DC/DC Converters
ctparts.com
SPECIFICATIONS
CTDD3120DF-T1K-3 Series
Wide Input Isolated & Regulated
3W Output, Twin Output
Part
Number
CTDD3120DF-050505-T1K-3
CTDD3120DF-050909-T1K-3
CTDD3120DF-051212-T1K-3
CTDD3120DF-051515-T1K-3
CTDD3120DF-120505-T1K-3
CTDD3120DF-120909-T1K-3
CTDD3120DF-121212-T1K-3
CTDD3120DF-121515-T1K-3
CTDD3120DF-150505-T1K-3
CTDD3120DF-150909-T1K-3
CTDD3120DF-151212-T1K-3
CTDD3120DF-151515-T1K-3
CTDD3120DF-240505-T1K-3
CTDD3120DF-240909-T1K-3
CTDD3120DF-241212-T1K-3
CTDD3120DF-241515-T1K-3
CTDD3120DF-480505-T1K-3
CTDD3120DF-480909-T1K-3
CTDD3120DF-481212-T1K-3
CTDD3120DF-481515-T1K-3
Vin
Nom.
(VDC)
5
5
5
5
12
12
12
12
15
15
15
15
24
24
24
24
48
48
48
48
Input Range
(VDC)
4.5-9.0
4.5-9.0
4.5-9.0
4.5-9.0
9.0-18
9.0-18
9.0-18
9.0-18
12-24
12-24
12-24
12-24
18-36
18-36
18-36
18-36
36-72
36-72
36-72
36-72
Vin
Max.*
(VDC)
11
11
11
11
22
22
22
22
30
30
30
30
40
40
40
40
80
80
80
80
Vo1,Vo2
(VDC)
5
9
12
15
5
9
12
15
5
9
12
15
5
9
12
15
5
9
12
15
Io1, Io2
Max.
(mA)
300
160
125
100
300
160
125
100
300
160
125
100
300
160
125
100
300
160
125
100
Io1, Io2
Min.
(mA)
30
16
13
10
30
16
13
10
30
16
13
10
30
16
13
10
30
16
13
10
Effi.
Typ.
(%)
72
74
78
78
73
77
79
79
74
78
79
79
77
79
80
80
77
80
81
81
Not shown at actual size.
Compliant
RoHS
*If Input voltage above specified may cause permanent damage to the device
FEATURES
Efficiency:
To 85%
Temperature Range:
-40°C to +85°C
Package:
UL94-V0
Isolation:
1KVDC
Miscellaneous:
Wide (2:1) Input Range. No heat sink required.
Industry Standard Pinout. Twin Isolated Output. Custom service
available.
Samples available.
ISOLATION SPECIFICATIONS
Item
Isolation Voltage
Isolation Resistance
Test Condition
Flash tested for 1 minute
Test at 500VDC
MIN
1000
1000
TYP
MAX
Units
VDC
MΩ
OUTPUT SPECIFICATIONS
Item
3W Output Power
Output voltage accuracy
Load regulation
Line regulation
Temperature drift (Vout)
Ripple
Noise
Switching frequency
Switching frequency
Refer to Recommended Circuit
From 10% to 100% load
Input Voltage from low to high
Refer to Temp. Derating Graph
20Hz to 300kHz Bandwidth
DC-20MHz Bandwidth
100% load, nominal input voltage
10% load, nominal input voltage
80
250
30
80
Test Condition
MIN
0.3
±1
±0.5
±0.2
TYP
MAX
3
±3
±1
±0.5
0.03
60
150
200
600
Units
W
%
%
%
%/°C
mVp-p
mVp-p
KHz
KHz
CHARACTERISTICS
Output Short Circuit Protection:
Continuous
Temperature Rise at Full Load:
30°C (Typ.)
Cooling:
Free air convection
No Load, Power Consumption:
100mW (typical)
Operating Temperature Range:
-40°C to +85°C
Storage Temperature Range:
-55°C to +125°C
Lead Temperature:
300°C (1.5mm from case for 10 seconds)
Storage Humidity Range:
< 95%
Case Material:
Plastic (UL94-V0)
MTBF:
>3,500,000 hours
Miscellaneous:
RoHS Compliant.
Note:
1. All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output unless
otherwise specified.
TYPICAL CHARACTERISTICS
Temperature Derating Graph
120
Output Power (%)
100
80
60
40
20
0
-40
0
120
40
71 85
Ambient Temperature (°C)
Safe Operating Area
12.20.06
Technologies
Manufacturer of Passive and Discrete Semiconductor Components
800-684-5322
Inside US
949-453-1811
Outside US
Copyright © 2006 by CT Magnetics, DBA Central Technologies. All rights reserved.
CT Magnetics reserves the right to make improvements or change specifications without notice
CENTRAL
DC/DC Converters
ctparts.com
CTDD3120DF-T1K-3 Series
Wide Input Isolated & Regulated
3W Output, Twin Output
OUTLINE DIMENSIONS & RECOMMENDED FOOTPRINT DETAILS
CTDD3120DF-T1K-3 Package
Bottom View
Side
View
31.80
0.50
9.45
2
15.24
3
9 10 11
20.30
23 22
16 15 14
5.08
2.54
4.00
22.86
Note: All pins on a 2.54mm pitch; all pin diameters are 0.50mm; all dimensions in mm. (Tolerance:±0.25)
PIN CONNECTIONS
Bottom View
Pin
2, 3
14
16
11
9
22, 23
Function
GND
Vo1
0V1
Vo2
0V2
Vin
2
3
9 10 11
23 22
16 15 14
RECOMMENDED CIRCUIT
All the CTDD3120DF-T1K-3
Series
have
been
tested
according
to the following recommended testing circuit
before
leaving factory. This
series should be
tested
under
load. Never
be
tested
under
no load (See figure 1 & 2). If you want to
further decrease the input/output ripple, you can increase capacitance properly or choose capacitors with low ESR.
However, the capacitance
should
not
be
too high (See table 1). If you want to
use
the products in high EMI, please choose
our metal packaged products.
External Capacitor Table (table 1)
Figure 2
Vin
5V
&
12V
24V
&
48V
C
in
C
out
(0+70°C)
C
out
(-40+85°C)
Figure 1
CS PIN
Vin
+
Cin
DC
DC
Cout
lp
Input Current (A)
100µF
+
CS CAP
Cout
100µF
(electrolytic
capacitor)
47µF
(tantalum
capacitor)
DC
+
0V1
Vout1
Vout2
0V2
10µF
GND
+
Input Voltage
Range
Input Voltage (V)
12.20.06
Technologies
Manufacturer of Passive and Discrete Semiconductor Components
800-684-5322
Inside US
949-453-1811
Outside US
Copyright © 2006 by CT Magnetics, DBA Central Technologies. All rights reserved.
CT Magnetics reserves the right to make improvements or change specifications without notice
CENTRAL
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
