LSI 25083 manual Power Supply Requirements for the SAS 9261 RAID Controller

• 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

3.3.4.5Power Supply Requirements for the SAS 9261 RAID Controller

All power is supplied to the SAS 9261 RAID controller 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 drive 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 3.11 lists the power supply for the RAID controller for each of the three states at the different voltages.

Table 3.12 Power Supply for SAS 9261 RAID Controllers

PCI Edge Connector	State 1	State 2	State 3
3.3V supply	330mA	330mA	330mA
+12V supply	1.00A	1.81A	1.53A
3.3V auxiliary supply	30mA	30mA	30mA

Note: +12V is used in the charging circuitry for the battery pack on the optional iBBU battery-backed daughter card. If the BBU daughter card is mounted, the following power consumption figures apply:

–During trickle charging of the battery pack: N/A (no trickle charge for Li-ION)

3-20	MegaRAID SAS RAID Controller Characteristics
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