DC/DC Converters
ctparts.com
SPECIFICATIONS
CTDD2408MF-SU6K-2 Series
Fixed Input Isolated & Unregulated
2W Output, Single Output
Part
Number
CTDD2408MF-0505-SU6K-2
CTDD2408MF-0512-SU6K-2*
CTDD2408MF-0515-SU6K-2
CTDD2408MF-1205-SU6K-2*
CTDD2408MF-1212-SU6K-2*
CTDD2408MF-1215-SU6K-2
Vin
Nom.
(VDC)
5
5
5
12
12
12
24
24
24
Input Range
(VDC)
4.5-5.5
4.5-5.5
4.5-5.5
10.8-13.2
10.8-13.2
10.8-13.2
21.6-26.4
21.6-26.4
21.6-26.4
Vout
(VDC)
5
12
15
5
12
15
5
12
15
Iout
Max.
(mA)
400
167
133
400
167
133
400
167
133
Iout
Min.
(mA)
40
17
13
40
17
13
40
17
13
Effi.
Typ.
(%)
76
79
78
76
80
79
77
80
78
Not shown at actual size.
CTDD2408MF-2405-SU6K-2*
CTDD2408MF-2412-SU6K-2*
CTDD2408MF-2415-SU6K-2*
*Designing.
Compliant
Item
Isolation Voltage
Isolation Resistance
Isolation Capacitance
RoHS
ISOLATION SPECIFICATIONS
Test Condition
Test at 500VDC
MIN
1000
10
TYP
MAX
Units
VDC
MΩ
pF
Tested for 1 min. & 1mA Max. 6000
OUTPUT SPECIFICATIONS
Item
Output Power
Line regulation
Load regulation
For Vin change of 1%
10% to 100% load(5V output)
10% to 100% load(12V output)
10% to 100% load(15V output)
Output voltage accuracy
Temperature drift
Ripple & Noise*
Switching frequency
See tolerance envelope graph
100% full load
20MHz Bandwidth
Full load, nominal input
150
50
0.03
200
%/°C
mVp-p
KHz
12.8
6.8
6.3
Test Condition
MIN
0.2
TYP
MAX
2
±1.2
15
15
15
Units
W
%
%
%
%
FEATURES
Efficiency:
To 80%
Temperature Range:
-40°C to +85°C
Isolation:
6KVDC
Package:
UL94-V0
Miscellaneous:
No heat sink required. No external component
required. Industry standard pinout. SMD Package. Continuous
short circuit protection. Internal SMD Construction.
Samples available.
*Test ripple and noise by “parallel cable” method. See detailed operation instructions at Testing of Power
Converter. Section, application notes.
TYPICAL CHARACTERISTICS
CHARACTERISTICS
Short Circuit Protection:
Continuous, automatic recovery
Temperature Rise at Full Load:
25°C Max. 15°C Typ.
Cooling:
Free air convection
Operating Temperature Range:
-40°C to +85°C
Storage Temperature Range:
-55°C to +125°C
Lead Temperature:
260°C Max. (1.5mm from case for 10
seconds)
Storage Humidity Range:
95% Max.
Case Material:
Plastic (UL94-V0)
MTBF:
3,500,000 hours
Weight:
3.8g Typ.
Miscellaneous:
RoHS Compliant.
Tolerance Envelope Graph
120
Tolerance Derating Graph
Output Power (%)
Output Voltage(%)
+10%
-5%
Nominal
Voltage
Typic
a
100
80
60
40
20
0
-40
0
85 105 120
40
Ambient Temperature (°C)
Safe Operating Area
l Load
Line
+2.5%
-2.5%
-7.5%
10%
50%
100%
Output Current(%)
02.18.09
CENTRAL
Manufacturer of Passive Components
800-684-5322
Inside US
949-453-1811
Outside US
Copyright © 2009 by CT Magnetics, DBA Central Technologies. All rights reserved.
CT Magnetics reserves the right to make improvements or change specifications without notice
TECHNOLOGIES
DC/DC Converters
ctparts.com
CTDD2408MF-SU6K-2 Series
Fixed Input Isolated & Unregulated
2W Output, Single Output
OUTLINE DIMENSIONS & PIN CONNECTIONS
23.86 (0.940)
8.00
(0.315)
7.50
(0.295)
(Side View)
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch)
3.04
(0.120)
18.50(0.728)
16
(Top View)
2.54
(0.100)
16
10 9
13.70
(0.540)
10 9
7 8
2.00
(0.079)
1
15.24(0.600)
78
1
1.00
(0.039)
FOOTPRINT DETAILS
A
13.10
(0.516)
18.50(0.728)
A
0.50
(0.020)
Pin
Function
1
GND
7
NC
8
NC
+Vo
9
10
-Vo
16
Vin
NC:No Connection
Note:
Unit: mm(inch)
Pin section: 0.60*0.25mm(0.010inch)
Pin tolerance: ±0.10mm(±0.004inch)
General tolerance: ±0.25mm(±0.010inch)
5.0MAX
1.35
(0.053)
0.2 5
(0.010)
02.18.09
CENTRAL
Manufacturer of Passive Components
800-684-5322
Inside US
949-453-1811
Outside US
Copyright © 2009 by CT Magnetics, DBA Central Technologies. All rights reserved.
CT Magnetics reserves the right to make improvements or change specifications without notice
TECHNOLOGIES
DC/DC Converters
ctparts.com
CTDD2408MF-SU6K-2 Series
Fixed Input Isolated & Unregulated
2W Output, Single Output
APPLICATION NOTES
L
Requirement On Output Load
To ensure this module can operate efficiently and reliably, a minimum load is
specified for this kind of DC/DC converter in addition to a maximum load (namely full
load). During operation, make sure the specified range of input voltage is not exceeded,
the minimum output load is
not less than 10%
of the full load, and that this product
should
never be operated under no load!
If the actual output power is very small,
please connect a resistor with proper resistance at the output end in parallel to increase
the load, or use our company's products with a lower rated output power.
Output Voltage Regulation and Over-voltage
Protection Circuit
The simplest device for output voltage regulation,
over-voltage and over-current protection is a linear
voltage regulator with overheat protection that is
connected to the input or output end in series (Figure
2).
Vin
GND
REG
+Vout
DC DC
0V
REG
Recommended testing and application circuit
If you want to further decrease the input/output
ripple, an "LC" filtering network may be connected to
the input and output ends of the DC/DC converter, see
(Figure 1).
L
Vin
Cin
G ND
L
+Vo
Vin
GND
+Vout
DC DC
0V
(Figure 2)
Overload Protection
Under norm al operating conditions, the output
circuit of these products has no protection against
overload. The simplest method is to connect a
self-recovery fuse in series at the input end or add a
circuit breaker to the circuit.
No parallel connection or plug and play.
DC DC
(Figure 1)
Cout
0V
It should also be noted that the inductance and the
frequency of the "LC" filtering network should be
staggered with the DC/DC frequency to avoid mutual
interference. However, the capacitance of the output
filter capacitor must be proper. If the capacitance is
too big, a startup problem might arise. For every
channel of output, provided the safe and reliable
operation is ensured, the recommended capacitance
of its filter capacitor sees (Table 1).
EXTERNAL CAPACITOR TABLE (Table 1)
Note:
1. All specifications measured at Ta=25°C, humidity<75%,
nominal input voltage and rated output load unless
otherwise specified.
2. Only typical models listed, other models may be different,
please contact our technical person for more details.
3. Operation under minimum load will not damage the
converter; However, they may not meet all specification
listed.
Vin
(VDC)
5
12
24
Cin
(uF)
4.7
2.2
1
Single Vout
(VDC)
5
12
15
Cout
(uF)
10
2.2
1
It's not recommend to connect any external capacitor in the
application field with less than 0.5 watt output.
02.18.09
CENTRAL
Manufacturer of Passive Components
800-684-5322
Inside US
949-453-1811
Outside US
Copyright © 2009 by CT Magnetics, DBA Central Technologies. All rights reserved.
CT Magnetics reserves the right to make improvements or change specifications without notice
TECHNOLOGIES
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