Datasheet4U Logo Datasheet4U.com

RT8243B - Main Power Supply Controller

This page provides the datasheet information for the RT8243B, a member of the RT8243A Main Power Supply Controller family.

Datasheet Summary

Description

The RT8243A/B/C is a dual step down, Switch Mode Power Supply (SMPS) controller which generates logic supply voltages for battery powered systems.

It includes two Pulse Width Modulation (PWM) controllers adjustable from 2V to 5.5V and also two fixed 5V/3.3V linear regulators.

Features

  • include on board power up sequencing, a power good output, internal softstart, and a soft discharge output that prevents negative voltage during shutdown. A constant on-time PWM control scheme operates without sense resistors and assures fast load transient response while maintaining nearly constant switching frequency. To eliminate noise in audio.

📥 Download Datasheet

Datasheet preview – RT8243B

Datasheet Details

Part number RT8243B
Manufacturer Richtek
File Size 306.74 KB
Description Main Power Supply Controller
Datasheet download datasheet RT8243B Datasheet
Additional preview pages of the RT8243B 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
  • RT8243A - Main Power Supply Controller
  • RT8243C - Main Power Supply Controller
  • RT8240A - High Efficiency Single Synchronous Buck PWM Controller
  • RT8240B - High Efficiency Single Synchronous Buck PWM Controller
  • RT8240C - High Efficiency Single Synchronous Buck PWM Controller
  • RT8241 - High Efficiency Single Synchronous Buck PWM Controller
  • RT8241E - High Efficiency Single Synchronous Buck PWM Controller
  • RT8248A - Complete DDR Memory Power Supply Controller

Full PDF Text Transcription

Click to expand full text
® RT8243A/B/C High Efficiency, Main Power Supply Controller for Notebook Computers General Description The RT8243A/B/C is a dual step down, Switch Mode Power Supply (SMPS) controller which generates logic supply voltages for battery powered systems. It includes two Pulse Width Modulation (PWM) controllers adjustable from 2V to 5.5V and also two fixed 5V/3.3V linear regulators. One of the controllers (LDO5) provides automatic switch over to the BYP1 input connected to the main SMPS1 output for maximized efficiency. An optional external charge pump can be monitored through SECFB (RT8243B/C). Other features include on board power up sequencing, a power good output, internal softstart, and a soft discharge output that prevents negative voltage during shutdown.
Published: |