The LTM®8027 is a complete 4A, DC/DC step-down power supply. Included in the package are the switching controller, power switches, inductor and all support components. Operating over an input voltage range of 4.5V to 60V (7.5V minimum voltage to start), the LTM8027 supports output voltages up to 24V, and a switching frequency range of 100kHz to 500kHz, each set by a single resistor. Only the bulk input and output fi lter capacitors are needed to fi nish the design.
The low profi le package (4.32mm) enables utilization of unused space on the bottom of PC boards for high density point of load regulation. A built-in soft-start timer is adjustable with a small capacitor.
The LTM8027 is packaged in a thermally enhanced, compact (15mm × 15mm) and low profi le (4.32mm) over-molded land grid array (LGA) package suitable for automated assembly by standard surface mount equipment. The LTM8027 is Pb-free and RoHS compliant.

*Complete Switch Mode Power Supply
*Wide Input Voltage Range: 4.5V to 60V (7.5V Minimum Voltage to Start)
*Wide Output Voltage Range: 2.5V to 24V (See Table 2)
*4A Output Current
*Programmable Soft-Start
*10μA Shutdown Supply Current
*Selectable Switching Frequency Current Mode Control
*Up to 95% Effi ciency
*Pb-Free (e4) RoHS Compliant Package with Gold Pad Finish
*Tiny, Low Profi le (15mm × 15mm × 4.32mm) Surface Mount LGA Package

*12V and 42V Automotive and Heavy Equipment
*48V Telecom Power Supplies
*Avionics and Industrial Control Systems
*Distributed Power Converters


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