24 Chapter 1 Efficiency It should provide an eff iciency of 83% minimum, when measured at maxim um
load under 115V(60Hz).
Output Ratings (CV mode)
DC output voltage +19.0V~20.0V
Noise + Ripple 300mvp-pmax (20MHz bandwidth)
Load 0 A (min.) 3.16 A (m ax.)
Output Ratings (CC mode)
DC output voltage +12 V ~ +19V
Constant output 2.75 ± 0.2 A
Dynamic Output Characteristics
Turn-on delay time 2 sec. (@115Vac)
Hold up time 4 ms min. (@115 Vac input, full load)
Over Voltage Protection (O VP) 24 V
Short circuit protection Output can be shorted without damage
Electrostatic dischar ge (ESD) 15kV (at air discharg e)
8kV (at contact discharge)
Dielectric Withstand Volt age
Primary to secondary 1500 Vac (or 2121 Vdc), 10 mA for 1 second
Leakage current 0.25 mA max. (@ 254 Vac, 60Hz )
Regulatory Requirements Internal filter meets:
1. FCC class B requirements. (USA)
2. VDE 243/1991 class B requirements. (German)
3. CISPR 22 Class B requirements. (Scandinavia)
4. VCCI class II requirements. (J apan)
Power Management Power Saving Mode Phenomenon
Standby Mode
Waiting time specified by the System
Standby value or the operating system
elapses without any system ac tiv it y.
Or
When the computer is about to enter
Hibernation mode (e.g., during a battery-low
condition), but the Hib ernation file is invali d
or not present.
!The Sleep indicator ligh ts up
Hibernation Mode
When customized functions fo r power
management are set to Hibernation and the
corresponding action i s taken.
!All power shuts off
Display Standby Mode
Keyboard, built-in touchp ad, and an external
PS/2 pointing device are idle for a specified
period.
!The display shuts off
Hard Disk Standby Mode
Hard disk is idle within a s pecified period of
time.
!Hard disk drive is in standby mode .
(spindle turned-off)
AC AdapterItem Specification