X7AH-03C500 Datasheet, PDF (3/5 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS 3.0 V-3.6 V Input 5.0 V/3 A Output

NON-ISOLATED DC/DC CONVERTERS
3.0 V-3.6 V Input 5.0 V/3 A Output
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_{trim−down}
= ( ^12.033
V_o − V_adj
− 7.8)
R_trim−up
=
3.808
(
V_adj −V_o
−
4.64)
Module
Vout
Trim
Rtrim-down
GND
Module
Vout
Trim
GND
Rtrim-up
Note: Output voltage Vo=5.0128 V when Rtrim is open.
Efficiency Data
Vo=5.0V efficiency curve
90.0%
85.0%
80.0%
75.0%
0.300 0.750 1.500 2.250 3.000
Iout (A)
3.0 V
3.3 V
3.6 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com