JTD20 Series
20 Watts
• Single and Dual Outputs
• Wide 4:1 Input Range
• 1.6” x 1” Footprint
• -40 °C to +100 °C Operation
• Full Load at 65 °C Ambient
• 3000 VDC Isolation
• Output Trim ±10%
• Remote On/Off
• 3 Year Warranty
DC-DC Converter
xxx Series
Dimensions:
JTD20:
1.6 x 1.0 x 0.41” (40.6 x 25.4 x 10.4 mm)
Models & Ratings
Input
Voltage
Output
Voltage
3.3 V
5V
12 V
9-36V
15 V
±5 V
±12 V
±15 V
3.3 V
5V
12 V
18-75V
15 V
±5 V
±12 V
±15 V
Output Current
5500 mA
4000 mA
1670 mA
1330 mA
±2000 mA
±835 mA
±665 mA
5500 mA
4000 mA
1670 mA
1330 mA
±2000 mA
±835 mA
±665 mA
Input Current
(1)
No Load
10 mA
10 mA
10 mA
15 mA
10 mA
15 mA
15 mA
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
10 mA
Full Load
850 mA
935 mA
945 mA
945 mA
970 mA
945 mA
940 mA
425 mA
465 mA
465 mA
455 mA
480 mA
465 mA
460 mA
Efficiency
89.0%
89.0%
88.5%
88.0%
86.0%
88.5%
88.5%
89.5%
90.0%
90.0%
91.0%
87.0%
90.0%
90.5%
Max. capacitive
load
(2)
10000 µF
6800 µF
1000 µF
680 µF
±2200 µF
±470 µF
±330 µF
10000 µF
6800 µF
1000 µF
680 µF
±2200 µF
±470 µF
±330 µF
Model Number
JTD2024S3V3
JTD2024S05
JTD2024S12
JTD2024S15
JTD2024D05
JTD2024D12
JTD2024D15
JTD2048S3V3
JTD2048S05
JTD2048S12
JTD2048S15
JTD2048D05
JTD2048D12
JTD2048D15
Notes
1. Input currents measured at nominal input voltage.
2. Maximum capacitive load is per output.
Mechanical Details
0.10
(2.54)
0.40
(10.16)
0.80
(20.32)
0.40
0.40
(10.16) (10.16)
0.10
(2.54)
0.02
(0.5)
Dia 0.04 (1.0)
1.60
(40.64)
Dia 0.04 (1.0)
0.41
(10.4)
1.00 (25.4)
Pin
1
2
3
4
5
6
Notes
Pin Connections
Single
+Vin
-Vin
+Vout
Trim
-Vout
Remote On/Off
Dual
+Vin
-Vin
+Vout
Common
-Vout
Remote On/Off
0.40
(10.16)
0.40
(10.16)
0.40
(10.16)
0.24
(6.0)
0.20
(5.08)
1. All dimensions are in inches (mm)
2. Weight: 0.064 lbs (29.0 g) approx.
3. Pin diameter: 0.04 ±0.002 (1.0 ±0.05)
4. Pin pitch tolerance: ±0.014 (±0.35)
5. Case tolerance: ±0.02 (±0.5)
1
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JTD20 Series
Input
Characteristic
Input Voltage Range
Input Reflected Ripple Current
Input Surge
Minimum
9
18
20
50
100
Typical
Maximum
36
75
DC-DC Converter
Units
VDC
VDC
mA pk-pk
VDC for 100 ms
VDC for 100 ms
Notes & Conditions
24 V nominal
48 V nominal
Through 12 µH inductor and 47 µF capacitor
24 V models
48 V models
Output
Characteristic
Output Voltage
Output Trim
Initial Set Accuracy
Minimum Load
Line Regulation
Load Regulation
Cross Regulation
Start Up Time
Ripple & Noise
Overload Protection
Short Circuit Protection
Maximum Capacitive Load
Temperature Coefficient
Overvoltage Protection
Remote On/Off
0.02
140
%/ ˚C
%
30
75/60
170
0
±0.5
0.5/1.0
±5
Minimum
3.3
±10
±1
Typical
Maximum
30
Units
VDC
%
%
%
%
`%
%
ms
mV pk-pk
%
Continuous hiccup mode, with auto recovery
See Models and Ratings table
Single/Dual Output, Measured using 20 MHz bandwidth and
10 µF/25 V MLCC per output
Notes & Conditions
See Models and Ratings table
Single output only, see Application Note
At full load
No minimum load required
From minimum to maximum input at full load
From 0% to full load for single/dual output
On dual output models, when one output is at 100% load
and other is varied from 25% load to full load
Output is on if remote on/off (pin 3) is open or high (3-12 VDC)
Output turns off if remote on/off (pin 3) is low (<1.2 VDC max)
General
Characteristic
Efficiency
Isolation: Input to Output
Isolation: Input and output to Case
Switching Frequency
Isolation Resistance
Isolation Capacitance
Power Density
Mean Time Between Failure
Weight
400
0.064 (29.0)
10
9
Minimum
3000
1600
Typical
85
Maximum
Units
%
VDC
VDC
Notes & Conditions
See Models and Ratings table
60 s
60 s
3V3 & 5 V models/other models
270/330
2000
30
kHz
pF
W/in
3
kHrs
lb (g)
Ω
MIL-HDBK-217F, +25 °C GB
Environmental
Characteristic
Operating Temperature
Storage Temperature
Case Temperature
Humidity
Cooling
Thermal Impedance to Air
12
°C/W
Minimum
-40
-55
Typical
Maximum
+100
+125
+105
95
Units
°C
°C
°C
%RH
Non-condensing
Natural convection
Notes & Conditions
See Derating Curve
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2
JTD20 Series
EMC: Emissions
Phenomenon
Conducted
Radiated
Standard
EN55032
EN55032
Test Level
Class A
Class A
DC-DC Converter
Notes & Conditions
No external components required
No external components required
EMC: Immunity
Phenomenon
ESD Immunity
Radiated Immunity
EFT/Burst
Surge
Conducted Immunity
Magnetic Fields
Standard
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
EN61000-4-8
Test Level
±6 kV/±8 kV
20 Vrms
2 kV
2 kV
10 V rms
100 A/m
Criteria
B
A
A
A
A
A
Requires 330 µF/100 V electrolytic and 3 kW TVS
(SMDJ58A for 24 V input, SMDJ120A for 48 V input)
Required 330 µF/100 V electrolytic and 3 kW TVS
(SMDJ58A for 24 V input, SMDJ120A for 48 V input)
Notes & Conditions
Contact Discharge/Air Discharge
Mechanical Details
1.00 (25.4)
0.10
(2.54)
0.40
(10.16)
0.80
(20.32)
0.40
0.40
(10.16) (10.16)
0.10
(2.54)
0.02
(0.5)
Dia 0.04 (1.0)
0.41
(10.4)
1.60
(40.64)
Pin Connections
Pin
Single
Dual
1
+Vin
+Vin
2
-Vin
-Vin
3
+Vout
+Vout
4
Trim
Common
5
-Vout
-Vout
6 Remote On/Off Remote On/Off
Notes
1. All dimensions are in inches (mm)
2. Weight: 0.042 lbs (19.0 g) approx.
3. Pin diameter: 0.04±0.002 (1.0 ±0.05)
4. Pin pitch tolerance: ±0.014 (±0.35)
5. Case tolerance: ±0.02 (±0.5)
Dia 0.04 (1.0)
0.40
(10.16)
0.40
(10.16)
0.40
(10.16)
0.24
(6.0)
0.20
(5.08)
Derating Curve
Output Power
100%
75%
A
Note: Point A is 60 °C for dual 5 V output models
50%
25%
-40
65 80
Ambient Temperature (°C)
100
3
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JTD20 Series
Application Notes
External Output Trimming
Output can be externally trimmed by using the method as below, (single output models only)
DC-DC Converter
5
6
Ru
5
6
Trim Up
4
JTD20
Bottom View
4
2
1
JTD20
Bottom View
2
1
Trim Down
Rd
3
3
Trim Down Resistor Values (Rd)
Models
3V3
5V
12V
15V
1%
309.0 k
119.9 k
345.0 k
174.4 k
2%
165.4 k
77.70 k
138.1 k
91.10 k
3%
105.6 k
50.50 k
79.90 k
56.60 k
4%
72.9 k
35.2 k
51.5 k
37.7 k
5%
52.3 k
25.3 k
34.6 k
25.8 k
6%
38.0 k
18.4 k
23.4 k
17.6 k
7%
27.6 k
13.4 k
15.5 k
11.6 k
8%
19.7 k
9.50 k
9.50 k
7.00 k
9%
13.5 k
6.40 k
4.90 k
3.50 k
10%
8.40 k
3.90 k
1.26 k
0.55 k
Trim Up Resistor Values (Ru)
Models
3V3
5V
12V
15V
1%
537.7 k
635.2 k
367.4 k
661.5 k
2%
177.1 k
170.0 k
179.6 k
231.3 k
3%
96.40 k
92.80 k
113.6 k
134.0 k
4%
60.8 k
61.1 k
79.9 k
91.0 k
5%
40.8 k
43.8 k
59.5 k
66.8 k
6%
27.9 k
32.9 k
45.8 k
51.3 k
7%
19.0 k
25.4 k
35.9 k
40.4 k
8%
12.4 k
20.0 k
28.5 k
32.5 k
9%
7.30 k
15.8 k
22.7 k
26.4 k
10%
3.40 k
12.5 k
18.1 k
21.5 k
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22 May 17
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