RT9088

2

DS9088-02 March 2015

www.richtek.com

©

Copyright 2015 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

Functional Pin Description

Pin No.

Pin Name

Pin Function

1

REFIN

Reference Input.

2

VIN

Power Input of the Regulator.

3

VOUT

Power Output of the Regulator.

4

PGND

Power Ground of the Regulator.

5

SENSE

Voltage Sense Input for the Regulator. Connect to positive terminal of the

output capacitor or the load.

6

REFOUT

Reference Output. Connect to GND through a 0.1

F ceramic capacitor.

7

EN

Enable Control Input. For DDR VTT application, connect EN to SLP_S3. For

other applications, use EN as the ON/OFF function.

9

PGOOD

Power Good Open-Drain Output. Connect a pull-up resistor between this pin

and VCNTL pin.

10

VCNTL

Control Voltage Input. Connect this pin to the 3.3V or 5V power supply. A

ceramic decoupling capacitor with a value 4.7

F is required.

8,

11 (Exposed Pad)

GND

Analog Ground. Connect to negative terminal of the output capacitor. The

exposed pad must be soldered to a large PCB and connected to GND for

maximum power dissipation.

Ordering Information

Note :

Richtek products are :



RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.



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

Pin Configurations

(TOP VIEW)

WDFN-10L 3x3

REFIN

VIN

SENSE

PGND

VCNTL

PGOOD

GND

REFOUT

EN

VOUT

9

8

7

1

2

3

4

5

10

6

11

RT9088

Package Type

QW : WDFN-10L 3x3 (W-Type)

Lead Plating System

G : Green (Halogen Free and Pb Free)