P
Premier
M
Magnetics Inc.
"INNOVATORS IN MAGNETICS TECHNOLOGY"
2.25 WATT ETHERNET
DC/DC CONVERTERS
INPUT SPECIFICATIONS
%
Voltage ................................................. 12.0Vdc
%
Voltage Range ......................................... ±10%
%
Input Filter ...............................................
π
Filter
FEATURES
!
"
#
$
2.25 Watts
Fully Regulated Output
Continuous Short Circuit Protection
5-Pin Low Profile Package
GENERAL SPECIFICATIONS
%
%
%
%
%
Efficiency (regulated) .................... 50% min.
Switching Frequency .................. 20KHz min.
Isolation Voltage .................. 2500Vdc min.
Operating Temperature ........... 0 to +71
O
C
Storage Temperature ............ -40 to +85
O
C
OUTPUT SPECIFICATIONS
%
%
%
%
%
%
Voltage ............................................... Per Table
Voltage Accuracy ...................................... ±5%
Short Circuit Protection ....... Power Foldback
Ripple & Noise 20MHz BW ........... 100mV p-p
Line Regulation .................................... ±0.30%
Load Regulation .................................. ±0.50%
ELECTRICAL SPECIFICATIONS AT 25
O
C - OPERATING TEMPERATURE RANGE 0
O
C TO 71
O
C
PART
NUMBER
B4AR120925
B4AR121051
PACKAGE
PHYSICAL DIMENSIONS ....
DIMENSIONS IN mm (inches)
0.400
(10.16)
0.400
(10.16)
INPUT
VOLTAGE
(Vdc)
OUTPUT
VOLTAGE
(Vdc)
OUTPUT
CURRENT
(mA max.)
INPUT CURRENT (mA typ.)
REGULATED
OUTPUT
NO LOAD
FULL LOAD
12
12
9
+10/+5
250
150/110
YES
YES
50
60
380
350
SCHEMATIC
PIN CONNECTIONS
PIN
NUMBER B4AR120925 B4AR121051
1
2
3
4
5
+INPUT
-INPUT
N/C
+OUT
-OUT
+INPUT
-INPUT
+10V
COMMON
+5V
.040
DIA.
(1.02)
1.30
(33.00)
.400
.400
(10.16) (10.16)
.250
(6.35)
.250
(6.35)
--
OUT
+
OUT
NC
+
5
COM
+
10
3
4
5
.800
(20.32)
1.30
(33.00)
P
M
B4AR120925
YYWW
-- +
IN IN
P
M
B4AR121051
YYWW
-- +
IN IN
1
2
.200
(5.08)
.550
(13.97)
Specifications subject to change without notice.
TOLERANCE IN INCHES
XX± 0.02
XXX± 0.010
b4ar 8/97
20381 BARENTS SEA CIRCLE, LAKE FOREST, CA 92630
•
TEL: (949) 452-0511
•
FAX: (949) 452-0512
•
http://www.premiermag.com
1
PMI [ PREMIER MAGNETICS, INC. ]
