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bq24741RHDR Datasheet(PDF) 8 Page - Texas Instruments |
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bq24741RHDR Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 30 page  bq24741 SLUS875A – MARCH 2009 – REVISED MARCH 2009 ...................................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS (continued) 8.0 V ≤ VPVCC ≤ 24 V, 0°C < TJ < +125°C, Fs=600 kHz, typical values are at TA = 25°C, with respect to AGND (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT AC CURRENT DETECT COMPARATOR (INPUT UNDER_CURRENT, ACIGOOD) VACIDET Adapter current detect falling VACI = 20 X IAC x RAC, falling edge 200 250 300 mV threshold VACIDE_HYS Adapter current detect hysteresis Rising edge 50 mV IADAPT rising 10 µs Adapter current detect deglitch IADAPT falling 10 µs PVCC / BAT COMPARATOR VPVCC_BAT_OP Differential Voltage from PVCC to -20 24 V BAT VPVCC-BAT_FALL PVCC to BAT falling threshold VPVCC – VBAT to disable charge 850 900 950 mV VPVCC-BAT__HYS PVCC to BAT hysteresis 200 225 250 mV PVCC to BAT rising deglitch VPVCC – VBAT > VPVCC-BAT_RISE 4.5 ms PVCC to BAT ralling deglitch VPVCC – VBAT < VPVCC-BAT_FALL 10 µs BAT OVERVOLTAGE COMPARATOR VOV_RISE Overvoltage rising threshold(5) As percentage of VBAT_REG 104 % VOV_FALL Overvoltage falling threshold(5) As percentage of VBAT_REG 102 % BATSHORT COMPARATOR VBATSHORT_RISE Battery rising voltage for BATSHORT 2 V/Cell exit VBATSHORT_FALL Battery falling voltage for BATSHORT 1.7 V/Cell entry CHARGE OVERCURRENT COMPARATOR VOC_peak Peak charge over-current threshold V(CSP-CSN), when VISET / VDAC < 0.8 90 110 130 mV V(CSP-CSN), when VISET / VDAC ≥ 0.8 100 125 150 mV CHARGE UNDERCURRENT PROTECTION COMPARATOR (UCP) VUCP Charge under-current threshold, V(CSP-CSN) from synchronous to 25 30 35 mV falling edge non-synchronous operation Charge under-current threshold, V(CSP-CSN) from non-synchronous to 35 40 45 mV rising edge synchronous operation Charge under-current rising deglitch 10 µs Charge under-current falling deglitch 320 µs INPUT OVERVOLTAGE COMPARATOR (ACOV) VACOV AC over-voltage rising threshold on Measure on ACDET pin 3.007 3.1 3.193 V ACDET VACOV_HYS AC over-voltage deglitch (rising edge) 650 µs AC over-voltage deglitch (falling 650 µs edge) INPUT UNDERVOLTAGE LOCK-OUT COMPARATOR (UVLO) VUVLO AC under-voltage rising threshold Measured on PVCC pin 7 8 9 V VUVLO_HYS AC under-voltage hysteresis, falling 260 mV INPUT LOW POWER MODE COMPARATOR (LPMOD) VACLP_HYS AC low power mode comparator 5% 7% internal hysteresis VACLP_OFFSET AC low power mode comparator 1 mV offset voltage (5) Verified by design 8 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s) :bq24741 |
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