IBM DBCA-204860 Hard Drive Specifications - Page 27

5.2 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- 20Mhz) Tolerance Supply Current Low-power Idle Average Active Idle Average Performance Idle Average Read average Write average Seek average Standby Sleep Start up(maximum peak) (average from power on to ready) Supply Rise Time Figure 16. Power Requirement Requirements + 5 Volt 100 mv p-p max +/-5% Pop.Mean (Nominal Condition) 0.13 A RMS typical (0.65 W) 0.17 A RMS typical (0.85 W) 0.37 A RMS typical (1.85 W) 0.40 A RMS typical (2.0 W) 0.42 A RMS typical (2.1 W) 0.46 A RMS typical (2.3 W) 0.05 A RMS typical (0.25 W) 0.02 A RMS typical (0.1 W) 0.94 A RMS typical (4.7 W) 0.66 A RMS typical (3.3 W) 7 - 100 ms Notes *1 *2 *3 *4 *5 *6 Notes: (*1) The maximum fixed disk ripple is measured at 5V input of the drive. (*2) The disk drive shall not incur damage for an over voltage condition of + 2 5 % (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 msec. (*5) The seek average current is specified based on three operations per 100 msec. (*6) The typical current wave form at start up is shown in Figure 17 on page 20. Specification 19