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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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AS3525 데이터시트(PDF) 152 Page - ams AG |
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AS3525 데이터시트(HTML) 152 Page - ams AG |
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152 / 194 page  AS3525-A/-B C22O22 Data Sheet, Confidential © 2005-2009, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved. www.austriamicrosystems.com Revision 1.13 152 - 194 7.4.15 Charger 7.4.15.1 General This block can be used to charge a 4V Li-Io accumulator. It supports constant current and constant voltage charging modes with adjustable charging currents (50 to 400mA) and maximum charging voltage (3.9 to 4.25V). Figure 57 Charger States 7.4.15.2 Trickle Charge If the battery voltage is below 3V, the charger goes automatically in trickle charge mode with 50mA charging current and 3.9V endpoint voltage. In this mode charging current and voltage are not precise, but provide a charger function also for deep discharged batteries. The temperature supervision is not enabled in trickle charge mode. 7.4.15.3 Temperature Supervision This charger block also features a 15uA supply for an external 100k NTC resistor to measure the battery temperature while charging. If the temperature is too high, an interrupt can be generated. |
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