Switching, DC-DC Regulator, Controller - MAX1939 and elements with same datasheet

MAX1939 - Switching, DC-DC Regulator, Controller

Possible substitute or elements with same package in depends of Datasheet 1

MAX1939	Switching, DC-DC Regulator, Controller
MAX1937	Switching, DC-DC Regulator, Controller
MAX1938	Switching, DC-DC Regulator, Controller