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XRP6670EVB Datasheet(PDF) 4 Page - Exar Corporation

Part # XRP6670EVB
Description  3A 300kHz-2.5MHz Synchronous Step Down Regulator
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRP6670EVB Datasheet(HTML) 4 Page - Exar Corporation

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X
XR
RP
P6
66
67
70
0
3
3A
A 3
30
00
0k
kH
Hz
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-2
2..5
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MH
Hz
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ch
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© 2013 Exar Corporation
4/13
Rev. 1.0.1
PIN DESCRIPTION
Name
Pin Number
Description
SHDN/RT
1
Shutdown and Oscillator resistor input.
Connect a resistor to GND from this pin to set the switching frequency. Forcing this pin
to VDD shuts down the device.
GND
2
Signal ground.
All small-signal ground, such as the compensation components and exposed pad should
be connected to this, which in turn connects to PGND at one point.
SW
3, 4
Power switch output pin.
This pin is connected to the inductor.
PGND
5
Power Ground Signal.
Connect this signal as close as possible to the input and output capacitors CIN and COUT.
PVDD
6
Power Input Supply Pin.
Decouple this pin to PGND (pin 5) with a capacitor.
VDD
7
Signal Input Supply Pin.
Decouple this pin to GND (pin 2) with a capacitor. Typically, VDD and PVDD are
connected together.
PGOOD
8
Power Good Flag.
This is an open drain output and is pulled to ground if the output voltage is out of
regulation.
FB
9
Feedback pin.
An external resistor divider connected to FB programs the output voltage.
COMP
10
Compensation pin.
This is the output of transconductance error amplifier and the input to the current
comparator. It is used to compensate the control loop. Connect an RC network form this
pin to GND.
Exp. Pad
Exp. Pad
Connect to GND signal (pin 2).
ORDERING INFORMATION
Part Number
Junction
Temperature
Range
Marking
Package
Packing
Quantity
Note 1
Note 2
XRP6670EHTR-F
-40°C≤TJ≤+125°C
6670
YYWW
XXX
DFN10
3K/Tape & Reel
Halogen Free
XRP6670EVB
XRP6670 Evaluation Board
“YY” = Year – “WW” = Work Week – “X” = Lot Number; when applicable.


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