CMMDW24S5-4000 Wall Industries,Inc., CMMDW24S5-4000 Datasheet - Page 6

• Manufacturer Part Number: CMMDW24S5-4000
• Description: 20w Dc/dc Chassis Mount Converter 9-36 Vdc Input 5 Vdc Single Output At 4000ma
• Manufacturer: Wall Industries,Inc.

Thermal Consideration
The power module operates in a variety of thermal environments. However, sufficient cooling should be provided
to help ensure reliable operation of the unit. Heat is removed by conduction, convention, and radiation to the
surrounding environment. Proper cooling can be verified by measuring the point as the figure below. The
temperature at this location should not exceed 105°C. When operating, adequate cooling must be provided to
maintain the test point temperature at or below 105°C. Although the maximum point temperature of the power
modules is 105°C, you can limit this temperature to a lower value for extremely high reliability.
Output Voltage Adjustment
Output voltage set point adjustment allows the user to increase or decrease the output voltage set point of a
module. This is accomplished by connecting an external resistor between the TRIM pin and either the +Vout or
-Vout pins. With an external resistor between the TRIM and -Vout pin, the output voltage set point increases. With
an external resistor between the TRIM and +Vout pin, the output voltage set point decreases.
(888) 597-WALL
Figure 4
Figure 3
www.wallindustries.com
Rev. A
Table 1
Trim
10%
1%
2%
3%
4%
5%
6%
7%
8%
9%
5.050V
5.100V
5.150V
5.200V
5.250V
5.300V
5.350V
5.400V
5.450V
5.500V
Trim
CMMDW24S5-4000
Measurement shown in inches (mm)
up
36.570 kΩ
16.580 kΩ
9.917 kΩ
6.585 kΩ
4.586 kΩ
3.253 kΩ
2.302 kΩ
1.588 kΩ
1.032 kΩ
0.588 kΩ
R
TECHNICAL DATASHEET
up
CMMDW24S5-4000
Trim
4.950V
4.900V
4.850V
4.800V
4.750V
4.700V
4.650V
4.600V
4.550V
4.500V
down
45.533 kΩ
20.612 kΩ
12.306 kΩ
8.152 kΩ
5.660 kΩ
3.999 kΩ
2.812 kΩ
1.922 kΩ
1.230 kΩ
0.676 kΩ
R
down
Page 6 of 11