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bq24055 Datasheet(PDF) 4 Page - Texas Instruments |
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bq24055 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 37 page bq24050 bq24052 bq24055 SLUS940A – SEPTEMBER 2009 – REVISED SEPTEMBER 2009.................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over junction temperature range 0°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT QUIESCENT CURRENT IOUT(PDWN) Battery current into OUT pin VIN = 0V 1 μA IOUT(DONE) OUT pin current, charging terminated VIN = 6V, VOUT > VOUT(REG) 6 IIN(STDBY) Standby current into IN pin TS = LO, VIN ≤ 6V 125 μA TS = open, VIN = 6V, TTDM – no load on OUT pin, ICC Active supply current, IN pin 0.8 1 mA VOUT > VOUT(REG), IC enabled BATTERY CHARGER FAST-CHARGE VOUT(REG) Battery regulation voltage VIN =5.5V, IOUT =25mA, VTS-45°C≤ VTS ≤ VTS-0°C 4.16 4.20 4.23 V VO_HT(REG) Battery hot regulation Voltage VIN =5.5V, IOUT =25mA, VTS-60°C≤ VTS ≤ VTS-45°C 4.02 4.06 4.1 V Programmed Output “fast charge” VOUT(REG) > VOUT > VLOWV, VIN = 5V, ISET2=Lo, IOUT(RANGE) 10 800 mA current range RISET = 675 to 10.8kΩ Adjust VIN down until IOUT = 0.5A, VOUT = 4.15V, VDO(IN-OUT) Drop-Out, VIN – VOUT RISET = 675 , ISET2=Lo (Adaptor Mode); Tj ≤ 325 500 mV 100°C IOUT Output “fast charge” formula VOUT(REG) > VOUT > VLOWV, VIN = 5V, ISET2=Lo KISET/RISET A RISET = KISET /IOUT 50 < IOUT < 800 mA 510 540 570 KISET Fast charge current factor RISET = KISET /IOUT 25 < IOUT < 50 mA 480 527 600 A Ω RISET = KISET /IOUT 10 < IOUT < 25 mA 350 520 680 PRECHARGE – SET BY PRETERM PIN Pre-charge to fast-charge transition VLOWV 2.4 2.5 2.6 V threshold Deglitch time on pre-charge to tDGL1(LOWV) 70 μs fast-charge transition Deglitch time on fast-charge to tDGL2(LOWV) 32 ms pre-charge transition IPRE-TERM Refer to the Termination Section Pre-Charge Current Level, Default VOUT < VLOWV; RPRE-TERM = High Z (≥13kΩ); RISET 18 20 22 %IOUT-CC Setting = 1k %PRECHG Pre-charge current formula RPRE-TERM = KPRE-CHG (Ω/%) × %PRE-CHG (%) RPRE-TERM/KPRE-CHG VOUT < VLOWV, VIN = 5V, RPRE-TERM = 2k to 10kΩ; RISET = 1080Ω , RPRE-TERM = KPRE-CHG × 90 100 110 Ω/% %IFAST-CHG, where %IFAST-CHG is 20 to 100% KPRE-CHG % Pre-charge Factor VOUT < VLOWV, VIN = 5V, RPRE-TERM = 1k to 2kΩ; RISET = 1080Ω, RPRE-TERM = KPRE-CHG × 84 100 117 Ω/% %IFAST-CHG, where %IFAST-CHG is 10% to 20% TERMINATION – SET BY PRE-TERM PIN Termination Current Threshold, VOUT > VRCH; RPRE-TERM = High Z (≥13kΩ); RISET = 9 10 11 %IOUT-CC Default Setting 1k %TERM Termination Current Threshold RPRE-TERM = KTERM (Ω/%) × %TERM (%) RPRE-TERM/ KTERM Formula VOUT > VRCH, VIN = 5V, RPRE-TERM = 2k to 10kΩ ; RISET = 750Ω; KTERM × %IFAST-CHG, where 182 200 216 %IFAST-CHG is 10 to 50% KTERM % Term Factor Ω/% VOUT > VRCH, VIN = 5V, RPRE-TERM = 1k to 2kΩ ; RISET = 750Ω; KTERM × %IFAST-CHG, where 174 199 224 %IFAST-CHG is 5 to 10% Current for programming the term. IPRE-TERM and pre-chg with resistor. ITerm-Start is RPRE-TERM = 2k, VOUT = 4.15V 71 75 81 μA the initial PRE-TERM curent. %TERM Termination current formula RTERM/ KTERM % tDGL(TERM) Deglitch time, termination detected 29 ms Elevated PRE-TERM current for, ITerm-Start tTerm-Start, during start of charge to 80 85 92 μA prevent recharge of full battery, Elevated termination threshold initially tTerm-Start 1.25 min active for tTerm-Start 4 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): bq24050 bq24052 bq24055 |
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