LTC3707 - High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator; Package: SSOP; Pins: 28; Temperature Range: -40°C to 85°C

LTC3780 - High Efficiency, Synchronous, 4-Switch Buck-Boost Controller; Package: SSOP; Pins: 24; Temperature Range: -40°C to 85°C
LTC3783 - PWM LED Driver and Boost, Flyback and SEPIC Converter; Package: TSSOP; Pins: 16; Temperature Range: -40°C to 85°C

LTC3729 - 550kHz, PolyPhase, High Efficiency, Synchronous Step-Down Switching Regulator; Package: SSOP; Pins: 28; Temperature Range: -40°C to 85°C

Dual Switching Controller, Current-mode, 3A, 590kHz Switching Freq-Max, CMOS, PDSO28
LTC3778 - Wide Operating Range, No RSENSE Step-Down Controller; Package: TSSOP; Pins: 20; Temperature Range: -40°C to 85°C

LTC3721-1 - Push-Pull PWM Controller; Package: SSOP; Pins: 16; Temperature Range: -40°C to 85°C