S7DB-12B1AX Datasheet, PDF (4/7 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS

NON-ISOLATED DC/DC CONVERTERS
5.0V Input 0.9V to 3.3V/12A Output
Control Specifications
Parameter
Min
Typ
Remote On/Off
Signal Low (Unit Off)
0V
-
S7DB-12B1AH
Signal High (Unit On)
2.5V
-
Signal Low (Unit On)
0V
-
S7DB-12B1A0
Signal High (Unit Off)
2.5V
-
Max
Notes
1V
5.5V
Remote on/off pin open, unit
1V
on.
5.5V
Output Trim Equations
Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) 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
=
1330 ⋅V_adj − 1064
90.64 − 100 ⋅V_adj
− 3.65
Module
Vout
Trim
GND
Rtrimdown
R_TrimUp
=
1064
100 ⋅V_adj − 90.64
−
3.65
Module
Vout
Trim
GND
Rtrimup
Note: It is strongly recommended that the Trim Resistor be placed as near to the module as possible, otherwise
it may cause regulation problem.
Efficiency Data
98.00%
96.00%
94.00%
4.5V
92.00%
5.0V
5.5V
90.00%
88.00%
86.00%
1 2 3 4 5 6 7 8 9 10 11 12
Vo = 3.3V
98.00%
96.00%
94.00%
4.5V
92.00%
5.0V
5.5V
90.00%
88.00%
86.00%
1 2 3 4 5 6 7 8 9 10 11 12
Vo = 2.5V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com