LT1173 - Micropower DC/DC Converter Adjustable and Fixed 5V, 12V; Package: PDIP; Pins: 8; Temperature Range: 0°C to 70°C

Switching Regulator, Current-mode, 5.5A, 115kHz Switching Freq-Max, BIPolar, PZFM5
LT1172 - 100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators; Package: DD PAK; Pins: 5; Temperature Range: -40°C to 85°C
LT1170 - 100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators; Package: TO-220; Pins: 5; Temperature Range: -40°C to 85°C