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
Amps
Maximum operating current11.32 0.91 1.65 0.91
Maximum starting current
Peak DC3, 61.3 2.18 1.43 2.18
Peak AC3– 3.1 – 3.1
Delayed motor start (max)41.25 1.5 1.31 1.5
Peak operating current
Typ DC1,10 1.3 0.84 1.6 0.84
Max DC11.32 0.91 1.65 0.91
Max (peak) 1.4 1.85 2.4 1.85
Track following (DC)
at OD11.3 0.78 1.4 1.85
at ID11.3 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 DC11.3 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.