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RT9646

PinoutDescriptionThe RT9646 is a combo regulator which is compliant to ACPI specification for desktop/motherboard power management and system application. The RT9646 part features one switching regulator for DDR memory VDDQ power, two linear regulators including 1.5A peak sourcing/sinking capabili...

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SeekIC No. : 004480007 Detail

RT9646: PinoutDescriptionThe RT9646 is a combo regulator which is compliant to ACPI specification for desktop/motherboard power management and system application. The RT9646 part features one switching regu...

RT9646 Data Sheet

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Part Number:
RT9646
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/12/26

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Description

The RT9646 is a combo regulator which is compliant to ACPI specification for desktop/motherboard power management and system application. The RT9646 part features one switching regulator for DDR memory VDDQ power, two linear regulators including 1.5A peak sourcing/sinking capability regulator for DDR VTT, a 3.3VSB power with 1.25A peak current capability; and 3 dual power control including 5VUSB, 5VDL, and 3.3VDL control for S3, S5M1 and S5 system power. The part totally feature 5 sets power which are compliant to ACPI specification into a single small footprint package VQFN-24L 5x5.
The RT9646 part is generally operated to conform to ACPI specification. In S3 mode, VDDQ and 3V_DUAL remains on but VTT_OUT is shut off. In the transition from S5 to S0, an external SS capacitor is attached for regulators to control its slew rates respectively to avoid inrush current induced. Moreover, the PGOOD signal raises high in S0 stage while all 2 regulators in regulation. In S5 stage (EN = 0), only 3.3VSB LDO remain on, while the other regulators are powered down. The VDDQ PWM regulator is a voltage mode implementation with external compensation to provide high load transient response. The VTT is regulated to follow 1/2 of VDDQ and is capable of sourcing or sinking 1.5A peak currents.


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