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SM6780A
Ni-MH/Ni-Cd Battery Charger IC
The SM6780A is a quick charge control IC for Nickel Metal Hydride (Ni-MH)
and Nickel-Cadmium (Ni-Cd) rechargeable batteries. It supports
quick charge, supplemental and pulse trickle charging modes. The
charging mode is selected automatically in response to the battery
voltage, temperature and charging time. The quick charge uses
either negative delta voltage detection (-ΔV),
temperature detection (ΔT/Δt),
or charging time cutoff to control the charging process. In addition,
the quick charge mode can be placed on hold, if the battery voltage
or battery temperature are abnormal, until normal conditions are
restored. The SM6780A requires few external components to realize
a high-stability quick charge battery charger.
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Ni-MH/Ni-Cd battery quick charge control |
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-ΔV,
ΔT/Δt,
and maximum charge time cutoffs |
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3 charge modes (quick charge, supplemental, pulse trickle charge) |
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3 selectable charge times (80, 120, and 240 minutes) |
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Charge condition LED indicator output (on, pulsed, off) |
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Low power dissipation mode |
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4.0 to 5.5V operating supply voltage |
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300sec (typ) -ΔV detection invalid time |
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8mV (typ) -ΔV detection accuracy |
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25mV/min (typ) ΔT/Δt detection accuracy |
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Package:SOP-8-052044-1 |
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Datasheet(PDF 124KB)
