XRAH-07C1A0_07 Datasheet, PDF (3/7 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS

NON-ISOLATED DC/DC CONVERTERS
3.3 Vdc Input 0.9 Vdc - 2.5 Vdc/7 A Output
General Specifications
Parameter
Efficiency
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
VO=1.0 V
VO=0.9 V
Switching Frequency
Output Trim Range
Min
90%
86%
84%
81%
79%
78%
250 kHz
50%
Typ
92%
88%
86%
83%
81%
80%
300 kHz
-
Max
-
-
-
-
-
-
340 kHz
146%
MTBF
3,391,747 hours
Dimensions (surface mount)
Inches (L × W × H)
Millimeters (L × W × H)
Dimensions (vertical)
Inches (L × W × H)
Millimeters (L × W × H)
Weight
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=3.3 V, full load and
Ta=25 °C
VO=1.8 V
Calculated Per Bell Core SR-332
(Vin=3.3 V; Vo=1.8 V; IO = 5.6 A; Ta =
25°C)
Control Specifications
Parameter
Min
Typ
Remote On/Off
Signal Low (Unit Off)
-0.3 V
-
Signal High (Unit On)
1.8 V
-
Max
1V
3.6 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 (Vnom) are shown below. The Trimup resistor should be connected between the Trim pin
and Ground and the Trimdown resistor should be connected between the Trim pin and Vout pin.
Rtrim_ up = ( ^3.064 − 0.261)K ohm
Vo, adj −Vo
Rtrim _ down = ( ^3.8488 − 4.091)Kohm
Vo − Vo, adj
Note: Output voltage Vo=1.8 V when Rtrim is open.
Module
Vout
Trim
GND
Rtrimup
Module
Vout
Trim
GND
Rtrimdown
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com