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UB2012 Datasheet(PDF) 8 Page - Unisonic Technologies

No. de pieza UB2012
Descripción Electrónicos  ADVANCED LINEAR CHARGE MANAGEMENT IC FOR SINGLE
PDF  17 Pages
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Fabricante Electrónico  UTC [Unisonic Technologies]
Página de inicio  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UB2012 Datasheet(HTML) 8 Page - Unisonic Technologies

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UB2012
Preliminary
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
8 of 17
www.unisonic.com.tw
QW-R121-018 .b
APPLICATION INFORMATION(Cont.)
QUALIFICATION AND PRECHARGE
When the battery is present and power is applied, the UTC UB2012 starts a charge-cycle. Charge qualification
is affected by battery temperature and voltage. If the battery temperature is out of the VTS1 to VTS2 range; the UB2012
will suspend charge. In addition, if the battery voltage is below the precharge threshold V(min), the UB2012 uses
precharge to condition the battery. The conditioning charge rate I(PRECHG) is set at approximately 10% of the
regulation current, and the conditioning current minimizes heat dissipation in the external pass-element during the
beginning of charge, refer to Figure 3.



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