This design note introduces the LTM8028, a 36V input, 5A µModule regulator combining switching and linear topologies for low noise and fast transient response.
The LTM8028 is a 36V input, 5A µModule regulator designed for precision data acquisition systems. It integrates a synchronous switching converter and a low noise linear regulator into a single 15mm x 15mm x 4.92mm BGA package to achieve low output noise, fast transient response, and high efficiency. The device operates from an input range of 6V to 36V with a programmable output voltage between 0.8V and 1.8V.
| Input Voltage Range | 6V to 36V |
|---|---|
| Output Voltage Range | 0.8V to 1.8V |
| Output Current | 5A |
| Operating Temperature Range | -40° C to 125° C |
| Switching Frequency Range | 200kHz to 1MHz |
| Package Dimensions | 15 mm × 15 mm × 4.92 mm |
It combines a synchronous switching converter and a low noise linear regulator into a single part.
By connecting the SENSEP pin directly to the load point.
It can be digitally programmed in 50mV increments using the VO0, VO1, and VO2 inputs.
The SINAD performance is only 0.03dB worse than the LDO baseline.