X7AH-10J Datasheet, PDF (3/5 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS 2.5V Input 0.9V-1.65V/10A Output

NON-ISOLATED DC/DC CONVERTERS
2.5V Input 0.9V-1.65V/10A Output
General Specifications
Parameter
Efficiency
VO=1.5V
VO=1.2V
VO=1.0V
Switching Frequency
Output Trim Range
MTBF
Dimensions (surface mount)
Inches (L × W × H)
Millimeters (L × W × H)
Dimensions (vertical)
Inches (L × W × H)
Millimeters (L × W × H)
Weight
Min
Typ
Max
85%
83%
79%
250KHz
90%Vo
88%
86%
82%
300KHz
-
-
-
-
350KHz
110%Vo
4,447,157 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
-
4.7g
-
Notes
Measured at Vin=2.5V, full load and
Ta=25°C.
Calculated Per Bell Core TR-332 (IO =
Nominal; Ta = 25°C)
Control Specifications
Parameter
Min
Typ
Remote On/Off
Signal Low (Unit Off)
0V
-
Signal High (Unit On)
2V
-
Max
Notes
0.5V
Remote on/off pin open, the module is on.
5.5V
Output Trim Equations
Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) and the nominal
output voltage of the converter (Vnom) are shown below. The Trim Down resistor should be connected between
the Trim pin and Vout. 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.
R_TrimDown
=^A
V_nom − V_adj
−B
R_TrimUp
=
V_adj
C
− V_nom
−
D
Vnom
1.5V
1.2V
1.0V
A
49.788
31.241
11.029
B
287.900
223.900
92.800
C
43.330
43.330
25.550
D
226.000
162.000
56.200
Vout
Rtrimdown
Module Trim
GND
Vout
Module Trim
Rtrimup
GND
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com