DC1738A

DC1738A demonstration circuit features the LTM8028, a μModule® step-down converter that integrates both a high efficiency switching regulator and a 5A UltraFast™ linear regulator, resulting in a low noise solution suitable for high speed data applications. The demo circuit is designed for an input voltage of 6V to 36V and an operating frequency of 250kHz. The output voltage is digitally programmable from 0.8V to 1.8V in 50mV increments by adjusting the three tri-state inputs VO0, VO1, and VO2. The user may adjust the output voltage over a continuous ±10% range by applying a voltage to MARGA. A PGOOD signal indicates that the output is within 10% of the target voltage. The SENSEP pin creates a Kelvin sense connection to account for voltage drops due to PCB resistances between the regulator and the load.

• Typical output voltage of 1.8V