RT3662EB datasheet(2/28 Pages) RICHTEK

2 / 28 page

RT3662EB

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

DS3662EB-04

August

2019

Ordering Information

Package Type

QW : WQFN-32L 4x4 (W-Type)

RT3662EB

Lead Plating System

G : Green (Halogen Free and Pb Free)

Note :

Richtek products are :



RoHS compliant and compatible with the current

requirements of IPC/JEDEC J-STD-020.



Suitable for use in SnPb or Pb-free soldering processes.

Pin Configuration

(TOP VIEW)

VIN

COMP

RGND

UGATE1

VSEN

BOOT1

ISEN2N

ISEN2P

VDDIO

PGOOD

ISEN1P

SVT

ISEN1N

SVD

10 11 12 13

31 30 29 28

GND

WQFN-32L 4x4

Functional Pin Description

Pin No.

Pin Name

Pin Function

VIN

VIN input. Connect a low pass filter to this pin.

RGND

Return ground of VDDC controller. This pin is the common negative input of

output voltage differential remote sense of VDDC controller.

COMP

Error amplifier output pin of the VDDC controller.

Output voltage feedback input of VDDC controller. This pin is the negative

input of the error amplifier for the VDDC controller.

ISEN2P

Positive current sense input of channel 2 for VDDC controller.

ISEN2N

Negative current sense input of channel 2 for VDDC controller.

ISEN1P

Positive current sense input of Channel 1 for VDDC controller.

ISEN1N

Negative current sense input of channel 1 for VDDC controller.

VRHOT_L

Thermal indicator. This pin is an open drain output. (Active low)

TSEN

This pin provides two functions: platform setting, platform can use this pin to

set frequency, initial offset and per-phase OCP threshold of VDDC

Controller. The other function is thermal sense input for VRHOT indicator, so

this pin must to be connected to the NTC network for thermal sense.

SET1

Platform setting pin. Platform can use this pin to set AI gain, QRTH of VDDC

Controller.

IMON

Current monitor output for the VDDC controller. This pin outputs a voltage

proportional to the output current.

VREF_PINSET

This pin provides two functions : the 3.2V power supply for pin setting

function divided resistors. The other function is fixed 0.8V output reference

voltage, and the voltage is only used to offset the output voltage of IMON

pin. Connect a RC circuit from this pin to GND. The recommended resistor

is from 3.9

 to 10, and the capacitor is 0.47F.

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