Seagate ST12450W/WD manual Amps

ST12450W/WD Installation Guide, Rev. B				15
DC power requirements
	Single-ended		Differential
	+5V	+12V	+5V	+12V
Voltage regulation5	± 5%	± 5%2	± 5%	± 5%2
Maximum operating current1		Amps
	1.32	0.91	1.65	0.91
Maximum starting current
Peak DC3, 6	1.3	2.18	1.43	2.18
Peak AC3	–	3.1	–	3.1
Delayed motor start (max)4	1.25	1.5	1.31	1.5
Peak operating current
Typ DC1,10	1.3	0.84	1.6	0.84
Max DC1	1.32	0.91	1.65	0.91
Max (peak)	1.4	1.85	2.4	1.85
Track following (DC)
at OD1	1.3	0.78	1.4	1.85
at ID1	1.3	0.82	1.4	0.78
Read track
OD DC1, 13	1.4	0.81	1.9	0.81
AC	1.5	1.16	2.5	1.16
Seeking
Typical DC1, 12	1.3	1.06	1.4	1.06
Maximum DC1	1.3	1.14	1.44	1.14
Maximum (peak) AC	1.3	1.85	2.2	1.85

1Measured with an average reading DC ammeter. Instanta- neous +12V current peaks will exceed these values.