1
︳
EC4A SERIES
5-6 WATT 2:1 INPUT RANGE
DC-DC CONVERTERS
FEATURE
S
* 5-6W Isolated Output
* 24-Pin DIP Package
* Efficiency to 87%
* 2:1 Input Range
* Regulated Outputs
* Pi Input Filter
* Continuous Short Circuit Protection
* Meet EMI EN55022 class A (“-E” model)
* No Tantalum Capacitor inside (“-E” model)
* Wide Operating Temperature Range (“-E” model)
* UL60950-1 Approval for H/HM Versions only and “-E” Model
NOTE:
1. Suffix “-E” of the models are high efficiency and wide operating temperature version.
2. Nominal Input Voltage is 12, 24 or 48 VDC.
3. Typical value at nominal input voltage and full load.
MODEL
NUMBER
(1)
INPUT
VOLTAGE
(2)
OUTPUT
VOLTAGE
OUTPUT
CURRENT
INPUT CURRENT % EFF.
(3)
CAPACITOR
LOAD MAX.
NO LOAD FULL LOAD
“-E” “-E” “-E” “-E”
EC4A01
9-
18 VDC
5 VDC
10
00 mA
10
00 mA
7.5
mA
7.5
mA
541 mA
514
mA
77 81
4700uF
EC4A02
9-
18 VDC
12 VDC
47
0 mA
50
0 mA
7.5
mA
10
mA
573 mA
595
mA
82 84
4700uF
EC4A03
9-
18 VDC
1
5 VDC
4
00 mA
4
00 mA
7.5
mA
15
mA
625 mA
588
mA
80 85
4700uF
EC4A04
9-
18 VDC
±
12 VDC
±230
mA
±250
mA
12
mA
12
mA
554 mA
588
mA
83 85
2200uF
EC4A05
9-
18 VDC
±15
VDC
±190
mA
±200
mA
12
mA
18
mA
556 mA
588
mA
81 85
2200uF
EC4A06
9-
18 VDC
±5
VDC
±500
mA
±500
mA
12
mA
12
mA
541 mA
514
mA
77 81
2200uF
EC4A07
9-
18 VDC
3.3 VDC
100
0 mA
120
0 mA
7.5
mA
7.5
mA
382 mA
429
mA
72 77
4700uF
EC4A11
18-
36 VDC
5 VDC
10
00 mA
10
00 mA
5
mA
5
mA
260 mA
251
mA
80 83
4700uF
EC4A12
18-
36 VDC
12 VDC
47
0 mA
50
0 mA
5
mA
8
mA
280 mA
291
mA
84 86
4700uF
EC4A13
18-
36 VDC
15 VDC
4
00 mA
4
00 mA
5
mA
8
mA
298 mA
287
mA
84 87
4700uF
EC4A14
18-
36 VDC
±
12 VDC
±230
mA
±250
mA
7.5
mA
8
mA
280 mA
291
mA
82 86
2200uF
EC4A15
18-
36 VDC
±15
VDC
±190
mA
±200
mA
7.5
mA
10
mA
293 mA
287
mA
81 87
2200uF
EC4A16
18-
36 VDC
±5
VDC
±500
mA
±500
mA
7.5
mA
8
mA
260 mA
254
mA
80 82
2200uF
EC4A17
18-
36 VDC
3.3 VDC
100
0 mA
120
0 mA
5
mA
5
mA
186 mA
209
mA
74 79
4700uF
EC4A21
36-
72 VDC
5 VDC
10
00 mA
10
00 mA
2
mA
3
mA
132 mA
126
mA
79 83
4700uF
EC4A22
36-72 V
DC
12 VDC
47
0 mA
50
0 mA
2
mA
6
mA
142 mA
144
mA
83 87
4700uF
EC4A23
36-
72 VDC
15 VDC
4
00 mA
4
00 mA
2
mA
6
mA
154 mA
144
mA
81 87
4700uF
EC4A24
36-
72 VDC
±
12 VDC
±230
mA
±250
mA
3
mA
6
mA
142 mA
144
mA
81 87
2200uF
EC4A25
36-
72 VDC
±15
VDC
±190
mA
±200 m
A
3
mA
6
mA
147 mA
144
mA
81 87
2200uF
EC4A26
36-
72 VDC
±5
VDC
±500
mA
±500
mA
3
mA
5
mA
130 mA
126
mA
80 83
2200uF
EC4A27
36-
72 VDC
3.3 VDC
100
0 mA
120
0 mA
2
mA
2
mA
93 mA
104
mA
74 79
4700uF
2
SPECIFICATIONS
All Specifications Typical At Nominal Line, Full Load, and 25℃ Unless Otherwise Noted
INPUT SPECIFICATIONS: GENERAL SPECIFICATIONS:
Input Voltage Range ....…………..........….... 12V .............................. 9-18V
Efficiency ................................................................................. See Table
24V ............................ 18-36V
Isolation Voltage:
48V ............................ 36-72V
500 VDC min. ………….…………………………… Standard Models
Input Surge Voltage (100ms max.) ………… 12V …….….......... 25Vdc max.
3K VDC min. ... (Non-Conductive Black Plastic Only) …… Suffix “H” Models
24V ....................... 50Vdc max.
1.5K VDC min. ………….………………………… Suffix “HM” Models
48V ..................... 100Vdc max.
Isolation Resistance .....................................................…… 10
9
ohm min.
Input Filter ………………………………………………….…….……..... Pi Type
Isolation Capacitance…………………..…………………… 250pF Typ.
OUTPUT SPECIFICATIONS:
Switching Frequency ...................................................... 100KHz, min.
Voltage Accuracy ..........................................................................
±2.0% max.
Operating Ambient Temperature Range .......................... -25℃ to +71℃
Voltage Balance (Dual) .................................................................. ±1.0% max.
“-E” models: -40℃ to +85℃ with Derating
Temperature Coefficient …………………………………………… ±0.05%/℃
Power de-rating Curve ……………………………………….. see Figure1
Ripple & Noise, 20MHz BW (Note 5) ……. 3.3V/5V ….…… 100mV p-p, max
Case Temperature (Note 4) … Plastic/Copper case... 95℃/100℃ max.
12V/15V ………… 1% p-p max.
Cooling ……………………………………………….. Natural Convection
Short Circuit Protection ……………………………………………… Continuous
Storage Temperature Range ………....….......……........ -40℃ to +100℃
Line Regulation ……...… Single/Dual (Note 1) ….……………. ±0.5% max.
Humidity .................................................. 95% RH max. Non condensing
Load Regulation …….… Single (Note 2) ..….…......……….... ±0.5% max.
MTBF ………. MIL-STD-217F ..……..……………………… 2000Khrs typ.
Dual (Note 3) ……….…………………±1.0% max.
“-E” models: 1800Khrs typ.
Start up time …………………………………….………………..…... 5 ms max.
Dimensions …….. DIP…..… 1.25×0.80x0.40 inches(31.8x20.3×10.2mm)
NOTE:
SMD ..… 1.25×0.80x0.45 inches(31.8x20.3×11.4mm)
1. Measured From High Line to Low Line
S/HS Models (note 6) … 1.25×0.80x0.41 inches(31.8x20.3×10.4mm)
2. Measured From Full Load to 10% Load
Case Material:
3. Measured From Full Load to 1/4 Load
Standard Models ………….…………… Non-Conductive Black Plastic
4. Maximum case temperature under any operating condition should
Suffix “M” Models .. Black Coated Copper with Non-conductive Base
not exceed 95℃(Plastic Case),100℃(Copper Case)
Suffix “S” Models …….……………………..…………… SMD package
5. The output noise is measured with 0.1uF MLCC across for SMD package
Weight …………………………………………………………………... 12.5g
6. S and HS models for “E” Version Only
Case A Dimensions:
BOTTOM
VIEW
SEE NOTE
PIN CONNECTION
500 VDC 1.5K & 3K VDC
Pin Single Output Dual Output
1,24
2,23
3,22
10,15
11,14
12,13
+V Input
NC
NC
-V Output
+V Output
-V Input
+V Input
-V Output
-V Input
Common
Common
+V Output
* NP-NO PIN
* NC-NO CONNECTION WITH PIN
NOTE:Pin Size is 0.02 ±0.002Inch (0.5±0.05mm)DIA
All Dimensions In Inches (mm)
Tolerances Inches: X.XX= ±0.02 , X.XXX= ±0.010
Millimeters: X.X= ±0.5 , X.XX=±0.25
9
4
20,21
CASE AS
TOP
VIEW
DIP SMD
NP NC
NP NC
NP NC
DIP SMD Pin Single Output Dual Output
DIP SMD DIP SMD
NP NC
NP NC
NP NC
NC
NC -V Output
Common
-V Input -V Input
+V Output
+V Output
Common
-V Output
+V Input +V Input
1,24
2,3
10,15
11
12,13
14
9
22,23
16
4,5
20,21
NP NC NP NC
NP NC NP NC
NC NC
NP NC NP NC
NP NC NP NC
16 NP NC NP NC
5NP NC NP NC
*0.41(10.4)mm for "-E" Version S/HS Models
Figure1.Typical Derating curve for Natural Convection
100
71
-40 100
-40 80
0%
20%
40%
60%
80%
100%
120%
-40 -20 0 20 40 60 80 100
Ambient Temperature(
o
C)
LOAD(%)
Plastic Case
Copper Case
-E Version