Mfr Part #:

RT9643

Mfr Name: N-A

The Richtek RT9643 is a combo regulator designed for desktop/motherboard power management. It integrates multiple regulators for various system power needs.

✓ Total Stock: 105 pcs

$ Price Range: $2.16

RT9643 Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
ACK ELEKTRONIK ✓ Non-Authorised Inventory information	105 pcs On Request	105 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

RT9643 Specifications Quick View

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Category	New Products
Manufacturer Name	N-A

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RT9643 Description

Short technical summary and product information.

The Richtek RT9643 is a versatile combo regulator compliant with the ACPI specification, making it suitable for desktop and motherboard power management applications.

This device features a switch regulator for DDR memory VDDQ power. It also includes three linear regulators: a 1.5A peak sourcing/sinking capability regulator for DDR VTT, a 1.2V ultra-low-dropout linear controller for chipset miscellaneous power, and a 3.3VSB power regulator with 1.25A peak current capability.

Additionally, the RT9643 incorporates two dual power control functions for 5VDL and 3.3VDL, enabling control for S3 and S5 system power states. In total, the RT9643 provides five distinct functions to manage system power efficiently.

Designed for system applications, this regulator offers integrated solutions for complex power requirements in modern computing platforms.

RT9643 Quick Information

Product Type: Combo Regulator

Canonical Name: RT9643 Combo Regulator

Subcategory: Special Purpose Transistor

RT9643 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

RT9643 Estimated Pricing

Qty	Low	High
1+	$2.16	$2.16

Estimated market price range - modelled values for guidance only, not live distributor offers.

RT9643 Features

ACPI specification compliant combo regulator.
Includes DDR VDDQ switch regulator.
Features 1.5A peak DDR VTT linear regulator.
Provides 1.25A peak 3.3VSB power regulator.
Supports S3 and S5 system power control.

RT9643 Applications

Desktop motherboard power management.
System power state control.
DDR memory VDDQ power.
Chipset power regulation.
3.3VSB power supply.

RT9643 FAQs

5 frequently asked questions generated from this part’s specifications.

What is the peak current capability for the 3.3VSB power regulator?

The 3.3VSB power regulator has a peak current capability of 1.25A.

What is the peak sourcing/sinking capability for the DDR VTT regulator?

The DDR VTT regulator has a peak sourcing/sinking capability of 1.5A.

Is the RT9643 compliant with the ACPI specification?

Yes, the RT9643 is compliant with the ACPI specification for desktop/motherboard power management.

What type of regulator is used for DDR memory VDDQ power?

A switch regulator is used for DDR memory VDDQ power.

How many linear regulators are included in the RT9643?

The RT9643 includes three linear regulators.