General Description
●The LM2926 is a 5V, 500 mA, low dropout regulator with delayed reset. The microprocessor reset flag is set low by thermal shutdown, short circuits, overvoltage conditions, dropout, and power-up. After the fault condition is corrected, the reset flag remains low for a delay time determined by the delay capacitor. Hysteresis is included in the reset circuit to prevent oscillations, and a reset output is guaranteed down to 3.2V supply input. A latching comparator is used to discharge the delay capacitor, which guarantees a full reset pulse even when triggered by a relatively short fault condition. A patented quiescent current reduction circuit drops the ground pin current to 8 mA at full load when the input-output differential is 3V or more.
●Features
●5% output accuracy over entire operating range
●Dropout voltage typically 350 mV at 500 mA output
●Externally programmed reset delay
●Short circuit proof
●Reverse battery proof
●Thermally protected
●LM2926 is pin-for-pin compatible with the LM2925
●P+ Product Enhancement tested
●Applications
●Battery operated equipment
●Microprocessor-based systems
●Portable instruments
