1
︳
EC3A SERIES
3 WATT 2:1 INPUT RANGE
DC-DC CONVERTERS
FEATURE
S
* 3W 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 5, 12, 24 or 48VDC.
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”
EC3A01
4.5
-
6
VDC
4.5
-
9
VDC
5
VDC
600 mA
15 mA
15 mA
800 mA
779 mA
75
77
2200uF
EC3A02
4.5-6 VDC 4.5-9 VDC
12
VDC
250 mA
15 mA
15 mA
759 mA
750 mA
79
80
2200uF
EC3A03
4.5
-
6
VDC
4.
5
-
9
VDC
15
VDC
200 mA
15 mA
15 mA
779 mA
750 mA
77
80
2200uF
EC3A04
4.5-6 VDC 4.5-9 VDC
±5
VDC
±300 mA
25 mA
25 mA
779 mA
779 mA
77
77
1000uF
EC3A05
4.5
-
6
VDC
4.5
-
9
VDC
±12
VDC
±125 mA
25 mA
25 mA
789 mA
750 mA
76
80
1000uF
EC3A06
4.5-6 VDC 4.5-9 VDC
±1
5
VDC
±100 mA
25 mA
25 mA
800 mA
750 mA
75
80
1000uF
EC3A07
4.5
-
6
VDC
4.5
-
9
VDC
3.3
VDC
600 mA
15 mA
15 mA
582 mA
550 mA
68
72
2200uF
EC3A11
9
-
18
VDC
5
VDC
600 mA
7.5 mA
7.5 mA
325 mA
309 mA
77
81
2200uF
EC3A12
9
-
18
VDC
12
VDC
250 mA
7.5 mA
10 mA
313 mA
298 mA
80
84
2200uF
EC3A13
9
-
18
VDC
15
VDC
200 mA
7.5 mA
10 mA
316 mA
294 mA
79
85
2200uF
EC3A14
9
-
18
VDC
±5
VDC
±300 mA
12 mA
15 mA
325 mA
305 mA
77
82
1000uF
EC3A15
9
-
18
VDC
±12
VDC
±125 mA
12 mA
12 mA
325 mA
298 mA
77
84
1000uF
EC3A16
9
-
18
VDC
±15
VDC
±100 mA
12 mA
15 mA
316 mA
294 mA
79
85
1000uF
EC3A17
9
-
18
VDC
3.3
VDC
600 mA
7.5 mA
7.5 mA
229 mA
212 mA
72
78
2200uF
EC3A21
18
-
36
VDC
5
VDC
600 mA
5 mA 7.5 mA
158 mA
152 mA
79
82
2200uF
EC3A22
18
-
36
VDC
12
VDC
250 mA
5 mA 7.5 mA
156 mA
145 mA
80
86
2200uF
EC3A23
18
-
36
VDC
15
VDC
200 mA
5 mA 7.5 mA
152 mA
145 mA
82
86
2200uF
EC3A24
18
-
36
VDC
±5
VDC
±300 mA
7.5 mA
7.5 mA
162 mA
152 mA
77
82
1000uF
EC3A25
18
-
36
VDC
±12
VDC
±125 mA
7.5 mA
10 mA
158 mA
147 mA
79
85
1000uF
EC3A26
18
-
36
VDC
±15
VDC
±1
00 mA
7.5 mA
10 mA
154 mA
145 mA
81
86
1000uF
EC3A27
18
-
36
VDC
3.3
VDC
600 mA
5 mA 5 mA
111 mA
106 mA
74
78
2200uF
EC3A31
36
-
72
VDC
5
VDC
600 mA
2 mA 3 mA
78 mA
74 mA
79
84
2200uF
EC3A32
36
-
72
VDC
12
VDC
250 mA
2 mA 3 mA
78 mA
73 mA
80
86
2200uF
EC3A33
36
-
72
VDC
15
VDC
200 mA
2 mA 5 mA
78 mA
73 mA
80
86
2200uF
EC3A34
36
-
72
VDC
±5
VDC
±300 mA
3 mA 5 mA
80 mA
74 mA
78
85
1000uF
EC3A35
36
-
72
VDC
±12
VDC
±125 mA
3 mA 5 mA
80 mA
72 mA
78
87
1000uF
EC3A36
36
-
72
VDC
±15
VDC
±100 mA
3 mA 5 mA
80 mA
72 mA
78
87
1000uF
EC3A37
36
-
72
VDC
3.3
VDC
600 mA
3 mA 3 mA
57 mA
52 mA
72
79
2200uF
2
SPECIFICATIONS
All Specifications Typical At Nominal Line, Full Load, and 25℃ Unless Otherwise Noted
INPUT SPECIFICATIONS: GENERAL SPECIFICATIONS:
Input Voltage Range ….………….......……....... 5V …................4.5-6V, 4.5-9V
Efficiency ….............................................................................. See Table
12V …..................... 9-18V
Isolation Voltage:
24V …..................... 18-36V
500 VDC min. ……………………….………………… Standard Models
48V …................... 36-72V
3K VDC min. …… (Non-Conductive Black Plastic Only) ….. Suffix “H” Models
Input Surge Voltage (100ms max.) …….…… 5V ….………...... 10Vdc max.
1.5K VDC min. ………..…..……………………… Suffix “HM” Models
12V …................. 25Vdc max.
Isolation Resistance ….....................................................… 10
9
ohm min.
24V …................. 50Vdc max.
Isolation Capacitance ………………..…………………..…… 250pF Typ.
48V …............... 100Vdc max.
Switching Frequency …................................................... 100KHz, min.
Input Filter ………………………………………………….…………….. Pi Type
Operating Ambient Temperature Range …...................... -25℃ to +71℃
OUTPUT SPECIFICATIONS:
“-E” models: -40℃ to +85℃
Voltage Accuracy …...................................................................... ±2.0% max.
Power de-rating Curve ………………..……………………….. see Figure1
Voltage Balance (Dual) …..............................................................
±1.0% max.
Case Temperature (Note 4) … Plastic/Copper case … 95℃/100℃ max.
Temperature Coefficient ……………………..……………………… ±0.05%/℃
Cooling ……………………………………………….. Natural Convection
Ripple & Noise, 20MHz BW (Note 5) …… 3.3V/5V ………… 100mV p-p, max.
Storage Temperature Range ………….……....……..... -40℃ to +100℃
12V/15V …………… 1% p-p max.
Humidity .................................................. 95% RH max. Non condensing
Short Circuit Protection ……………………………………………… Continuous
MTBF ………. MIL-STD-217F ..……..……………………… 2000Khrs typ.
Line Regulation ………… Single/Dual (Note 1) …………………. ±0.5% max.
“-E” models: 2500Khrs typ.
Load Regulation ……..… Single (Note 2) …………....…………. ±0.5% max.
Dimensions …… DIP …..… 1.25×0.80x0.40 inches(31.8x20.3×10.2mm)
Dual (Note 3) ….….….………………… ±1.0% max.
SMD …… 1.25×0.80x0.45 inches(31.8x20.3×11.4mm)
Start up time …………………………………….………..….…..……10 ms max.
S/HS Models (note 6) ... 1.25×0.80x0.41 inches(31.8x20.3×10.4mm)
NOTE:
Case Material:
1. Measured From High Line to Low Line
Standard Models …………………….… Non-Conductive Black Plastic
2. Measured From Full Load to 10% Load
Suffix “M” Models .. Black Coated Copper with Non-conductive Base
3. Measured From Full Load to 1/4 Load
Suffix “S” Models ………….……………….…………… SMD package
4. Maximum case temperature under any operating condition should
Weight ………………………………………………….……………… 12.5g
not exceed 95℃(Plastic Case), 100℃(Copper Case).
5. The output noise is measured with 0.1uF MLCC across for SMD package
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 85
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