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SC488 Datasheet Complete Ddr1/2/3 Memory Power Supply

Manufacturer: SEMTECH

Overview: POWER MANAGEMENT.

General Description

The SC488 is a combination switching regulator and linear source/sink regulator intended for DDR1/2 memory systems.

The purpose of the switching regulator is to generate the supply voltage, VDDQ, for the memory system.

It is a pseudo-fixed frequency constant on-time controller designed for high efficiency, superior DC accuracy, and fast transient response.

Key Features

  • include cycle-by-cycle current limiting, digital soft-start, over-voltage and under-voltage protection and a power good flag. For the VTT regulator, the output voltage tracks REF, which is ½ VDDQ to provide an accurate termination voltage. The VTT output is generated from a 1.2V to VDDQ input by a linear source/sink regulator which is designed for high DC accuracy, fast transient response, and low external component count. All three outputs (VDDQ, VTT and REF) are actively discharged when VDDQ is.

SC488 Distributor & Price

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