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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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SS6782GNTR Arkusz danych(PDF) 9 Page - Silicon Standard Corp. |
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SS6782GNTR Arkusz danych(HTML) 9 Page - Silicon Standard Corp. |
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9 / 19 page  www.SiliconStandard.com 9 of 19 SS6782G 9/21/2005 Rev.3.01 PIN 14: SEL2 - Tri-level inputs, which jointly control the LED display mode and the duty of trickle charge after the completion of fast charge. PIN 9: ATS - The battery cell temperature of pack A is represented as a voltage input to the SS6782G on this pin. T he acceptable voltage range of the ATS pin is 0.29Vcc to 0.72Vcc. PIN 15: SEL1 - The same as pin 14. PIN 10: LEA1 - Open-draind outputs used to indicate the charging status of the battery pack A. PIN 16: GND - Power ground. PIN 17: LEB1 - Open-drain outputs used to indicate the charging status of battery pack B PIN 11: LEA2 - The same as pin 10. PIN 12: ICOA - Open-drain output, used to control the charging current of the battery pack A. PIN 18: LEB2 - The same as pin 17. PIN 19: ICOB - Open-drain output, used to control the charging current of the battery pack B. PIN 13: MODE - Determines the operating mode of the SS6782G. PIN 20: DSW - Controls the function of dis charge-before-charge of the battery pack B. (See discharge- before-charge subsection in the application information section). APPLICATION INFORMATION OPERATION Power-on and Battery Pre-qualification The SS6782G is a sequential charger, initiating charging on either battery pack A or B. When power is first applied to the SS6782G, all internal digital circuits of the SS6782G are reset by the internal power-on-reset circuitry, and the out put of LED‘s (depending on the setting of SEL1 and SEL2 pins) flash 3 times to indicate the ini tiation of power-on. If both battery pack A and B are present when V CC is applied to the SS6782G, the charging action begins with battery pack A if conditions are acceptable. The c ondition of battery pack A is examined through the ATS and ABV pins, while battery pack B is examined through the BTS and BBV pins. The acceptable limits of ABV and BBV are determined by the input voltage of SEL3 pin and the acceptable temperature sense voltage window for ATS and BTS of 0.29Vcc to 0.72Vcc. The SS6782G controls initiation of the charging action and checks for acceptable battery volt- age and temperature prior to fast charging. If the voltage of ABV or BBV does not fall within the predetermined acceptable limits, the corre- sponding battery pack enters a charging- suspended mode. If the voltage of ATS or BTS is outside the 0.29VCC to 0.72VCC window, the |
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