, 0°C ≤ TJ ≤ 85°C 12 20 µA disabled(Standby) ILIM SHORT PROTECTION Highest value of ILIM resistor considered a fault (short). RILIM: 200 Ω → 50 Ω. IBAT latches off, cycle RILIM-SHORT 120 Ω power to reset Monitored for IBAT > 100 mA tDGL-Short Deglitch time transition from ILIM short to IBAT disable 1 ms ILIM-SHORT,OK enables the ILIM short comparator when ILIM_SC IBAT: 0 → 200 mA 110 145 165 mA IBAT is greater than this value ILIM-SHORT, OK Hysteresis for ILIM-SHORT,OK comparator IBAT: 200 → 0 mA 30 mA HYSTERESIS Maximum IBAT that will be delivered for 1 IBAT-CL Maximum output current limit 2.4 A ms when ILIM is shorted BATTERY SHORT PROTECTION VBAT(SC) BAT pin short-circuit detection/pre-charge threshold VBAT: 3 V → 0.5 V, no deglitch 0.75 0.8 0.85 V VBAT(SC)-HYS VBAT(SC) hysteresis VBAT: 0.5 V → 3 V 100 mV Source current to BAT pin during short-circuit IBAT(SC) VBAT = 0V 12 18 22 mA detection PRECHARGE VLOWV Pre-charge to fast charge transition threshold VBAT: 2 V → 4 V 2.9 3.0 3.1 V VLOWV > VBAT > VBAT(SC), KPRECHG Pre-charge current as a percentage of IBAT 18% 20% 23% IBAT: 50 – 300 mA tpre-charge Pre-charge timeout VBAT<VLOWV 30 min tDGL1(LOWV) De-glitch time, pre- to fast-charge 25 ms tDGL2(LOWV) De-glitch time, fast- to pre-charge 25 ms TIMERS Tfast-charge Fast-charge timer VLOWV < VBAT < VBAT(REG) 36000 sec Tpre-charge Pre-charge timer VBAT-SHORT < VBAT < VLOWV 1800 sec OUTPUT bq51050B 4.16 4.2 4.22 VOREG Regulated BAT(output) voltage IBAT = 1000 mA V bq51051B 4.30 4.35 4.37 VDO Drop-out voltage, RECT to BAT IBAT = 1A 110 190 mV KILIM Current programming factor RLIM = KILIM / IILIM 290 300 320 A Ω IBAT Battery charge current limit programming range 1500 mA ICOMM-CL Current limit during communication 330 390 420 mA (1) VRECT(REG) is over ridden when rectifier fold back mode is active (VRECT(REG)-TRACKING). 4 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B |
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