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BQ2085 Datasheet(PDF) 3 Page - Texas Instruments |
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BQ2085 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 56 page  bq2085 SLUS541 – OCTOBER 2002 3 www.ti.com Terminal Functions TERMINAL I/O DESCRIPTION NAME No. I/O DESCRIPTION CLKOUT 35 I 32.768-kHz output to the bq29311 DISP 17 I Display control for the LED drivers LED1 through LED5 FILT 32 I Analog input connected to the external PLL filter EVENT 18 I Input from bq29311 XALERT output LED1 24 O LED2 23 O LED3 22 O LED display segments that each may drive an external LED LED4 21 O LED dis lay segments that each may drive an external LED LED5 20 O MRST 26 I Master reset input that forces the device into reset when held high N/C 4, 5, 7, 13, 14, 25, 36, 37 – No connection OC 3 I Analog input for auto ADC offset compensation; should be connected to VSSA RBI 9 I Register backup that provides backup potential to the bq2085 data registers during periods of low operating voltage. RBI accepts a storage capacitor or a battery input. ROSC 33 I Internal time base bias input SAFE 12 O Output for additional level of safety protection; e.g., fuse blow. SCLK 6 O Communication clock to the bq29311 SDATA 10 I/O Data transfer to and from bq29311 SMBC 15 I/O SMBus clock open-drain bidirectional pin used to clock the data transfer to and from the bq2085 SMBD 16 I/O SMBus data open-drain bidirectional pin used to transfer address and data to and from the bq2085 SR1 28 I Connections for a small value sense resistor to monitor the battery charge and discharge current flow SR2 27 I Connections for a small-value sense resistor to monitor the battery charge- and discharge-current flow TS 2 I Thermistor voltage input connection to monitor temperature VDDA 31 I Positive supply for analog circuitry VDDD 8 I Positive supply for digital circuitry and I/O pins VIN 1 I Single cell voltage input from the bq29311 VSSA 30, 34 I Negative supply for analog circuitry VSSD 11, 19, 38 I Negative supply for digital circuitry VSSP 29 I Negative supply for output circuitry |
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Similar Description - BQ2085 |
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