SC488 Datasheet Complete DDR1/2/3 Memory Power Supply

Manufacturer: SEMTECH

Datasheet Details

Part number	SC488
Manufacturer	SEMTECH
File Size	855.93 KB
Description	Complete DDR1/2/3 Memory Power Supply
Download	SC488 Download (PDF)

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.

POWER MANAGEMENT.

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.

Part Number	Description
SC480	Complete DDR1/2/3 Memory Power Supply
SC4806	Multiple Function Double Ended PWM Controller
SC4808A	High Performance Dual Ended PWM Controller
SC4808B	High Performance Dual Ended PWM Controller
SC4808B-1	High Performance Dual Ended PWM Controller
SC4808B-2	High Performance Dual Ended PWM Controller
SC4808C	High Performance Dual Ended PWM Controller
SC4809A	High Performance Current Mode PWM Controller
SC4809B	High Performance Current Mode PWM Controller
SC4809C	High Performance Current Mode PWM Controller