XRP6668 Datasheet, PDF (4/11 Pages) Exar Corporation – Step Down Converter

XRP6668
1A/1A Dual Channel 1.5MHz Sync. Step Down Converter
PIN DESCRIPTION
Name
VIN1
SW1
VIN2
SW2
VFB2
EN2
VFB1
EN1
GND
Pin Number
Description
1
Channel 1 Power Input Pin.
Must be closely decoupled to GND pin with a 4.7μF or greater ceramic capacitor.
Channel 1 Switch Pin.
2
Must be connected to Inductor. This pin connects to the drains of the internal main and
synchronous power MOSFET switches.
3
Channel 2 Power Input Pin.
Must be closely decoupled to GND pin with a 4.7μF or greater ceramic capacitor.
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.
5
Channel 2 Feedback Pin.
Receives the feedback voltage from an external resistive divider across the output.
6
Channel 2 Enable Pin.
Minimum 1.2V to enable the device. Maximum 0.4V to shutdown the device.
7
Channel 1 Feedback Pin.
Receives the feedback voltage from an external resistive divider across the output.
8
Channel 1 Enable Pin.
Minimum 1.2V to enable the device. Maximum 0.4V to shutdown the device.
Exposed Pad Connect to GND.
ORDERING INFORMATION
Part Number
XRP6668IDBTR-F
XRP6668EVB
Temperature
Range
Marking
-40°C≤T_A≤+85°C
XRP6668I
YYWW
X
XRP6668 Evaluation Board
Package
8-Pin HSOIC
Packing
Quantity
Note 1
3K/Tape & Reel ^{RoHS Compliant}
Halogen Free
“YY” = Year – “WW” = Work Week – “X” = Lot Number
Note 2
© 2011 Exar Corporation
4/11
Rev. 1.2.0