Seagate ST251 - Figure 1. Typical; Figure 2. Typical Power-On Sequence

FIGURE 1: Typical + 12 VDC Start-Up Current Profile
1,63A
f·
- ~- -
I
i i
I 1,14A
SECONDS
FIGURE 2: Typical Power-On Sequence
~ ...
- ,
1,03A
+5VDC
4SA +12 VDC
rr rr
_--_);1---------1))1------------
DC ON
I- 12 sec. 1yp. ---.j r
ROTATIONAL SPEED ~I------------
REGULATED ±O.S% (
)
r--10 sec. typo ---.j
- TRACK"
~ .J~~ __________ __
------------)~.J~----~ l
- READY
20 msec, max.H
-
---------~(,..(-----I(,..(------~
).1 }.;
- SEEK COMPLETE
5 msec. max, H
------------)~~,..(----~,c,..(------~
1"141-----------25 sec, max·-----~ .. I
ST2511251 RI277R Product Manual, Rev.A
1-9