参数资料
型号: VRAH-03C0900
厂商: BEL FUSE INC
元件分类: 电源模块
英文描述: 1-OUTPUT 2.7 W DC-DC REG PWR SUPPLY MODULE
封装: ROHS COMPLIANT PACKAGE-5
文件页数: 5/9页
文件大小: 191K
代理商: VRAH-03C0900
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
3.3 Vdc Input
0.9 Vdc - 2.5 Vdc/3 A Output
Output Trim Equations
Equations for calculating the trim resistor (in k) 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.
B
V
A
R
adj
nom
trimdown
=
D
V
C
R
nom
adj
trimup
=
Vnom
A
B
C
D
Notes
0.9 - 2.5
N/A
3.712
1.54
Vo=0.9 V when Rtrim is open
2.5
7.9117
16.14
3.712
11.5
Vo=2.505 V when Rtrim is open
1.8
4.6538
20.84
3.712
16.2
Vo=1.803 V when Rtrim is open
1.5
3.2633
16.14
3.712
11.5
Vo=1.503 V when Rtrim is open
1.2
1.8699
11.45
3.712
6.81
Vo=1.203 V when Rtrim is open
0.9
N/A
3.712
33.2
Vo=0.903 V when Rtrim is open
Module
Vout
Trim
GND
Rtrimdown
Module
Vout
Trim
GND
Rtrimup
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