X7AH-03F1A0 Datasheet, PDF (3/6 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS 3.0 V-5.5 V Input 0.9 V-3.3 V/3 A Output

NON-ISOLATED DC/DC CONVERTERS
3.0 V-5.5 V Input 0.9 V-3.3 V/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)
Output Trim Range (narrow trim)
VO=1.2 V-3.3 V
VO=0.9 V
MTBF
Dimensions (surface mount)
Inches (L × W × H)
Millimeters (L × W × H)
Dimensions (vertical)
Inches (L × W × H)
Millimeters (L × W × H)
Weight
Min
88%
86%
83%
80%
77%
75%
250 kHz
-
Typ
92%
90%
87%
84%
81%
79%
300 kHz
-
Max
-
-
-
-
-
-
360 kHz
403% Vo
90% Vo
-
-
-
110% Vo
110% Vo
7,800,000 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 TR-332 (Vin=
5 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
0.8 V
6V
Notes
Remote on/off pin open, unit on.
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 (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.
R_trim−up
= ^3.712
V_adj −V_o
−1
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