This document introduces the features and characteristics of the XXX brand XXX series XXX model products.
The CMPWR300 is an 8-pin Power SOIC package designed as a complete power management solution for applications like PCI adapter cards and network interface cards. It provides a continuous 3.3V output by intelligently selecting among three independent input voltage sources based on priority: Vsec, Vby, and Vin by.
The device features built-in hysteresis to ensure smooth transitions between supplies without loss of output regulation. When the primary or standby supply is present, it regulates the output; otherwise, an integrated switch with very low resistance (0.12Ω typical) connects the auxiliary input directly to the output.
| Package Type | 8-pin Power SOIC |
|---|---|
| Operating Temperature Range | 0 to +70 °C (Ambient) |
The device provides a low impedance direct connection from Vsec to Vby.
The threshold is typically set to 4.2V.