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SS4036G Arkusz danych(PDF) 1 Page - Silicon Standard Corp. |
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SS4036G Arkusz danych(HTML) 1 Page - Silicon Standard Corp. |
1 / 9 page www.SiliconStandard.com 1 of 9 SS4036G 1/09/2006 Rev.3.01 Two-Cell Li-Ion and Li-Polymer Charge Management IC Pb-free, RoHS compliant. DESCRIPTION The SS4036G is a charging control IC designed for battery packs with two cells in series. When multiple cells in a battery pack are connected in series, the weakest cell determines the overall pack capacity. The SS4036G monitors the voltage of each cell toensure that no cell is overcharged. The pulse width modulation (PWM) output can be used as either a linear or switching charge-control circuit. The small 8-pin TSSOP package is ideal for compact battery packs used for portable applications. The SS4036G continuously monitors each cell voltage, cell current and the battery temperature. Any unspecified condition will stop the charging to to protect the battery cells. An external negative- temperature-coefficient thermistor is used as a sensor to monitor the battery pack temperature. To be safe, charging is suspended if the voltage of the temperature sense input pin is higher than Min Temp Threshold (VTmin) or lower than Max Temp Threshold (VTmax). When the battery temperature is within the safe zone, the SS4036G charges the battery in three phases: pre-charging, constant-current, or constant- voltage. If the battery voltage is less than 3.1V, the SS4036G pre-charges the battery with a low current. After the pre-charging, the SS4036G applies a constant current to the battery. The value of this constant current is determined by the value of the current sense resistor. When the battery voltage is above the threshold, the SS4036G begins constant-voltage charging until the battery is fully charged. The battery is fully charged when the current drops down to the termination threshold. FEATURES Optional external thermistor monitors the pack temperature Conditioning charge for reviving deeply discharged cells Timer function available to limit the charging time Charge management for two-cell Li-Ion or Li-Polymer battery packs Individual cell monitoring - avoids over-charging TSSOP-8 small industry-standard package PRODUCT SUMMARY |
Podobny numer części - SS4036G |
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Podobny opis - SS4036G |
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