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SC1544 - ACPI Controller for Advanced Motherboards

Datasheet Summary

Description

Semtech’s SC1544, SC243x and SC1112A or SC1114 provide all the voltages necessary for an ACPI system.

The SC1544 offers five independant supplies: a 5V dual supply for USB, a 3.3V dual supply for PCI, a 3.3V or 2.5V dual supply for memory, a 1.5V or 3.3V supply for AGP and a 1.8V supply.

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Datasheet preview – SC1544

Datasheet Details

Part number SC1544
Manufacturer Semtech Corporation
File Size 259.36 KB
Description ACPI Controller for Advanced Motherboards
Datasheet download datasheet SC1544 Datasheet
Additional preview pages of the SC1544 datasheet.

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Full PDF Text Transcription

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POWER MANAGEMENT Description Semtech’s SC1544, SC243x and SC1112A or SC1114 provide all the voltages necessary for an ACPI system. The SC1544 offers five independant supplies: a 5V dual supply for USB, a 3.3V dual supply for PCI, a 3.3V or 2.5V dual supply for memory, a 1.5V or 3.3V supply for AGP and a 1.8V supply. The AGP supply is programmble using the system TYPEDET signal. An on-board internal charge pump eliminates the need for P-channel MOS.ETs and enables function from a single 5V supply (system 5VSB). All dual outputs are over current protected. The SC1544 differs from the SC1547 in three important ways: 1) the device initially starts up in S5, and not G0 like the SC1547; 2) the gate drives for the 1.8V and AGP outputs are always high in normal operation; 3) no OCP on the 1.
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