Physical/Electrical Specifications; Ac Power Requirements; Dc Power Requirements - Seagate ST34520N - Medalist 4.55 GB Hard Drive Product Manual

Medalist Pro Product Manual, Rev. D
6.0

Physical/electrical specifications

This section provides information relating to the physical and electrical characteristics of Medalist Pro drives.
6.1

AC power requirements

None.
6.2

DC power requirements

The voltage and current requirements for a single drive are shown in the following table. Values indicated apply
at the drive power connector. The single ended power requirements includes the internal disc drive SCSI I/O
termination. The table shows current values in Amperes.
Table 2a: DC power requirements for N/W/WC models
Voltage
Regulation
Maximum operating current DC
Average idle current DCX
Maximum starting current
(peak DC) DC
(peak AC) AC
Delayed motor start (max) DC
Peak operating current
Typical DCX
Maximum DC
Maximum (Peak)
Table 2b: DC power requirements for LW/LC models
Voltage
Regulation
Maximum operating current DC
Average idle current DCX
Maximum starting current
(peak DC) DC
(peak AC) AC
Delayed motor start (max) DC
Peak operating current
Typical DCX
Maximum DC
Maximum (Peak)
Notes for Tables 2a and 2b.
[1] Measured with average reading DC ammeter. Instantaneous +12 V current peaks will exceed these val-
ues.
[2] A –10% droop is permissible during initial start of spindle, and must return to ±5% before 7,200 rpm is
reached. The ±5% must be maintained after the drive signifies that its power-up sequence has been com-
ST39140
N/W/WC
Notes Single-ended
+5 V +12 V
[5] ±5% ±5%[2]
[1] 0.55 2.4
[1] 0.51 0.81
[3] 2.5
[3]
[1][4] 0.51 0.13
[1][6] 0.51 0.96
[1] 0.55 1.17
ST39140
LW/LC
Notes LVD
+5 V +12 V
[5] ±5% ±5%[2]
[1] 0.81 2.4
[1] 0.53 0.90
[3] 2.5
[3]
[1][4] 0.51 0.16
[1][6] 0.58 1.0
[1] 0.81 1.53
ST36530 ST34520
N/W/WC N/W/WC
Single-ended Single-ended
+5 V +12 V +5 V
±5% ±5% [2] ±5%
0.55 2.4 0.55
0.51 0.81 0.51
2.5
0.51 0.13 0.51
0.51 0.96 0.51
0.55 1.17 0.55
ST34520
LW/LC
LVD
+5 V +12 V
±5% ±5% [2]
0.81 2.4
0.53 0.90
2.5
0.51 0.16
0.58 1.0
0.81 1.37
19
+12 V
±5% [2]
2.4
0.81
2.5
0.13
0.96
1.17