Rainbow-electronics DS2710 Manual de usuario

General DescriptionThe DS2710 is ideal for in-system charging of single-cellnickel metal hydride (NiMH) cells for low-currentportable applications. In

DS2710Timeout SelectionFAST-CHARGE state normally operates until -ΔV termi-nation. In the event that termination does not occur cor-rectly, a safety t

DS2710Single-Cell NiMH Charger______________________________________________________________________________________ 11DS2710VDDTHMSTATUSVP1VN1VN0TMR

DS2710Single-Cell NiMH ChargerMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. N

DS2710Single-Cell NiMH Charger2 _______________________________________________________________________________________2 _____________________________

DS2710Single-Cell NiMH Charger_______________________________________________________________________________________ 3Note 1: Voltages relative to VS

DS2710Single-Cell NiMH Charger4 _______________________________________________________________________________________Pin DescriptionPIN NAME FUNCTIO

Detailed DescriptionCharge Algorithm OverviewThe DS2710 controls switch-mode topology charging ofa single NiMH cell from a voltage-regulated chargesou

DS2710Single-Cell NiMH Charger6 _______________________________________________________________________________________PRECHARGECS = ACTIVE 25% DFSTAT

the MAINTENANCE state. If at any time during FAST-CHARGE the cell voltage exceeds VMAX-CHARGE, theDS2710 determines that the cell is either overcharge

DS2710Charge-Current RegulationThe DS2710 regulates charge current by maintaining aconstant average voltage across an external senseresistor connected

TOP-OFF complete normally if the cell temperatureremains below this threshold.Used with a 10kΩ resistor, the Semitec 103AT-2 pro-vides approximately 0