XRP6658 Datasheet, PDF (4/11 Pages) Exar Corporation – 1A 1.5MHz PFM/PWM Synchronous Step-Down Converter

XRP6658
1A 1.5MHz PFM/PWM Synchronous Step-Down Converter
PIN DESCRIPTION
Name
VIN
GND
EN
VFB
SW
Pin Number
1
2
3
4
5
Description
Power Input Pin.
Must be closely decoupled to GND pin with a 4.7μF or greater ceramic capacitor.
Ground Signal
Enable Pin.
Minimum 1.2V to enable the device. Maximum 0.4V to shutdown the device.
Feedback Pin.
Receives the feedback voltage from an external resistive divider across the output.
Switch Pin.
Must be connected to Inductor. This pin connects to the drains of the internal main and
synchronous power MOSFET switches.
ORDERING INFORMATION
Part Number
Temperature
Range
Marking
XRP6658ISTR-F
XRP6658EVB
-40°C≤T_A≤+85°C
HCWW
XRP6658 Evaluation Board
“WW” = Work Week
Package
5-Pin SOT23
Packing
Quantity
3K/Tape & Reel
Note 1
RoHS Compliant
Halogen Free
Note 2
Note that the XRP6658 series is packaged in Tape and Reel with a reverse part orientation as per
the following diagram
© 2011 Exar Corporation
4/11
Rev. 1.5.0