Filter
Top Products
28 Chapter 1
Power Management
AC Adapter
Item Specification
Vendor & model name Delta 75W ADP-75FB A(WPFC) 3P
Lite-on 75W PA 1750-02CA(WPFC) 3P
Input Requirements
Maximum input current (A,
@90Vac, full load)
<1.5A @ 90Vac
<1.125A @ 180Vac
Nominal frequency (Hz) 47 - 63
Frequency variation range (Hz) 47 - 63
Nominal voltages (Vrms) 100 - 240
Inrush current The maximum inrush current will be less than 75A and 188A when the adapter is
connected to 100Vac(60Hz) and 240Vac(50Hz) respectively.
Efficiency It should provide an efficiency of 83% minimum, when measured at maximum
load under 115V(60Hz)
Output Ratings
DC output voltage +18.8V~20.0V including the effects of line voltage variation, load current, ripple
and noise
Noise + Ripple 400mvp-p(20MHz bandwidth) for resistor load
Output current 0~3.95A
Input rated voltage 100/240V
Input currentt 1.5A @90Vac for Delta / 1.125A @90Vac for Lite-on
Dynamic Output Characteristics
Turn-on delay time 3 sec.
Hold up time 5 ms min. (115Vac, input full load)
Over Voltage Protection (OVP) 29 V
Short circuit protection Output can be shorted without damage
Electrostatic discharge (ESD) +/- 15kV (at air discharge)
+/- 8kV (at contact discharge)
Dielectric Withstand Voltage
Primary to secondary 3000Vac (4242Vdc) 10mA for 1 second
Leakage current 100uA max (240Vac, 60Hz)
Regulatory Requirements Internal filter meets:
1. FCC class B requirements
2. VDE 243/1991 class B requirements
3. CISPR 22 class B requirements
4. VCCI class II requirements
Power Saving Mode Phenomenon
Standby Mode
Waiting time specified by the System Standby value
or the operating system elapses without any system
activity.
Or
When the computer is about to enter Hibernation
mode (e.g. during a battery-low condition), but the
Hibernation file is invalid or not present.
The Sleep indicator lights up
SG_TM800.book Page 28 Thursday, February 27, 2003 10:21 PM