LM60430/40 Synchronous Buck Converters

Texas Instruments' LM60440 and LM60430 regulators are easy-to-use, synchronous step-down DC/DC converters that deliver best-in-class efficiency for rugged industrial applications. The LM60430 drives up to 3 A load current and the LM60440 is an extremely small 4 A step-down converter. The converters are available in an ultra-miniature WQFN package with wettable flanks and a standard QFN pinout with a thermal pad to enhance thermal performance. This enhanced QFN package features extremely small parasitic inductance and resistance, enabling very high efficiency while minimizing switch-node ringing and dramatically reducing EMI.

The LM60440/30 uses peak-current-mode control to automatically fold back frequency at light loads to ensure exceptional efficiency across the load range. The low power dissipation paired with a thermally optimized QFN package enables a power-dense solution size. The device requires few external components and has a pinout that is designed for a simple PCB layout. The small solution size and feature set are designed to simplify implementation for a wide range of end equipment.