LM2926T中文资料Low Dropout Regulator with Delayed Reset数据手册TI规格书

描述 Description

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.

特性 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 testedApplications
Battery operated equipment
Microprocessor-based systems
Portable instruments