SI9731DQ VISHAY [Vishay Siliconix], SI9731DQ Datasheet
SI9731DQ
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SI9731DQ Summary of contents
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Controlled Battery Charger For 1-Cell Li-ion or 1-Cell to 3-Cell NiCd/NiMH Batteries DESCRIPTION Si9731 is a chemistry independent battery charger designed to pulse charge 1-cell to 3-cell NiCd/NiMH or 1-cell Li-ion bat- teries. Battery charging is accomplished under direct ...
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Si9731 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Parameter Voltages Referenced to GND = CHARGER, (CVMODE) (TRICKLECHARGEEN (4.1 V_TAP) (VBAT+) (CHARGERPOWER_ON) V (TRICKLE_VBAT (CHARGERPRESENTIN) (CHARGERPOWER_ONIN) Maximum Input Current ...
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SPECIFICATIONS Parameter Quiescent Current (Normal Mode) Quiescent Current (Shutdown Mode) Feedback Resistor Battery Leakage Current Q1 ON Resistance Q2 ON Resistance Resistance Over Voltage Detect Threshold Over Voltage Detect Threshold Hysteresis Output High Leakage CHARGERPRESENT and Current ...
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... BAT+ 15 CHARGERPOWER_ON 16 CHARGERPRESENT www.vishay.com 4 TSSOP-16 CHARGERPRESENT = (XCHARGERPRESENT CHARGERPOWER_ON = (XCHARGERPOWER_ON BAT+ TRICKLE_V 4 13 Si9731DQ 4.1 V_TAP 5 12 GND 6 11 (N/ REF Top View Temperature Range - °C Temperature Range - °C Logic input for CHARGERPRESENT output External charger Master shutdown pin. Taking ON/OFF low shuts down the charger and quiescent current drops to under 1 µ ...
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TABLE 1: BATTERY CHARGING CONTROL LOGIC (NOMINAL VOLTAGE VALUES) TRICKLE V CVMODE CHARGER CHARGEEN Not Present X Not Present Charge Over Voltage X V > 12.8 V CHARGER X LOW HIGH LOW HIGH Present a OK ...
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Si9731 Vishay Siliconix TYPICAL CHARACTERISTICS 25 °C unless noted 4.22 4.1 TAP Open 4.20 4.18 4.16 4.14 4.12 4.1 TAP to V 4.10 4. CHARGER V (CV Mode) vs. V BAT 2.75 2.70 2.65 2.60 2.55 2.50 ...
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BLOCK DIAGRAM AND TYPICAL APPLICATION CIRCUIT 1 CHARGERPRESENTIN 2 CHARGERPOWER_ONIN 4 ON/OFF 1 MΩ 100 kΩ CHARGER 2 2.2 μfd 12 TRICKLECHARGEEN 6 CVMODE 7 MAINCHARGEEN Document Number: 71321 S-60869-Rev. B, 22-May-06 Latch ...
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Si9731 Vishay Siliconix DETAIL OPERATIONAL DESCRIPTION Si9731 is a chemistry independent battery charger designed for use with a system processor. For example, Si9731 can be integrated within a cellular phone whereby the fast charge and trickle (slow) charge modes can ...
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DETAIL OPERATIONAL DESCRIPTION 4.1 V TAP The Si9731’s internal feedback resistors are set to provide 4.2 V charge termination at V output if the 4.1 V BAT+ open circuit. Connecting the 4.1 V TAP Si9731 for 4.1 V charge termination ...
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Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description ...