XRAH-03F1A0 Datasheet, PDF (3/9 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS 3.0 Vdc - 5.5 Vdc Input 0.9 Vdc - 3.3 Vdc/3 A Output

NON-ISOLATED DC/DC CONVERTERS
3.0 Vdc - 5.5 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
Output Trim Range (wide trim)
Min
88%
86%
83%
80%
77%
75%
250 kHz
100%Vo
Typ
92%
90%
87%
84%
81%
79%
300 kHz
-
Max
-
-
-
-
-
-
360 kHz
403%Vo
MTBF
Dimensions (surface mount)
Inches (L × W × H)
Millimeters (L × W × H)
Dimensions (vertical)
Inches (L × W × H)
Millimeters (L × W × H)
Weight
9,159,999 hours
0.78 x 0.70 x 0.32
19.81 x 17.78 x 8.13
0.70 x 0.308 x 0.65
17.78 x 7.82 x 16.51
-
5g
-
Notes
Measured at Vin=5 V, full load and
Ta=25 °C
Vo=0.9 V
Calculated Per Bell Core SR-332 (Vin=
5 V; Vo=3.3 V; IO = 80% load; 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
0.8 V
6V
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^3_.7_u¹_p²_−Vo −1_{⎟⎟⎠⎞}Kohm
Module
Vout
Trim
GND
Rtrim-up
Note: Output voltage Vo=0.902V when Ttrim-up is not connected.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com