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BQ2002ESN Datasheet(PDF) 3 Page - Texas Instruments |
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BQ2002ESN Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 13 page  3 bq2002E/G OSC TM CC LED VCC VSS BAT INH Clock Phase Generator Timing Control Sample History A to D Converter MCV Check Power Down TS Bd2002CEG.eps Voltage Reference Power-On Reset TCO Check HTF Check LBAT Check Charge-Control State Machine PVD, - V ALU Figure 3. Block Diagram Chip on VCC 4.0V Battery Voltage too High? Battery Temperature? Charge Pending Fast LED = Low SD2002C.eps Battery Voltage too Low? VBAT < 2V VTS < 0.6 VBAT > 0.175 VBAT < 2V, and VTS > VCC/2 VBAT > 2V Top-off LED = Z Trickle LED = Flash Trickle LED = Z VBAT > 2V VBAT 2V VCC VTS > 0.6 VCC VCC, 0.175 VCC < VBAT VCC VBAT < 0.175 VBAT > 2V or VTS < VCC/2 or ((PVD or - V or Maximum Time Out) and TM Low) VBAT VTS Maximum Time Out 2V or VCC/2 or (PVD or - Maximum Time Out) and TM = Low V or Figure 2. State Diagram |
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