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RT8809B - Multi-Phase PWM Controller

Download the RT8809B datasheet PDF. This datasheet also covers the RT8809A variant, as both devices belong to the same multi-phase pwm controller family and are provided as variant models within a single manufacturer datasheet.

Description

The RT8809A/B is a dual-phase synchronous buck PWM controller with integrated drivers which are optimized for high performance graphic microprocessor and computer applications.

Features

  • a one-bit VID control operation in which the feedback voltage is regulated and tracks external input reference voltage. Other features include, adjustable operating frequency, external compensation, and enable/shutdown functions.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (RT8809A-RichtekTechnology.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number RT8809B
Manufacturer Richtek Technology
File Size 287.32 KB
Description Multi-Phase PWM Controller
Datasheet download datasheet RT8809B Datasheet

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Other Datasheets by Richtek Technology

Part Number Description
RT8809A Multi-Phase PWM Controller
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Full PDF Text Transcription

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® RT8809A/B Multi-Phase PWM Controller for GPU Core Power Supply General Description The RT8809A/B is a dual-phase synchronous buck PWM controller with integrated drivers which are optimized for high performance graphic microprocessor and computer applications. The IC integrates a G-NAVPTM PWM controller, two 12V MOSFET drivers with internal bootstrap diodes, as well as output current monitoring and protection functions into the WQFN-24L 4x4 package. The RT8809A/B adopts DCR and RDS(ON) current sensing. Load line voltage positioning (droop) and over current protection are accomplished through continuous inductor DCR current sensing, while RDS(ON) current sensing is used for accurate channel current balance.
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