XRSB-40U_11 Datasheet, PDF (2/21 Pages) Bel Fuse Inc. – ISOLATED DC/DC CONVERTERS

ISOLATED DC/DC CONVERTERS
24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 A Outputs, 1/16 Brick
Converter
Apr. 07, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Part Number Explanation
x R SB – 40 U xx x
12 3 4 5 67
1---Replace”x” with “S” to indicate SMT package, or “0” to indicate through hole package
2---RoHS 6, change “R” to “7” means RoHS 5
3---Series name, 1/16 Brick
4---Series code
5---Input range (18-75V)
6---Output voltage, V2=1.2Vout, V5=1.5Vout, V8=1.8Vout, 02=2.5Vout, 03=3.3Vout, 05=5.0Vout, 12=12Vout
7---Option, “x” of the model part number to be 0-9, A-Z, which will represent the special request of
customer.
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Unit
Notes
Input Voltage (continuous)
-0.3
-
80
V
Input Transient Voltage
-
-
100
V 100mS maximum
Remote On/Off
-0.3
-
18
V
I/O Isolation Voltage
-
-
1500
V
Ambient Temperature
-40
-
85
C
Storage Temperature
-55
-
125
C
Note: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may
permanently damage the device.
Input Specifications
Parameter
Min
Typ
Max Unit
Input Voltage
18
48
75
V
Input Current (full load)
Vo=1.2 V - 1.8 V
-
Vo=2.5 V - 3.3 V
-
Vo=5.0 V - 12 V
-
-
2.5
A
-
3.0
A
-
3.5
A
Input Current (no load)
-
60
120
mA
Notes
Remote Off Input Current
-
1
3
mA
Input Reflected Ripple Current
(pk-pk)
-
Input Reflected Ripple Current
(rms)
-
Tested with simulated source
20
50
mA _{impedance of 15 uH, 5 Hz to 20 MHz;}
use a 100 uF/100 V electrolytic
3
7
mA
capacitor with ESR=1 ohm max at 200
kHz at the input.
Input Over Voltage Lockout
I²t Inrush Current Transient
78
-
82
V
-
0.01
0.02
A²s
Turn-on Voltage Threshold
16.6
17.2
17.8
V
Turn-off Voltage Threshold
16.2
16.8
17.4
V
Note: All specifications are typical at nominal input, full load at 25 C unless otherwise stated.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel [phone]  Fax [phone]  www.belfuse.com
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