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BQ2012 Datasheet(PDF) 17 Page - Texas Instruments |
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BQ2012 Datasheet(HTML) 17 Page - Texas Instruments |
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17 / 20 page  17 bq2012 DC Electrical Characteristics (TA =TOPR) Symbol Parameter Minimum Typical Maximum Unit Notes VCC Supply voltage 3.0 4.25 6.5 V VCC excursion from < 2.0V to ≥ 3.0V initializes the unit. VOS Offset referred to VSR - ±50 ±150 µV DISP =VCC VREF Reference at 25°C 5.7 6.0 6.3 V IREF = 5 µA Reference at -40°C to +85°C 4.5 - 7.5 V IREF = 5 µA RREF Reference input impedance 2.0 5.0 - M Ω VREF = 3V ICC Normal operation - 90 135 µAVCC = 3.0V - 120 180 µAVCC = 4.25V - 170 250 µAVCC = 6.5V VSB Battery input - - 2.4 V RSBmax SB input impedance 10 - - M Ω 0 < VSB <VCC IDISP DISP input leakage - - 5 µAVDISP =VSS ILCOM LCOM input leakage -0.2 - 0.2 µA DISP =VCC RDQ Internal pulldown 500 - - K Ω VSR Sense resistor input -0.3 - 2.0 V VSR <VSS = discharge; VSR >VSS = charge RSR SR input impedance 10 - - M Ω -200mV < VSR <VCC VIH Logic input high VCC - 0.2 - - V PROG1–PROG6 VIL Logic input low - - VSS + 0.2 V PROG1–PROG6 VIZ Logic input Z float - float V PROG1–PROG6 VOLSL SEGX output low, low VCC - 0.1 - V VCC = 3V, IOLS ≤ 1.75mA SEG1–SEG6 VOLSH SEGX output low, high VCC - 0.4 - V VCC = 6.5V, IOLS ≤ 11.0mA SEG1–SEG6 VOHLCL LCOM output high, low VCC VCC - 0.3 - - V VCC = 3V, IOHLCOM = -5.25mA VOHLCH LCOM output high, high VCC VCC - 0.6 - - V VCC = 6.5V, IOHLCOM = -33.0mA IIH PROG1-6 input high current - 1.2 - µAVPROG =VCC/2 IIL PROG1-6 input low current - 1.2 - µAVPROG =VCC/2 IOHLCOM LCOM source current -33 - - mA At VOHLCH =VCC - 0.6V IOLS SEGX sink current - - 11.0 mA At VOLSH = 0.4V IOL Open-drain sink current - - 5.0 mA At VOL =VSS + 0.3V DQ, EMPTY, CHG VOL Open-drain output low - - 0.5 V IOL ≤ 5mA, DQ, EMPTY VIHDQ DQ input high 2.5 - - V DQ VILDQ DQ input low - - 0.8 V DQ RPROG Soft pull-up or pull-down resis- tor value (for programming) - - 200 K Ω PROG1–PROG6 RFLOAT Float state external impedance - 5 - M Ω PROG1–PROG6 Note: All voltages relative to VSS. |
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