X

8

1

© 2011 Exar Corporation

4/11

Rev. 1.2.0

PIN DESCRIPTION

Name

Pin Number

Description

VIN1

1

Channel 1 Power Input Pin.

Must be closely decoupled to GND pin with a 4.7μF or greater ceramic capacitor.

SW1

2

Channel 1 Switch Pin.

Must be connected to Inductor. This pin connects to the drains of the internal main and

synchronous power MOSFET switches.

VIN2

3

Channel 2 Power Input Pin.

Must be closely decoupled to GND pin with a 4.7μF or greater ceramic capacitor.

SW2

4

Channel 2 Switch Pin. Must be connected to Inductor. This pin connects to the drains of

the internal main and synchronous power MOSFET switches.

VFB2

5

Channel 2 Feedback Pin.

Receives the feedback voltage from an external resistive divider across the output.

EN2

6

Channel 2 Enable Pin.

Minimum 1.2V to enable the device. Maximum 0.4V to shutdown the device.

VFB1

7

Channel 1 Feedback Pin.

Receives the feedback voltage from an external resistive divider across the output.

EN1

8

Channel 1 Enable Pin.

Minimum 1.2V to enable the device. Maximum 0.4V to shutdown the device.

GND

Exposed Pad

Connect to GND.

ORDERING INFORMATION

Part Number

Temperature

Range

Marking

Package

Packing

Quantity

Note 1

Note 2

XRP6668IDBTR-F

XRP6668I

YYWW

X

8-Pin HSOIC

3K/Tape & Reel RoHS Compliant

Halogen Free

XRP6668EVB

XRP6668 Evaluation Board

“YY” = Year – “WW” = Work Week – “X” = Lot Number