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RT8231B Datasheet Complete Ddr Memory Power Supply Controller

Manufacturer: Richtek

Overview: ® RT8231A/B plete DDR Memory Power Supply Controller General.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The RT8231A/B provides a plete power supply for DDR2/DDR3/DDR3L/LPDDR3/DDR4/LPDDR4 memory systems.

It integrates a synchronous PWM Buck controller with a 1.5A sink/source tracking linear regulator and buffered low noise reference.

The PWM controller provides the low quiescent current, high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high-voltage batteries to generate low-voltage chipset RAM supplies in notebook puters.

Key Features

  • PWM Controller  Adjustable Current Limit with Low-Side RDS(ON) Sensing  Low Quiescent Supply Current  Quick Load-Step Response within 100ns  1% VVDDQ Accuracy Over Line and Load  Adjustable 0.675V to 3.3V Output Range for 1.8V (DDR2), 1.5V (DDR3), 1.35V (DDR3L), 1.2V (LPDDR3), 1.2V (DDR4) and 1.1V (LPDDR4)  4.5V to 26V Battery Input Range  Resistor Adjustable Frequency  Over-/Under-Voltage Protection  Internal Voltage Ramp Soft-Start  Drives Large Synchronous Rectifier MOSFETs .

More Datasheets from Richtek

Part Number Description
RT8231A Complete DDR Memory Power Supply Controller
RT8230A Dual-Channel Synchronous DC/DC Step-Down Controller
RT8230B Dual-Channel Synchronous DC/DC Step-Down Controller
RT8230C Dual-Channel Synchronous DC/DC Step-Down Controller
RT8230D Dual-Channel Synchronous DC/DC Step-Down Controller
RT8230E Dual-Channel Synchronous DC/DC Step-Down Controller
RT8234A Single Synchronous Buck PWM Controller
RT8237A High Efficiency Single Synchronous Buck PWM Controller
RT8237B High Efficiency Single Synchronous Buck PWM Controller
RT8237C High Efficiency Single Synchronous Buck PWM Controller

RT8231B Distributor