LSI 25083 manual Power Supply Requirements for SAS 9280 RAID Controllers

–During fast charging of the battery pack: 230mA in +12V current

3.3.4.6Operating and Non-operating Conditions for the SAS 9261 RAID Controller

For the SAS 9261 RAID controllers, the operating (thermal and atmospheric) conditions are:

•Relative humidity range is 5 percent to 90 percent noncondensing (20 percent to 80 percent noncondensing for the RAID controllers)

•Airflow must be at least 200 linear feet per minute (LFPM) to avoid operating the LSISAS2108 processor above the maximum ambient temperature

• Temperature range: +10 ° C to +60 ° C without battery backup unit

•Temperature range: +10 ° C to +44.5 ° C with iBBU battery backup

The parameters for the non-operating (such as storage and transit) environment for these controllers are:

•Temperature range: −30° C to +80° C without the battery backup unit

•Temperature range: 0° C to +45° C with the battery backup unit

3.3.5Power Supply Requirements for SAS 9280 RAID Controllers

All power is supplied to the SAS 9280-8e and SAS 9280DE-8e RAID controllers through the PCI Express 3.3V rails and the 12V rail. Onboard switching regulator circuitry operating from the 3.3V rails and the 12V rail provide the necessary voltages. The following states determine the typical current consumption of the controller:

•State 1: During a hard reset

•State 2: During a disk stress test

•State 3: While sitting idle at the DOS prompt

The supply voltages are 12V ± 8 percent (from PCI edge connector only) and 3.3V ± 9 percent (from PCI edge connector only). Table 3.13 lists the power supply for the controller for each of the three states at the different voltages.

Technical Specifications 3-21

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