XRAH-03L1A0 Datasheet, PDF (3/7 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS

NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 24 Vdc Input 0.9 Vdc - 3.3 Vdc/3 A Output
General Specifications
Parameter
Efficiency
VO=3.3 V
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
Vo=0.9 V
Switching Frequency
Min
85%
82%
79%
77%
74%
72%
250 kHz
Typ
88%
85%
82%
80%
77%
75%
300 kHz
Max
-
-
-
-
-
-
360 kHz
MTBF
Dimensions (surface mount)
Inches (L × W × H)
Millimeters (L × W × H)
Dimensions (vertical)
Inches (L × W × H)
Millimeters (L × W × H)
Weight
9,900,543 hours
0.78 x 0.7 x 0.32
19.81 x 17.78 x 8.13
0.7 x 0.308 x 0.65
17.78 x 7.82 x 16.51
-
4.9 g
-
Notes
Vin=12.0V; lo=lo, max
Calculated Per Bell Core SR-332
(Vin=12 V; Vo=3.3 V; IO =2.4 A; Ta =
25 °C)
Control Specifications
Parameter
Min
Typ
Remote On/Off
Signal Low (Unit Off)
-0.3 V
-
Signal High (Unit On)
2.8 V
-
Max
1V
24 V
Notes
Remote on/off pin open, Unit On
Output Trim Equations
Equations for calculating the trim resistor given the desired adjusted voltage (Vadj) and the nominal output voltage
of the converter (Vo) are shown below. The Trim Up resistor should be connected between the Trim pin and
Ground. Only one of the resistors should be used for any given application.
Rtrim_up = _{⎜⎜⎝⎛Vadj}^6_.9_u²_p⁸_−Vo −1_{⎟⎟⎠⎞}Kohm
Module
Vout
Trim
GND
Rtrim-up
Note: Output voltage Vo=0.902 V when Rtrim_up is not connected.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com