This document describes the California Micro Devices Corp.'s 400mA SmartORTM dual regulator with VAUX switch. The product provides continuous 3.3V output from three inputs and offers a complete power management solution. It is suitable for applications such as PCI adapter cards, network interface cards, and systems with standby capabilities.
The CMPWR330 is a dual input voltage regulator designed to deliver up to 400mA continuously at 3.3V from three independent input sources: Vcc (5V), Vspy (Standby/5V), and Vaux (Auxiliary/3.3V). The device prioritizes power supply selection automatically, using the primary Vcc or standby Vspy when present, and switching to a low-impedance direct connection between Vaux and Vout only when other supplies are absent.
| Output Current (Iload) | 0 to 400 mA |
|---|---|
| Package Type | 8-pin Power SOIC |
| Operating Temperature Range | -40 to 70 °C (Ambient) |
The device can deliver up to 400mA continuously at 3.3V.
The device provides a low impedance direct connection from Vaux to Vout.