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RT8230E - Dual-Channel Synchronous DC/DC Step-Down Controller

This page provides the datasheet information for the RT8230E, a member of the RT8230A Dual-Channel Synchronous DC/DC Step-Down Controller family.

Datasheet Summary

Description

The RT8230A/B/C/D/E is a dual-channel step-down, controller generating supply voltages for battery-powered systems.

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

Features

  • Maximum Duty Up to 96%.
  • CCRCOT Control with 100ns Load Step Response.
  • Wide Input Voltage Range : 5V to 25V.
  • Dual Adjustable Output :  CH1 : 2V to 5.5V  CH2 : 2V to 4V.
  • Fixed 3.3V and 5V LDO Output : 100mA.
  • 1% Accuracy on 3.3V LDO Output.
  • Frequency Adjustable Via TON Setting.
  • 4700ppm/ °C RDS(ON) Current Sensing.
  • Adjustable Current Limit Combined with Enable Control.
  • Internal Soft-Start and Soft-Discharge.
  • Thermal Shutdown.
  • RoHS Compli.

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Datasheet preview – RT8230E

Datasheet Details

Part number RT8230E
Manufacturer Richtek
File Size 310.71 KB
Description Dual-Channel Synchronous DC/DC Step-Down Controller
Datasheet download datasheet RT8230E Datasheet
Additional preview pages of the RT8230E datasheet.

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Full PDF Text Transcription

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® RT8230A/B/C/D/E Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs General Description The RT8230A/B/C/D/E is a dual-channel step-down, controller generating supply voltages for battery-powered systems. It includes two Pulse-Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and two fixed 5V/ 3.3V linear regulators. Each linear regulator provides up to 100mA output current. The 5V linear regulator supplies power to the PWM drivers. The RT8230A/B/C/D/E includes on-board power-up sequencing, a power-good output, internal soft-start, and soft-discharge output that prevents negative voltage during shutdown. A constant current ripple PWM control scheme operates without sense resistors and provides 100ns response to load transient.
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