DC/DC Converters
ctparts.com
SPECIFICATIONS
4:1 Wide Input Isolated & Regulated
3W Output, Dual Output
Not shown at actual size.
CTDD3120DF-D1.5K-3
Series
Part
Number
CTDD3120DF-2405-D1.5K-3
CTDD3120DF-2412-D1.5K-3
CTDD3120DF-2415-D1.5K-3
CTDD3120DF-4805-D1.5K-3
CTDD3120DF-4812-D1.5K-3
CTDD3120DF-4815-D1.5K-3
Vin
Nom.
(VDC)
24
24
24
48
48
48
Input Range
(VDC)
9-36
9-36
9-36
18-72
18-72
18-72
Vin
Max.*
(VDC)
40
40
40
80
80
80
Vout
(VDC)
±5
±12
±15
±5
±12
±15
Iout
Max.
(mA)
±300
±125
±100
±300
±125
±100
Iout
Min.
(mA)
±30
±12
±10
±30
±12
±10
Effi.
Typ.
(%)
72
78
76
72
78
76
*If Input voltage above specified may cause permanent damage to the device
Compliant
RoHS
ISOLATION SPECIFICATIONS
Item
Isolation Voltage
Isolation Resistance
Test Condition
Flash tested for 1 minute
Test at 500VDC
MIN
1500
1000
TYP
MAX
Units
VDC
MΩ
OUTPUT SPECIFICATIONS
Item
3W Output Power
Voltage accuracy
Load regulation
Line regulation
Temperature drift (Vout)
Ripple
Noise
Switching frequency
Refer to Recommended Circuit
From 10% to 100% load
Input Voltage from low to high
Refer to Temp. Derating Graph
20MHz Bandwidth
20MHz Bandwidth
100% load, nominal input voltage
50
Test Condition
MIN
0.3
±1
±0.5
±0.2
TYP
MAX
3
±3
±1
±0.5
±0.03
50
150
300 (PFM)
Units
W
%
%
%
%/°C
mVp-p
mVp-p
KHz
FEATURES
Efficiency:
To 78%
Temperature Range:
-40°C to +85°C
Isolation:
1.5KVDC
Package:
UL94-V0
Miscellaneous:
Wide (4:1) Input Range. Dual Output. No heat
sink required. Short Circuit Protection. Custom service available.
Samples available.
Note:
1. All specifications measured at T
A
=25°C, humidity<75%, nominal input voltage and rated output unless
otherwise specified.
TYPICAL CHARACTERISTICS
Temperature Derating Graph
120
CHARACTERISTICS
Output Short Circuit Protection:
Continuous Automatic
Recovery.
Temperature Rise at Full Load:
15°C (Typ.)
Cooling:
Free air convection
No Load, Power Consumption:
200mW (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:
>1,000,000 hours
Miscellaneous:
RoHS Compliant.
Output Power (%)
100
80
60
40
20
0
-40
0
120
40
71 85
Operating Temperature (°C)
Safe Operating Area
08.13.07
Technologies
Manufacturer of Passive and Discrete Semiconductor Components
800-684-5322
Inside US
949-453-1811
Outside US
Copyright © 2007 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-D1.5K-3 Series
4:1 Wide Input Isolated & Regulated
3W Output, Dual Output
OUTLINE DIMENSIONS & RECOMMENDED FOOTPRINT DETAILS
CTDD3120DF-D1.5K-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
2 x 2.54
2.54
4.00
22.86
Note: All pin diameter: 0.8 ± 0.05; Tolerances: ± 0.5
PIN CONNECTIONS
Bottom View
Pin
2, 3
10, 15
14
11
9, 16
22, 23
Function
GND
NC
+Vo
-Vo
0V
Vin
2
3
9 10 11
23 22
16 15 14
RECOMMENDED CIRCUIT
All the CTDD3120DF-D1.5K-3
Series
have
been
tested
according
to the following recommended testing circuit
before
leaving factory. This
series should be
tested
under
load (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.
Figure 2
Figure 1
Vo+
0V
Vo-
Input Current(A)
External Capacitor Table (table 1)
Vin
C
in
C
out
(0+70°C)
100µF
(electrolytic
capacitor)
C
out
(-40+85°C)
47µF
(tantalum
capacitor)
Ip
24V
&
48V
10µF -
47µF
Input Voltage
Range
Input Voltage (V)
08.13.07
Technologies
Manufacturer of Passive and Discrete Semiconductor Components
800-684-5322
Inside US
949-453-1811
Outside US
Copyright © 2007 by CT Magnetics, DBA Central Technologies. All rights reserved.
CT Magnetics reserves the right to make improvements or change specifications without notice
CENTRAL
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