XRP6657
1.5A 1.3MHz Synchronous Step Down Converter
PIN DESCRIPTION
Name
Pin Number
Description
Feedback Pin.
1
2
VFB
Receives the feedback voltage from an external resistive divider across the output.
Power Ground Pin.
VSS_PWR
Switching node.
3
Must be connected to inductor. This pin connects to the drains of the internal main
and synchronous power MOSFET switches.
Power Input Pin.
Must be closely decoupled to ground pin with a 4.7µF or greater capacitor.
Analog Input Pin.
Must be closely decoupled to ground pin with a 4.7µF or greater capacitor.
Enable Pin.
SW
4
5
VIN_PWR
VIN_CLN
>1.2V: Enables the XRP6657
<0.4V:Disables the XRP6657
6
EN
Do not leave this pin floating and enable the device once Vin is in the operating range.
Exposed Pad
Analog Ground Pin.
VSS_CLN
ORDERING INFORMATION
Temperature
Part Number
Packing
Quantity
Marking
Package
Note 1
Note 2
Range
6657
IHB
WWX
Adjustable
output voltage
RoHS compliant
Halogen Free
5K/Tape and Reel
XRP6657IHBTR-F
XRP6657EVB
Thin DFN-6L
-40°C≤TA≤+85°C
XRP6657 Evaluation Board
“WW” = Work Week – “X” = Lot Number
© 2009 Exar Corporation
4/11
Rev. 1.0.0
EXAR [ EXAR CORPORATION ]
