Table of Contents
Advertisement
Chapter 2
Power Specifications
Table 2-8 shows the power requirements from the baseboard and the board power output.
Table 2-8. Power Supply Requirements
Parameter
Input Type
In-rush Current
BIT* Current
(Typical)
In-rush Power
Notes: *The BIT (burn in test) current was derived with 64MB SDRAM, floppy, HDD, I/O Interface
board, USB loopbacks, and one Ethernet channel connected using Win2k OS.
Environmental Specifications
Table 2-9 provides the most efficient operating and storage condition ranges required for this board.
Table 2-9. Environmental Requirements
Parameter
Temperature
Operating
Extended
(Optional)
Storage
Humidity
Operating
Non-operating
Thermal/Cooling Requirements
The CPU, Northbridge, Southbridge, and voltage regulators are the sources of heat on the board.
The LittleBoard 700 is designed to operate at its maximum CPU speed of 400MHz, 650MHz, or
933MHz. The Pentium III CPU requires a heatsink and fan. The Celeron CPUs only require a
heatsink.
LittleBoard 700
400MHz Celeron (Q3)
Characteristics
Regulated DC voltages
2.04 Amps
1.9A
10.2W
400MHz Celeron (Q3)
Conditions
+0°to+70°C
(32°to +158°F)
-40°to+85°C
(-40°to +185°F)
–55°to+85°C
(–67°to+185°F)
20% to 80%
relative humidity,
non-condensing
5% to 95%
relative humidity,
non-condensing
Reference Manual
650MHz Celeron (Q2)
Characteristics
Regulated DC voltages
2.80 Amps
2.3A
14W
650MHz Celeron (Q2)
Conditions
+0°to+70°C
(32°to +158°F)
-40°to+85°C
(-40°to+185°F)
–55°to+85°C
(–67°to+185°F)
20% to 80%
relative humidity,
non-condensing
5% to 95%
relative humidity,
non-condensing
Product Overview
933MHz Pentium III (Q1)
Characteristics
Regulated DC voltages
3.36 Amps
2.7A
16.8W
933MHz Pentium III (Q1)
Conditions
+0°to+70°C
(32°to +158°F)
-40°to+85°C
(-40°to+185°F)
–55°to+85°C
(–67°to+185°F)
20% to 80%
relative humidity,
non-condensing
5% to 95%
relative humidity,
non-condensing
19
Advertisement
Table of Contents
