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LW025 Datasheet(PDF) 2 Page - Tyco Electronics

Part No. LW025
Description  LW025 Single-Output-Series Power Modules 36 Vdc to 75 Vdc Inputs 25 W
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Maker  MACOM [Tyco Electronics]
Homepage  http://www.macom.com
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LW025 Datasheet(HTML) 2 Page - Tyco Electronics

 
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Tyco Electronics Corp.
Advance Data Sheet
March 1999
36 Vdc to 75 Vdc Inputs; 25 W
LW025 Single-Output-Series Power Modules:
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the devices. These are
absolute stress ratings only. Functional operation of the devices is not implied at these or any other conditions in
excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect device reliability.
* Maximum case temperature varies based on power dissipation. See derating curves, Figures 15—16, for details.
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Table 1. Input Specifications
Fusing Considerations
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone
operation to an integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fus-
ing is not included; however, to achieve maximum safety and system protection, always use an input line fuse. The
safety agencies require a normal-blow fuse with a maximum rating of 5 A (see Safety Considerations section).
Based on the information provided in this data sheet on inrush energy and maximum dc input current, the same
type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data for further information.
Parameter
Symbol
Min
Max
Unit
Input Voltage:
Continuous
Transient (100 ms)
VI
VI, trans
0
0
80
100
Vdc
V
Operating Case Temperature (See Figure 16.)
TC
–40
110*
°C
Storage Temperature
Tstg
–40
120
°C
I/O Isolation Voltage
1500
Vdc
Parameter
Symbol
Min
Typ
Max
Unit
Operating Input Voltage
VI
36
48
75
Vdc
Maximum Input Current
(VI = 0 V to VI, max; IO = IO, max; see Figures 1 and 2.)
II, max
——
1.2
A
Inrush Transient
i2t—
0.1
A2s
Input Reflected-ripple Current
(50 Hz to 20 MHz; 12 µH source impedance,
TC = 25 °C; see Figure 10.)
II
—3
mAp-p
Input Ripple Rejection (100 Hz—120 Hz)
60
dB


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