Note l: The minimum load current is the mirumum current required to maintain regulation. Normally the current in the resistor divider used to set the output voltage is selected to meet the minimum load current requirement. Note 2: The VCONrROL pin current is the drive current requiredrfo t Yf t~eutteut t~7nsistor. This current will track output current with roughly a l:100 ratio. The minimum value is equal to the quiescent curren Note 3: This parameter is guaranteed by design and is not 1000/o production tested. Note 4: Dropout is defined as either the minimum control voltage, (VCONrROL) or minimum power voltage (VPOWER) to output voltage differential required to maintain l"/o regulation at a particular load current. Note 5: This parameter is guaranteed by design, but not parametrically tested in production. However, a 100'/o thermal shutdown functional test is performed on each'part. 2
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Reverse Battery Protection The MAX8873/MAX8874 have a unique protection scheme that limits the reverse supply current to less than lmA when either VIN or VSHDfalls below ground. The circuitry monitors the polarity of these two pins, dis- connecting the internal circuitry and parasitic diodes when the battery is reversed. This feature prevents the device from overheating and damaging the battery.