Power supply unit, Power supply unit -11, Confidential – Epson SR-600 User Manual

Page 93

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Rev.A

Hardware Specifications 5-11

Developer's Guide SR-600

Confidential

Power Supply Unit

5-7 The power generated on the motherboard

The power that is provided from the power supply unit on the motherboard generates the
various power as shown above in the table 5-8. See “Power Supply Unit” on page 5-25 for more
details.

VCORE

This is a core power supply unit for CPU, and is generated by DC/DC converter from +5V.
According to the current Celeron ( up to 500MHz), VCORE is 2.00V. The jumper setting is not
necessary, since it is automatically set when attaching the CPU.

It starts its operation after PS - OK signal from the power supply unit is confirmed.

Output capacity range:

1.80V to 2.05V 0.05V step

Ouput voltage error:

+/-2%

Electric current output:

Approximately 14A (maximum)

ControlIC:

Linear Technology LTC1753CG 20pin SSOP

VCC2.5

2.5V power supply for the CMOS signal of the CPU. It is generated by the series regulator from
+5V.

Electric current output:

500mA (maximum)

Regulator:

Linear Technology LT1086CM

DC/DC

Converter

+5V

VCORE

+5VSB

Series

Regulator

+3.3VSB

+3.3V

Series

Regulator

VTT

Series

Regulator

VCC2.5

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