XRP7675EVB Exar, XRP7675EVB Datasheet - Page 10

• Manufacturer Part Number: XRP7675EVB
• Description: Power Management IC Development Tools 3A 18V PFM/PWM EVAL Board
• Manufacturer: Exar
• Type: DC/DC Converters, Regulators & Controllersr

Specifications of XRP7675EVB

• Product: Evaluation Boards
• Tool Is For Evaluation Of: XRP7675
• Input Voltage: 4.5 V to 18 V
• Output Voltage: 0.925 V to 16 V
• Description/function: Evaluation board for the XRP7675
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Output Current: 3
• For Use With: XRP7675

where R
The uncompensated regulator has a constant
gain up to its pole frequency, beyond which
the gain decreases at -20dB/decade. The zero
arising from the output capacitor’s ESR is
inconsequential if ceramic C
simplifies the compensation. The RC and CC,
which are placed between the output of
XRP7675’s
constitute a zero. The frequency of this
compensating zero is given by:
TYPICAL APPLICATIONS
© 2013 Exar Corporation
load
is the output load resistance.
Error
Amplifier
Fig. 18: XRP7675 Typical Application Diagram - 12V to 3.3V Conversion
3
3
OUT
A
A
1
1
and
is used. This
8
8
V
V
S
S
ground,
y
y
n
n
c
c
h
h
r
r
10/12
o
o
n
n
o
o
u
u
For the typical application circuit, RC=13kΩ
and
compensation. The XRP7675 can also be used
as a pin to pin upgrade replacement for
XRP7665 based designs; in this instance, the
recommended
RC=6.8k and CC=3.9nF, can be used with
satisfactory results with the XRP7675. Please
contact EXAR if you need assistance with the
compensation of your particular circuit.
s
s
P
P
F
F
M
CC=4.7nF
M
/
/
P
P
W
W
M
M
RC
S
S
t
t
provide
e
e
network
p
p
-
-
D
D
o
o
w
w
a
n
n
for
X
X
R
R
R
R
satisfactory
e
e
P
P
XRP7665,
g
g
Rev. 1.0.0
u
u
7
7
l
l
6
6
a
a
7
t
7
t
o
o
5
5
r
r