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BQ24750RHDTG4 Datasheet(PDF) 8 Page - Texas Instruments |
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BQ24750RHDTG4 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 39 page bq24750 SLUS735D – DECEMBER 2006 – REVISED MARCH 2009............................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS (continued) 7 V ≤ VPVCC ≤ 24 V, 0°C < TJ < 125°C, typical values are at TA = 25°C, with respect to AGND (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CHARGE OVERCURRENT COMPARATOR 145 VOC Charge overcurrent falling threshold As percentage of IREG_CHG % Minimum Current Limit (SRP-SRN) 50 mV CHARGE UNDERCURRENT COMPARATOR (SYNCHRONOUS TO NON-SYNCHRONOUS TRANSITION) Changing from synchronous to VISYNSET_FALL Charge undercurrent falling threshold 9.75 13 16.25 mV non-sysnchronous VISYNSET_HYS Charge undercurrent rising hysteresis 8 mV Charge undercurrent, falling-current 20 deglitch VIREG_DPM < VISYNSET µs Charge undercurrent, rising-current 640 deglitch INPUT OVERPOWER COMPARATOR (ACOP) ACOC Gain for initial ACOC current Begins 700 ms after ACDET % VACOC limit limit (Percentage of programmed Input current limited to this threshold for 150 VIREG_DPM VIREG_DPM) fault protection Maximum ACOC input current limit Internally limited ceiling VACOC_CEILING 100 mV (VACP–VACN)max VACOC_MAX = (VACP–VACN)max ACOP Latch Blankout Time with Begins 700 ms after ACDET ACOC active (does not allow ACOP latch-off, and no 2 ms (begins 700 ms after ACDET) ACOP source current) ACOP pin latch-off threshold voltage VACOP (See ACOP in Terminal Functions 1.95 2 2.05 V table ) Current source on when in ACOC limit. Gain for ACOP Source Current when KACOP Function of voltage across power FET 18 µA / V in ACOC IACOP_SOURCE = KACOP ×(VPVCC -VACP) ACOP Sink Current when not in ACOC IACOP_SINK Current sink on when not in ACOC 5 µA ACOP Latch is reset by going below ACDET or UVLO INPUT OVERVOLTAGE COMPARATOR (ACOV) AC Overvoltage rising threshold on VACOV ACDET Measured on ACDET 3.007 3.1 3.193 V (See ACDET in Terminal Functions) AC Overvoltage rising deglitch 1.3 VACOV_HYS ms AC Overvoltage falling deglitch 1.3 THERMAL SHUTDOWN COMPARATOR TSHUT Thermal shutdown rising temperature Temperature Increasing 155 °C TSHUT_HYS Thermal shutdown hysteresis, falling 20 °C THERMISTER COMPARATOR (TS) 73.8 VLTF Cold temperature rising threshold As percentage to VVREF 72.5% 74.2% % VLTF_HYS Rising hysteresis As percentage to VVREF 0.5% 1% 1.5% 29.3 VTCO Cut-off temperature rising threshold As percentage to VVREF 28.7% 29.9% % 34.4 VHTF Hot temperature rising threshold As percentage to VVREF 33.7% 35.1% % Deglitch time for temperature out of VTS > VLTF, or VTS < VTCO, or 10 range detection VTS < VHTF ms Deglitch time for temperature in valid VTS > VLTF – VLTF_HYS or VTS > VTCO, 10 range detection or VTS > VHTF 8 Submit Documentation Feedback Copyright © 2006–2009, Texas Instruments Incorporated Product Folder Link(s) :bq24750 |
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