Data Sheet
March 2008
DC025 Dual-Output-Series Power Modules:
18 Vdc to 36 Vdc Input; 25 W
Features
n
Small size: 71.1 mm x 61.0 mm x 12.7 mm
(2.80 in. x 2.40 in. x 0.50 in.)
Efficiency greater than 80%
Wide operating temperature range
Low output noise
Industry-standard pinout
Metal case with separate case ground pin
2:1 input voltage range
Two tightly regulated outputs
Remote on/off (positive logic)
UL*
Recognized,
CSA
†
Certified, and VDE
Licensed
Within FCC and CISPR Class A radiated limits
n
n
n
n
n
n
The DC025 Dual-Output-Series Power Modules use advanced,
surface-mount technology and deliver high-quality, compact,
dc-dc conversion at an economical price.
n
n
n
Options
n
n
n
Higher accuracy output voltage clamp set point
Short pins: 2.79 mm ± 0.25 mm
(0.110 in. ± 0.010 in.)
Heat sink available for extended operation
Negative logic remote on/off
Applications
n
n
n
n
Distributed power architectures
Telecommunications
Description
The DC025 Dual-Output-Series Power Modules are dc-dc converters that operate over an input voltage range
of 18 Vdc to 36 Vdc and provide two regulated outputs. These modules offer low noise levels with industry-
standard pinouts in a small footprint. Each highly reliable and efficient unit features remote on/off and current
limit.
Each output is individually regulated by its own control circuit and has an independent overvoltage clamp. With
standard outputs of +3.3 V, ±5 V, ±12 V, and ±15 V, the DC025 Dual-Output-Series Power Modules are flexible
enough to provide modified standard units with any combination of output voltages from 2 V to 15 V.
The DC025AJ-M, BK-M, and CL-M Power Modules are available with common output ground pins (pinout A);
the DC025AA-M, AB-M, AF-M, BB-M, and CC-M Power Modules are available with separate output ground
pins (pinout B).
*
UL
is a registered trademark of Underwriters Laboratories, Inc.
†
CSA
is a registered trademark of Canadian Standards Association.
DC025 Dual-Output-Series Power Modules:
18 Vdc to 36 Vdc Input; 25 W
Data Sheet
March 2008
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device 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.
Parameter
Input Voltage (continuous)
I/O Isolation Voltage:
dc
Transient (1 minute)
Operating Case Temperature
Storage Temperature
Symbol
V
I
—
—
T
C
T
stg
Min
—
—
—
–40
–55
Max
50
500
850
100
125
Unit
V
V
V
°C
°C
Electrical Specifications
Note:
Two pinouts are available for the DC025 Dual-Output-Series Power Modules. The DC025AJ-M, AB-M,
BK-M, and CL-M Power Modules, which have both positive and negative outputs, have a common output
ground pin (pinout A). The DC025AA-M, AB-M, AF-M, BB-M, and CC-M Power Modules, which have dual
positive outputs, have separate output ground pins (pinout B). See Outline Diagrams section.
Unless otherwise indicated, specifications apply to all modules over all operating input voltage, resistive load, and
temperature conditions.
Table 1. Input Specifications
Parameter
Operating Input Voltage
Maximum Input Current
(V
I
= 0 V to 36 V; I
O
= I
O
,
max
; see Figure 1.)
Inrush Transient
Input Reflected-ripple Current, Peak-to-Peak
(5 Hz to 20 MHz, 12 µH source impedance;
T
C
= 25 °C; see Figure 11 and Design
Considerations section.)
Input Ripple Rejection (120 Hz)
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, dc 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.
Symbol
V
I
I
I, max
i
2
t
—
Min
18
—
—
—
Typ
28
—
—
25
Max
36
3.0
0.8
—
Unit
Vdc
A
A
2
s
mAp-p
—
—
60
—
dB
2
Lineage Power
Data Sheet
March 2008
DC025 Dual-Output-Series Power Modules:
18 Vdc to 36 Vdc Input; 25 W
Electrical Specifications
(continued)
Table 2. Output Specifications
Parameter
Output Voltage Set Point
(V
I
= 28 V; I
O
= I
O, max
; T
C
= 25 °C)
Device
DC025AJ-M
DC025BK-M
DC025CL-M
DC025AA-M
DC025AB-M
DC025AF-M
DC025BB-M
DC025CC-M
Output Voltage
(Over all operating input voltage,
resistive load, and temperature
conditions until end of life. See
Figure 13.)
DC025AJ-M
DC025BK-M
DC025CL-M
DC025AA-M
DC025AB-M
DC025AF-M
DC025BB-M
DC025CC-M
Output Regulation:
Line (V
I
= 18 V to 36 V)
Load (I
O1
= I
O, min
to I
O, max,
I
O2 =
I
O, max
)
Load (I
O2
= I
O, min
to I
O, max,
I
O1 =
I
O, max
)
Symbol
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1
V
O2
V
O1
V
O2
V
O1
V
O2
V
O1
V
O2
V
O1
V
O2
V
O1
V
O2
V
O1
V
O2
V
O1
V
O2
—
—
—
Min
4.90
– 4.90
11.76
–11.76
14.70
–14.70
4.90
4.90
4.90
11.76
4.90
3.23
11.76
11.76
14.70
14.70
4.80
– 4.80
11.40
– 11.40
14.25
–14.25
4.80
4.80
4.80
11.40
4.80
3.16
11.40
11.40
14.25
14.25
—
—
—
Typ
5.0
–5.0
12.0
–12.0
15.0
–15.0
5.0
5.0
5.0
12.0
5.0
3.3
12.0
12.0
15.0
15.0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.1
0.1
0.1
Max
5.10
–5.10
12.24
–12.24
15.30
–15.30
5.10
5.10
5.10
12.24
5.10
3.37
12.24
12.24
15.30
15.30
5.25
–5.25
12.60
–12.60
15.75
–15.75
5.25
5.25
5.25
12.60
5.25
3.45
12.60
12.60
15.75
15.75
0.2
0.4
0.4
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
%
%
%
All
All
DC025AJ-M,
AA-M, BK-M,
BB-M, CL-M,
CC-M, AB-M
DC025AF-M
DC025AJ-M,
AA-M, AF-M
DC025BK-M,
BB-M
DC025CL-M,
CC-M
DC025AB-M
(5 V output)
DC025AB-M
(12 V output)
—
—
—
—
—
—
—
—
—
—
—
—
0.4
15
40
40
15
40
0.8
70
150
190
70
150
%
mV
mV
mV
mV
mV
Temperature
(T
C
= – 40 °C to +100 °C)
Lineage Power
3
DC025 Dual-Output-Series Power Modules:
18 Vdc to 36 Vdc Input; 25 W
Data Sheet
March 2008
Electrical Specifications
(continued)
Table 2. Output Specifications
(continued)
Parameter
Output Ripple and Noise
(See Figure 12.):
RMS
Device
Symbol
Min
Typ
Max
Unit
DC025AJ-M,
AA-M, AF-M
DC025BK-M, BB-M
DC025CL-M, CC-M
DC025AB-M
(5 V output)
DC025AB-M
(12 V output)
—
—
—
—
—
—
—
—
—
—
I
O1
I
O2
I
O1
I
O2
I
O1
I
O2
I
O1
I
O2
—
—
—
I
O1
I
O2
—
—
—
I
O1
I
O2
η
η
η
η
η
—
—
—
—
—
—
—
—
—
—
0.20
0.20
0.10
0.10
0.08
0.08
0.20
0.10
—
—
—
—
—
—
—
—
—
—
75
68
75
79
79
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.7
1.5
1.3
3.7
1.5
3.5
1.0
1.0
3.5
1.0
78
75
79
82
82
15
20
25
15
20
150
200
250
150
200
2.50
2.50
1.04
1.04
0.83
0.83
2.50
1.04
6.5
2.9
2.7
6.5
2.9
7.0
3.0
3.0
7.0
3.0
—
—
—
—
—
mVrms
mVrms
mVrms
mVrms
mVrms
mVp-p
mVp-p
mVp-p
mVp-p
mVp-p
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
%
%
%
%
%
Peak-to-peak (5 Hz to 20 MHz)
DC025AJ-M,
AA-M, AF-M
DC025BK-M, BB-M
DC025CL-M, CC-M
DC025AB-M
(5 V output)
DC025AB-M
(12 V output)
Output Current
(At I
O
< I
O, min
, the modules may exceed
output ripple specifications.)
DC025AJ-M,
AA-M, AF-M
DC025BK-M, BB-M
DC025CL-M, CC-M
DC025AB-M
Output Current-limit Inception
(V
O
= 90% of V
O, nom
; see Figure 2.)
DC025AJ-M,
AA-M, AF-M
DC025BK-M, BB-M
DC025CL-M, CC-M
DC025AB-M
Output Short-circuit Current
(V
O
= 250 mV)
DC025AJ-M,
AA-M, AF-M
DC025BK-M, BB-M
DC025CL-M, CC-M
DC025AB-M
Efficiency
(V
I
= 28 V; I
O
= I
O, max
; T
C
= 25 °C; see
Figures 3 and 13.)
DC025AJ-M, AA-M
DC025AF-M
DC025AB-M
DC025BK-M, BB-M
DC025CL-M, CC-M
4
Lineage Power
Data Sheet
March 2008
DC025 Dual-Output-Series Power Modules:
18 Vdc to 36 Vdc Input; 25 W
Electrical Specifications
(continued)
Table 2. Output Specifications
(continued)
Parameter
Dynamic Response
(½I
O
/½t = 1 A/10 µs, V
I
= 28 V,
T
A
= 25 °C):
Load Change from I
O
= 50% to 75% of
I
O, max
(See Figures 7 to 9.):
Peak Deviation
DC025AJ-M,
AA-M, AF-M
DC025BK-M,
BB-M
DC025CL-M,
CC-M
DC025AB-M
(5 V output)
DC025AB-M
(12 V output)
Settling Time (V
O
< 10% peak
deviation)
Load Change from I
O
= 50% to 25% of
I
O, max
(See Figures 4 to 6.):
Peak Deviation
DC025AJ-M,
AA-M, AF-M
DC025BK-M,
BB-M
DC025CL-M,
CC-M
DC025AB-M
(5 V output)
DC025AB-M
(12 V output)
Settling Time (V
O
< 10% peak
deviation)
Table 3. Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Min
—
10
Typ
1200
—
Max
—
—
Unit
pF
M¾
All
—
—
—
—
—
—
—
—
—
—
—
—
160
250
250
160
250
3
—
—
—
—
—
—
mV
mV
mV
mV
mV
ms
All
—
—
—
—
—
—
—
—
—
—
—
—
160
250
250
160
250
3
—
—
—
—
—
—
mV
mV
mV
mV
mV
ms
Device
Symbol
Min
Typ
Max
Unit
General Specifications
Parameter
Calculated MTBF (I
O
= 80% of I
O, max
; T
C
= 40 °C)
Weight
Lineage Power
—
Min
Typ
2,800,000
—
113 (4.0)
Max
Unit
hours
g (oz.)
5
京公网安备 11010802033920号
EEWORLD
