IBM DJSA-210 Hard Drive Specifications - Page 39

DC power requirements, Power Supply Ripple 0-20 MHz

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6.2 DC power requirements Connection to the product should be made in isolated secondary circuits (SELV). The voltage specifications are applied at the power connector of the drive. Item Nominal Supply Power Supply Ripple (0-20 MHz) Tolerance Supply rise time Supply Current (+5.00 V dc case) Requirements +5 Volt dc 100 mV p-p max. ±5% 7-100 ms Population Mean (nominal condition) Notes *1 *2 Watts (RMS Typical) Performance Idle average Active Idle average Low Power Idle average Read average Write average Seek average Standby Sleep Startup (maximum peak) Average from power on to ready DJSA-232 2.0 1.3 0.9 2.5 2.7 2.6 0.25 0.1 5.0 3.8 DJSA-230 1.85 0.95 0.65 2.1 2.2 2.3 0.25 0.1 4.7 3.3 DJSA220/210/205 1.85 0.85 0.65 2.0 2.1 2.3 0.25 0.1 4.7 3.3 Notes *3 *4 *5 *6 Notes: *1. The maximum fixed disk ripple is measured at the 5 volt input of the HDD. *2. The disk drive shall not incur damage for an over voltage condition of +25% (maximum duration of 20 ms) on the 5 volt nominal supply. *3. The idle current is specified at an inner track. *4. The read/write current is specified based on three operations of 63 sector read/write per 100 ms. *5. The seek average current is specified based on three operations per 100 ms. *6. The worst case operating current includes motor surge. Figure 18. DC Power requirements Travelstar 32GH/30GT/20GN hard disk drive specifications 25

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6.2 DC power requirements
Connection to the product should be made in isolated secondary circuits (SELV). The voltage specifica-
tions are applied at the power connector of the drive.
Population Mean
(nominal condition)
Supply Current (+5.00 V dc case)
7–100 ms
Supply rise time
*2
±5%
Tolerance
*1
100 mV p-p max.
Power Supply Ripple (0–20 MHz)
+5 Volt dc
Nominal Supply
Notes
Requirements
Item
3.3
3.3
3.8
Average from power on to ready
*6
4.7
4.7
5.0
Startup (maximum peak)
0.1
0.1
0.1
Sleep
0.25
0.25
0.25
Standby
*5
2.3
2.3
2.6
Seek average
2.1
2.2
2.7
Write average
*4
2.0
2.1
2.5
Read average
0.65
0.65
0.9
Low Power Idle average
0.85
0.95
1.3
Active Idle average
*3
1.85
1.85
2.0
Performance Idle average
Notes
DJSA-
220/210/205
DJSA-230
DJSA-232
Watts (RMS Typical)
Notes:
*1.
The maximum fixed disk ripple is measured at the 5 volt input of the HDD.
*2.
The disk drive shall not incur damage for an over voltage condition of +25% (maximum duration of
20 ms) on the 5 volt nominal supply.
*3.
The idle current is specified at an inner track.
*4.
The read/write current is specified based on three operations of 63 sector read/write per 100 ms.
*5.
The seek average current is specified based on three operations per 100 ms.
*6.
The worst case operating current includes motor surge.
Figure 18. DC Power requirements
Travelstar 32GH/30GT/20GN hard disk drive specifications
25