XRP7674EVB Exar, XRP7674EVB Datasheet - Page 4

• Manufacturer Part Number: XRP7674EVB
• Description: Power Management IC Development Tools 2A 18V PFM/PWM EVAL Board
• Manufacturer: Exar
• Type: DC/DC Converters, Regulators & Controllersr

Specifications of XRP7674EVB

• Product: Evaluation Boards
• Tool Is For Evaluation Of: XRP7674
• Input Voltage: 4.5 V to 18 V
• Output Voltage: 0.925 V to 16 V
• Description/function: Evaluation board for the XRP7674
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Output Current: 8.33E-02
• For Use With: XRP7674

PIN ASSIGNMENT
PIN DESCRIPTION
ORDERING INFORMATION
“YY” = Year – “WW” = Work Week – “X” = Lot Number; when applicable.
© 2013 Exar Corporation
XRP7674IDTR-F
XRP7674EVB
Part Number
Name
COMP
GND
SW
BS
EN
SS
FB
IN
Pin Number
XRP7674 Evaluation Board
-40°C≤T
Temperature
1
2
3
4
5
6
7
8
Range
A
≤+85°C
2
2
Bootstrap pin.
Connect a 0.01µF or greater bootstrap capacitor between the BS pin and the SW pin.
The voltage across the bootstrap capacitor drives the internal high-side power MOSFET.
Power input pin.
A capacitor should be connected between the IN pin and GND pin to keep the input
voltage constant.
Power switch output pin.
This pin is connected to the inductor and the bootstrap capacitor.
Ground pin.
Feedback pin.
An external resistor divider connected to FB programs the output voltage. If the
feedback pin exceeds 1.1V the over-voltage protection will trigger. If the feedback
voltage drops below 0.3V the oscillator frequency is lowered to achieve short-circuit
protection.
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.
Control input pin.
Drive EN high/low in order to turn on/off the regulator. When the IC is in shutdown
mode all functions are disabled to decrease the supply current below 1µA. This input
can be connected to VIN (pin 2) through a 100kΩ resistor for automatic startup
operations.
Soft-start control input pin.
Connect a capacitor from SS to GND to set the soft-start period. A 0.1µF capacitor sets
the soft start period to 15ms. To disable the soft-start feature, leave SS unconnected.
A
A
1
1
Fig. 3: XRP7674 Pin Assignment (SOIC-8)
8
8
XRP7674I
Marking
V
V
YYWWF
S
S
y
y
X
n
n
c
c
h
h
Package
r
r
SOIC-8
o
o
4/12
n
n
o
o
u
u
s
s
2.5K/Tape & Reel RoHS Compliant
P
P
F
F
Quantity
Description
Packing
M
M
/
/
P
P
W
W
M
M
Halogen Free
S
S
t
t
e
e
Note 1
p
p
-
-
D
D
o
o
w
w
n
n
X
X
R
R
R
R
e
e
Note 2
P
P
g
g
Rev. 1.0.0
u
u
7
7
l
l
6
6
a
a
7
t
7
t
o
o
4
4
r
r