MAX1665S/V/X
19-1605; Rev 0; 1/00
Lithium-Ion Battery Pack Protector
General Description
The MAX1665 provides protection against over
voltage, under
voltage, overcharge current, and overdischarge current for 2-cell to 4-cell lithium-ion (Li+) battery packs.
Very low operating current ensures that cells are not overdischarged during long storage periods.
The MAX1665 controls two external N-channel
MOSFETs to limit the charge and discharge
voltages.
Charging is allowed when the per-cell
voltage is below +4.
3V.
When the
voltage on any cell rises above +4.
3V (over
voltage limit), the MAX1665 turns off the charge
MOSFET.
This safety feature prevents overcharge of any cell within the battery pack.
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