Lenovo PC 300PL Technical Information Manual 6275, 6285 - Page 38

Component Outputs

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Chapter 4. Power Supply Component Outputs The power supply provides separate voltage sources for the system board and internal storage devices. The following figures show the approximate power that is provided for specific system components. Many components draw less current than the maximum shown. Figure 14. System Board Supply Voltage +3.3 V dc +5.0 V dc +12.0 V dc −12.0 V dc Maximum Current 3000 mA 4000 mA 25.0 mA 25.0 mA Regulation Limits +2% to −2.0% +5.0% to −4.0% +5.0% to −5.0% +10.0% to −9.0% Figure 15. Keyboard Port Supply Voltage +5.0 V dc Maximum Current 275 mA Regulation Limits +5.0% to −4.0% Figure 16. Auxiliary Device Port Supply Voltage +5.0 V dc Maximum Current 300 mA Regulation Limits +5.0% to −4.0% Figure 17. ISA-Bus Adapters (Per Slot) Supply Voltage Maximum Current +5.0 V dc 2000 mA −5.0 V dc 200 mA +12.0 V dc 1500 mA −12.0 V dc 300 mA Regulation Limits +5.0% to −4.0% +5.0% to −5.0% +5.0% to −5.0% +10.0% to −9.0% Figure 18. PCI-Bus Adapters (Per Slot) either/or Supply Voltage Maximum Current +5.0 V dc 2000 mA +3.3 V dc 3030 mA Regulation Limits +5.0% to −4.0% +5.0% to −4.0% Note: For each PCI or ISA connector, the maximum power consumption is rated at 10 watts for +5 V dc and +3.3 V.dc combined. Typical power budget assumptions use 7.5 watts per adapter. If maximum power is used, then the overall system configuration will be limited in performance. Figure 19. USB Port Supply Voltage +5.0 V dc Maximum Current 500 mA Regulation Limits +5.0% to −4.0% 26 Technical Information Manual

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Chapter 4.
Power Supply
Component Outputs
The power supply provides separate voltage sources for the system board and internal storage devices.
The following figures show the approximate power that is provided for specific system components.
Many
components draw less current than the maximum shown.
Note:
For each PCI or ISA connector, the maximum power consumption is rated at 10 watts for +5
V dc
and +3.3
V.dc combined.
Typical power budget assumptions use 7.5 watts per adapter.
If
maximum power is used, then the overall system configuration will be limited in performance.
Figure 14. System Board
Supply Voltage
Maximum Current
Regulation Limits
+
3.3 V dc
3000 mA
+
2% to
-
2.0%
+
5.0 V dc
4000 mA
+
5.0% to
-
4.0%
+
12.0 V dc
25.0 mA
+
5.0% to
-
5.0%
-
12.0 V dc
25.0 mA
+
10.0% to
-
9.0%
Figure 15. Keyboard Port
Supply Voltage
Maximum Current
Regulation Limits
+
5.0 V dc
275 mA
+
5.0% to
-
4.0%
Figure 16. Auxiliary Device Port
Supply Voltage
Maximum Current
Regulation Limits
+
5.0 V dc
300 mA
+
5.0% to
-
4.0%
Figure 17. ISA-Bus Adapters (Per Slot)
Supply Voltage
Maximum Current
Regulation Limits
+
5.0 V dc
2000 mA
+
5.0% to
-
4.0%
-
5.0 V dc
200 mA
+
5.0% to
-
5.0%
+
12.0 V dc
1500 mA
+
5.0% to
-
5.0%
-
12.0 V dc
300 mA
+
10.0% to
-
9.0%
Figure 18. PCI-Bus Adapters (Per Slot) either/or
Supply Voltage
Maximum Current
Regulation Limits
+
5.0 V dc
2000 mA
+
5.0% to
-
4.0%
+
3.3 V dc
3030 mA
+
5.0% to
-
4.0%
Figure 19. USB Port
Supply Voltage
Maximum Current
Regulation Limits
+
5.0 V dc
500 mA
+
5.0% to
-
4.0%
26
Technical Information Manual