XRP7659EVB Exar, XRP7659EVB Datasheet

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XRP7659EVB

Manufacturer Part Number
XRP7659EVB
Description
Power Management IC Development Tools EVAL XRP7659
Manufacturer
Exar
Type
DC/DC Converters, Regulators & Controllersr
Datasheet

Specifications of XRP7659EVB

Rohs
yes
Product
Evaluation Boards
Tool Is For Evaluation Of
XRP7659
Input Voltage
4.5 V to 18 V
Output Voltage
3.3 V
Output Current
1.5 A
August 2012
GENERAL DESCRIPTION
The EXAR XRP7659 Evaluation kit is a fully
assembled and tested surface-mount PCB that
demonstrates the XRP7659 non-synchronous
step-down
switching regulator generates a preset 3.3V
output with a load of up to 1.5A.
The EVB kit requires a single input voltage VIN
source, if EN is tied to VIN via jumper J1
(default setting as supplied from EXAR). If J1
is set to EN=EXT position, then a logic-level
active-high signal is required at EN pin in
order to turn the regulator on and off.
STANDARD CONFIGURATION
The
configured to operate under the following
conditions and parameters:
 Input voltage range:
 Output voltage range:
 Output current/load range:
EVALUATION BOARD SCHEMATICS
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
XRP7659EVB
regulator.
VIN
GND
100k, 5%
3PIN_JUMPER
evaluation
1
1
R3
.
.
5
5
The
A
A
1
1
EN=EXT
J1
Fig. 1: XRP7659 Evaluation Board Schematics
8
8
4.5V - 18V
3.3V
0 – 1.5A
current-mode
V
V
1
1
board
10uF/25V
.
.
4
4
CIN
M
M
H
H
z
z
is
R2
14k, 1%
n
n
D1, MBR230LSFT1
2A/30V
o
o
U1
XRP7659
n
n
-
-
FEATURES
S
S
 1.5A Continuous Output Current
 4.5V to 18V Wide Input Voltage
 PWM Current-Mode Control
 Adjustable Output Voltage
 Enable Function and integrated
 Built-in Thermal, Over-Current, UVLO
 RoHS Compliant, “Green”/Halogen
y
y
 1.4MHz Constant frequency
 0.81V to 15V Range / ±3% Accuracy
Softstart
and Output Over-Voltage Protection
Free SOT-23-6 Package
n
n
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
R1
43k, 1%
c
c
CB
10nF
h
h
L1, 744777004
r
r
E
E
o
o
V
4.7uH, 4A
V
n
n
A
A
L
L
o
o
U
U
u
u
A
A
s
s
T
T
I
I
S
S
O
O
t
N
t
N
e
e
B
B
p
p
O
O
COUT
22uF/6.3V
-
-
A
A
D
D
R
R
o
o
D
D
VOUT
GND
w
w
M
M
n
n
A
A
X
X
N
N
www.exar.com
C
C
U
U
R
R
o
o
A
A
P
P
n
n
L
L
Rev. 1.0.0
v
7
v
7
e
e
6
6
r
r
5
5
t
t
e
e
9
9
r
r

Related parts for XRP7659EVB

XRP7659EVB Summary of contents

Page 1

... EXAR set to EN=EXT position, then a logic-level active-high signal is required at EN pin in order to turn the regulator on and off. STANDARD CONFIGURATION The XRP7659EVB evaluation configured to operate under the following conditions and parameters:  Input voltage range:  Output voltage range:  ...

Page 2

... UMPER 0 – 1.5A Jumper J1 can be used to either connect EN to VIN or allow an independent logic-level control signal to be applied to EN. The board is supplied from EXAR with jumper J1 set at left- side (position marked EN=VIN). This allows for automatic startup of the XRP7659 regulator when VIN is applied. 2/5 ...

Page 3

... A section of this manual. Fig. 3: Gain and Phase Margin Responses of XRP7659EVB Bode plots of the XRP7659EVB, as illustrated in Fig. 3, show a stable system with a ~60kHz crossover frequency and ~50dB phase margin. Furthermore, the XRP7659EVB is stable and exhibits similar performances with both the recommended resistors R1 and R2 at respectively 43kΩ and 14kΩ and the Monolithic Power System’ ...

Page 4

... Part Number Exar XRP7659EVB Exar XRP7659 MBR230LSFT1 744777004 GRM32DR61E106KA12L GRM31CR60J226KE19L GRM188R71H103KA01D ERJ-3EKF4302V ERJ-3EKF1402V ERJ-3EKF1003V 61304011121 609002115121 K24C/M 4 ...

Page 5

... While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized ...

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