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MAX4880

Maxim Integrated Products
Part Number MAX4880
Manufacturer Maxim Integrated Products
Description Overvoltage-Protection Controller
Published Jun 19, 2007
Detailed Description 19-3776; Rev 0; 7/05 Overvoltage-Protection Controller with Internal Disconnect Switch General Description The MAX4880 ...
Datasheet PDF File MAX4880 PDF File

MAX4880
MAX4880

Overview
19-3776; Rev 0; 7/05 Overvoltage-Protection Controller with Internal Disconnect Switch General Description The MAX4880 is an overvoltage-protection controller with an internal current-limited switch that can be configured as a low-cost battery charger.
When the input voltage exceeds the overvoltage trip level (5.
7V), or drops below the undervoltage-lockout level (4.
2V), the MAX4880 turns off the external n-channel MOSFET and asserts an undervoltage/overvoltage 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), and a flag (BAT_OK) asserts to notify the processor.
The MAX4880 includes a switchcontrol input (CB) to turn off the internal current-limited switch, regardless of the battery voltage.
The MAX4880 also features a built-in startup delay that allows the adapter voltage to settle down before turning o...


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