19-3776; Rev 0; 7/05
Over
voltage-Protection Controller with Internal Disconnect Switch
General Description
The MAX4880 is an over
voltage-protection controller with an internal current-limited switch that can be configured as a low-cost battery charger.
When the input
voltage exceeds the over
voltage trip level (5.
7V), or drops below the under
voltage-lockout level (4.
2V), the MAX4880 turns off the external n-channel
MOSFET and asserts an under
voltage/over
voltage flag indicator (FLAGV) low to notify the processor.
The MAX4880 internal current-limited switch limits the charge current flowing to the battery to 525mA.
The switch opens when the battery
voltage reaches its fullcharged state (4.
2V),...