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BQ24750 Datasheet(PDF) 7 Page - Texas Instruments |
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BQ24750 Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 39 page  bq24750 www.ti.com............................................................................................................................................... SLUS735D – DECEMBER 2006 – REVISED MARCH 2009 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 VREF REGULATOR VVREF_REG VREF regulator voltage VACDET > 0.6 V, 0-30 mA 3.267 3.3 3.333 V IVREF_LIM VREF current limit VVREF = 0 V, VACDET > 0.6 V 35 75 mA REGN REGULATOR VREGN_REG REGN regulator voltage VACDET > 0.6 V, 0-75 mA, PVCC > 10 V 5.6 5.9 6.2 V IREGN_LIM REGN current limit VREGN = 0 V, VACDET > 0.6 V 90 135 mA ADAPTER CURRENT SENSE AMPLIFIER VACP/N_OP Input common mode range Voltage on ACP/ACN 0 24 V VIADAPT IADAPT output voltage range 0 2 IIADAPT IADAPT output current 0 1 mA AIADAPT Current sense amplifier voltage gain AIADAPT = VIADAPT / VIREG_DPM 20 V/V VIREG_DPM = 40–100 mV –2% 2% VIREG_DPM = 20 mV –3% 3% Adapter current sense accuracy VIREG_DPM = 5 mV –25% 25% VIREG_DPM = 1.5 mV –33% 33% IIADAPT_LIM Output current limit VIADAPT = 0 V 1% mA CIADAPT_MAX Maximum output load capacitance For stability with 0 mA to 1 mA load 100 pF ACDET COMPARATOR ACDET adapter-detect rising Min voltage to enable charging, VACDET VACDET_CHG 2.376 2.40 2.424 V threshold rising VACDET_CHG_HYS ACDET falling hysteresis VACDET falling 40 mV ACDET rising deglitch VACDET rising 518 700 908 ms ACDET falling deglitch VACDET falling 7 9 11 ms Min voltage to enable all bias, VACDET VACDET_BIAS ACDET enable-bias rising threshold 0.56 0.62 V rising 0.68 VACDET_BIAS_HYS Adapter present falling hysteresis VACDET falling 20 mV ACDET rising deglitch VACDET rising 10 µs ACDET falling deglitch VACDET falling 10 µs PVCC / BAT COMPARATOR (REVERSE DISCHARGING PROTECTION) Differential Voltage from PVCC to VPVCC-BAT_OP –20 V BAT 24 VPVCC-BAT_FALL PVCC to BAT falling threshold VPVCC – VBAT to turn off ACFET 140 185 240 mV VPVCC-BAT__HYS PVCC to BAT hysteresis 50 mV PVCC to BAT Rising Deglitch VPVCC – VBAT > VPVCC-BAT_RISE 7 9 11 ms PVCC to BAT Falling Deglitch VPVCC – VBAT < VPVCC-BAT_FALL 6 µs INPUT UNDERVOLTAGE LOCK-OUT COMPARATOR (UVLO) UVLO AC Undervoltage rising threshold Measured on PVCC 3.5 4 4.5 V UVLOHYS AC Undervoltage hysteresis, falling 260 mV ACN / BAT COMPARATOR VACN-BAT_FALL ACN to BAT falling threshold VACN – VBAT to turn on BATDRV 175 285 340 mV VACN-BAT_HYS ACN to BAT hysteresis 50 mV ACN to BAT rising deglitch VACN – VBAT > VACN-BAT_RISE 20 µs ACN to BAT falling deglitch VACN – VBAT < VACN-BAT_FALL 6 µs BAT OVERVOLTAGE COMPARATOR 104 VOV_RISE Overvoltage rising threshold As percentage of VBAT_REG % 102 VOV_FALL Overvoltage falling threshold As percentage of VBAT_REG % Copyright © 2006–2009, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s) :bq24750 |
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