RT3612EB datasheet(3/47 Pages) RICHTEK

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RT3612EB

DS3612EB-02 December 2019

www.richtek.com

is a registered trademark of Richtek Technology Corporation.

Pin No.

Pin Name

Pin Function

VREF06

Voltage source output. During controller internal setting period, it outputs 3.2V.

In normal operation, it outputs 0.6V to offset IMON signal. While controller

shuts down or in PS4, voltage source shuts down. An exact 0.47

F capacitor

and 3.9

 resistor from this pin to GND are required for stability.

RGND

Return ground. This pin is the negative input of output voltage differential

remote sense.

VSEN

Voltage sense input. This pin is connected to the terminal of controller output

voltage.

COMP

Error amplifier output pin.

Negative input of the error amplifier. This pin is for output voltage feedback to

controller.

20, 17

ISEN[1:2]P

Positive current sense inputs of channel 1 and 2.

19, 18

ISEN[1:2]N

Negative current sense inputs of channel 1 and 2.

TSEN

Thermal sense input and function settings for advanced ramp magnitude in

PS1, advanced ramp magnitude in PS0, zero loadline enable and DVID voltage

compensation.

VIN

Input voltage pin. Connect an RC filter whose time constant need less than

switch period for sensing input voltage.

VRON

Controller enable pin. A logic high signal enables the controller.

VR_READY

VR ready indicator.

26, 32

UGATE[1:2]

High-side driver output. Connect the pin to the gate of high-side MOSFET.

27, 31

PHASE[1:2]

Switch node of high-side driver. Connect the pin to high-side MOSFET source

together with the low-side MOSFET drain and inductor.

28, 30

LGATE[1:2]

Low-side driver output. This pin drives the gate of low-side MOSFET.

PVCC

Driver power supply input. Connect this pin to 5V and place a minimum 2.2

F

ceramic capacitor.

(Exposed Pad)

GND

Ground. The exposed pad must be soldered to a large PCB and connected to

GND for maximum power dissipation.

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