TPPM0303 Single Output LDO 250mA Fixed(3.3V), Selectable 3.3V or Dual 5V Input Reverse Current Blocking
Texas Instruments
Texas Instruments - TPPM0303DG4
$2.07 - $3.36
Texas Instruments - TPPM0303
$1.64 - $4.64
Texas Instruments - TPPM0303DR
$1.80 - $3.36