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RT8871B - 4/3/2-Phase PWM Controller

Download the RT8871B datasheet PDF. This datasheet also covers the RT8871A variant, as both devices belong to the same 4/3/2-phase pwm controller family and are provided as variant models within a single manufacturer datasheet.

General Description

The RT8871A/B is a 4/3/2-phase synchronous buck controller with two integrated MOSFET drivers for CPU power application and a single-phase buck with integrated MOSFET driver for North-Bridge (NB) chipset.

Key Features

  • include adjustable operating frequency, power good indication, external error-amp compensation, over voltage protection, over current protection and enable/shutdown for various.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (RT8871A-Richtek.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number RT8871B
Manufacturer Richtek
File Size 430.28 KB
Description 4/3/2-Phase PWM Controller
Datasheet download datasheet RT8871B Datasheet

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Other Datasheets by Richtek

Part Number Description
RT8871A 4/3/2-Phase PWM Controller
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RT8876A Dual Channel PWM Controller
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RT8877C Dual-Output PWM Controller

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.

View original datasheet text
® RT8871A/B 4/3/2-Phase PWM Controller for AMD AM2/AM2+/AM3/FM1 CPUs General Description The RT8871A/B is a 4/3/2-phase synchronous buck controller with two integrated MOSFET drivers for CPU power application and a single-phase buck with integrated MOSFET driver for North-Bridge (NB) chipset. The RT8871A/B uses differential inductor DCR current sense to achieve phase current balance and active voltage positioning. Other features include adjustable operating frequency, power good indication, external error-amp compensation, over voltage protection, over current protection and enable/shutdown for various applications. The RT8871A/B comes in a small footprint with WQFN48L 7x7 and WQFN-48L 6x6 packages.