Datasheet4U Logo Datasheet4U.com

RT8231A - Complete DDR Memory Power Supply Controller

Datasheet Summary

Description

The RT8231A/B provides a complete 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.

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 .

📥 Download Datasheet

Datasheet preview – RT8231A

Datasheet Details

Part number RT8231A
Manufacturer Richtek
File Size 300.13 KB
Description Complete DDR Memory Power Supply Controller
Datasheet download datasheet RT8231A Datasheet
Additional preview pages of the RT8231A datasheet.

📁 Similar Datasheet

  • RT82 - AUTOMOTIVE BRIDGE RECTIFIERS (LRC)
  • RT8004 - Synchronous Step-Down Regulator (Richtek Technology)
  • RT8015 - Synchronous Step-Down Regulator (Richtek Technology)
  • RT8015B - Synchronous Step-Down Converter (Richtek Technology)
  • RT805 - AUTOMOTIVE BRIDGE RECTIFIERS (LRC)
  • RT81 - AUTOMOTIVE BRIDGE RECTIFIERS (LRC)
  • RT810 - AUTOMOTIVE BRIDGE RECTIFIERS (LRC)
  • RT8100A - Synchronous buck PWM DC/DC (Richtek Technology Corporation)
  • RT8101 - 12V Synchronous Buck PWM DC-DC (Richtek Technology Corporation)
  • RT8101A - 12V Synchronous Buck PWM DC-DC (Richtek Technology Corporation)
Other Datasheets by RICHTEK
  • RT8231B - 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

Full PDF Text Transcription

Click to expand full text
® RT8231A/B Complete DDR Memory Power Supply Controller General Description The RT8231A/B provides a complete 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 computers. The constant on-time PWM control scheme handles wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency.
Published: |