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RT9226B - Synchronous PWM Step-Down DC/DC Converter Controller

General Description

The RT9226B is a low cost, high-efficiency voltage-mode PWM controller for motherboard power supply application.

Synchronous N-Channel MOSFET driver, short-circuit protection, and soft start function are integrated in a single chip.

Key Features

  • include output voltage monitoring for power good indication and over voltage protection. Ordering Information RT9226B Package Type S : SOP-14 Operating Temperature Range C : Commercial Standard P : Pb Free with Commercial Standard Note : RichTek Pb-free products are :.
  • RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.
  • Suitable for use in SnPb or Pb-free soldering processes.
  • 100%matte tin (Sn) plating. Features z Synchronous N-Channel M.

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Datasheet Details

Part number RT9226B
Manufacturer Richtek
File Size 83.75 KB
Description Synchronous PWM Step-Down DC/DC Converter Controller
Datasheet download datasheet RT9226B Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Preliminary RT9226B Synchronous PWM Step-Down DC/DC Converter Controller General Description The RT9226B is a low cost, high-efficiency voltage-mode PWM controller for motherboard power supply application. Synchronous N-Channel MOSFET driver, short-circuit protection, and soft start function are integrated in a single chip. A simple high power buck regulator with shutdown function can be implemented with minimum external components. The RT9226B provides current-limit protection by monitoring the voltage drop across N-Channel MOSFET in over current condition, therefore, eliminates the current sensing resistor and minimizes the efficiency loss. The soft start function reduces the stress on power supply and components in power on duration.