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BQ24253RGET Datasheet(PDF) 6 Page - Texas Instruments |
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BQ24253RGET Datasheet(HTML) 6 Page - Texas Instruments |
6 / 49 page bq24250 bq24251 bq24253 SLUSBA1C – OCTOBER 2012 – REVISED JUNE 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) VUVLO < VIN < VOVP and VIN > VBAT+VSLP, TJ = 0ºC-125°C and TJ = 25°C for typical values (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Pr-charge current (VBATUVLO < Ipre-chg is a precentile of the external IPRECHG 8 10 12 % VBAT < VLOWV) fast charge settings. Deglitch time for pre-charge to tDGL(LOWV) 32 ms fast charge transition Battery Under voltage lockout VBAT_UVLO VBAT rising 2.37 2.5 2.63 V threshold Battery UVLO hysteresis 200 mV Trickle charge to pre-charge VBATSHRT 1.9 2 2.1 V threshold Hysteresis for VBATSHRT Battery voltage falling 100 mV Trickle charge mode charge IBATSHRT 25 35 50 mA current (VBAT < VBATSHRT) Deglitch time for trickle charge tDGL(BATSHRT) 256 us to pre-charge transition Termination Current Threshold Termination current on SA only 10 %ICHG ITERM Termination Current Threshold –10 10 % Tolerance Deglitch time for charge Both rising and falling, 2-mV over- tDGL(TERM) 64 ms termination drive, tRISE, tFALL = 100 ns VRCH Recharge threshold voltage Below VBATREG 70 115 160 mV tDGL(RCH) Deglitch time VBAT falling below VRCH, tFALL = 100 ns 32 ms BATTERY DETECTION Battery Detection High VBATREG_HI Same as VBATREG VBATREG V Regulation Voltage Battery Detection Low VBATREG VBATREG_LO 360 mV offset from VBATREG V Regulation Voltage –480mV VBATREG VBATDET Hi Battery detection comparator VBATREG = VBATREG_HI V –120mV VBATREG VBATDET LO Battery detection comparator VBATREG = VBATREG_LO V +120mV IDETECT Battery Detection Current Sink Always on during battery detection 7.5 mA tDETECT Battery detection time For both VBATREG_HI and VBATREG_LO 32 ms Tsafe Safety Timer Accuracy –10 +10 % 6 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq24250 bq24251 bq24253 |
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