dangerousprototypes.com introduces us to a bunch of new and wonderful voltage regulator chips. Tiny regulators, high current regulators, and high voltage regulators.
TPS84620: 4.5V to 14.5V input, 6A switching regulator needs only three external parts
MAX15040: 2.4V to 3.6V input, 4A switching regulator is the smallest yet
MAX15050/MAX15051: 2.9V to 5.5V input, 4A switching regulator
TPS7A4001 100V input, 50mA very high voltage linear regulator
Voltage regulator chip roundup – [Link]