Fairchild
Integrated Load Switch with 500mA High Precision Current Limit
Rochester Electronics
0.53A BUF OR INV BASED PRPHL DRVR, DSO6, 2 X 2 MM, ROHS COMPLIANT, MLP-6
ON Semiconductor(安森美)
Power Switch ICs - Power Distribution Integrated w/500mA Precision Crnt Limit