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RT8109 - 5V to 12V Single Synchronous Buck PWM Controller

Description

The RT8109 is a single-phase synchronous buck PWM DC-DC controller designed to drive two N-MOSFETs.

It provides a highly accurate, programmable output voltage precisely regulated to low voltage requirement with an internal 0.6V ±1% reference.

Features

  • Single IC Supply Voltage ( 5V to 12V).
  • Drive Two N-MOSFETs.
  • Fixed Operating Frequency at 300kHz.
  • Voltage Mode PWM Control with External Feedback Loop Compensation.
  • Over Current Protection by Sensing MOSFET RDS(ON).
  • Dual Mode Regulation Control Standalone Mode (FB regulating to close to internal reference 0.6V) Tracking Mode (FB following PI input).
  • Power Good Indication.
  • On/Off Control.
  • Full 0 to 90% Duty Cycle.
  • RoHS Compliant and Halgen Free.

📥 Download Datasheet

Datasheet Details

Part number RT8109
Manufacturer Richtek
File Size 256.79 KB
Description 5V to 12V Single Synchronous Buck PWM Controller
Datasheet download datasheet RT8109 Datasheet

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Full PDF Text Transcription

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® RT8109 5V to 12V Single Synchronous Buck PWM Controller with Reference Input General Description The RT8109 is a single-phase synchronous buck PWM DC-DC controller designed to drive two N-MOSFETs. It provides a highly accurate, programmable output voltage precisely regulated to low voltage requirement with an internal 0.6V ±1% reference. The RT8109 uses a single feedback loop voltage mode PWM control for fast transient response. The high driving capability makes it suitable for large output current applications. An oscillator with fixed frequency 300kHz reduces the component size of the external inductor and capacitor for saving PCB board area and cost. The RT8109 supports both tracking and stand-alone loop control modes.
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