V27
1
︳
EC4A SERIES
5-6 WATT 2:1 INPUT RANGE
DC-DC CONVERTERS
FEATURES
* 5-6W Isolated Output
* 24-Pin DIP Package
* Efficiency to 84%
* 2:1 Input Range
* Regulated Outputs
* Pi Input Filter
* Continuous Short Circuit Protection
* UL60950-1 Approval for H/HM Versions only
NOTE:
1. Nominal Input Voltage is 12, 24 or 48 VDC.
2. Typical value at nominal input voltage and full load.
INPUT CURRENT
MODEL
NUMBER
INPUT
VOLTAGE
(1)
OUTPUT
VOLTAGE
OUTPUT
CURRENT
NO LOAD FULL LOAD
% EFF.
(2)
CAPACITOR
LOAD MAX.
EC4A01 9-18 VDC
5 VDC 1000 mA 7.5 mA 541 mA 77 4700uF
EC4A02 9-18 VDC
12 VDC 470 mA 7.5 mA 573 mA 82 4700uF
EC4A03 9-18 VDC
15 VDC 400 mA 7.5 mA 625 mA 80 4700uF
EC4A04 9-18 VDC
±12 VDC ±230 mA 12 mA 554 mA 83 2200uF
EC4A05 9-18 VDC
±15 VDC ±190 mA 12 mA 556 mA 81 2200uF
EC4A06 9-18 VDC
±5 VDC ±500 mA 12 mA 541 mA 77 2200uF
EC4A07 9-18 VDC
3.3 VDC 1000 mA 7.5 mA 382 mA 72 4700uF
EC4A11 18-36 VDC
5 VDC 1000 mA 5 mA 260 mA 80 4700uF
EC4A12 18-36 VDC
12 VDC 470 mA 5 mA 280 mA 84 4700uF
EC4A13 18-36 VDC
15 VDC 400 mA 5 mA 298 mA 84 4700uF
EC4A14 18-36 VDC
±12 VDC ±230 mA 7.5 mA 280 mA 82 2200uF
EC4A15 18-36 VDC
±15 VDC ±190 mA 7.5 mA 293 mA 81 2200uF
EC4A16 18-36 VDC
±5 VDC ±500 mA 7.5 mA 260 mA 80 2200uF
EC4A17 18-36 VDC
3.3 VDC 1000 mA 5 mA 186 mA 74 4700uF
EC4A21 36-72 VDC
5 VDC 1000 mA 2 mA 132 mA 79 4700uF
EC4A22 36-72 VDC
12 VDC 470 mA 2 mA 142 mA 83 4700uF
EC4A23 36-72 VDC
15 VDC 400 mA 2 mA 154 mA 81 4700uF
EC4A24 36-72 VDC
±12 VDC ±230 mA 3 mA 142 mA 81 2200uF
EC4A25 36-72 VDC
±15 VDC ±190 mA 3 mA 147 mA 81 2200uF
EC4A26 36-72 VDC
±5 VDC ±500 mA 3 mA 130 mA 80 2200uF
EC4A27 36-72 VDC
3.3 VDC 1000 mA 2 mA 93 mA 74 4700uF
V27
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
Switching Frequency .......................................................... 100KHz min.
OUTPUT SPECIFICATIONS:
Operating Ambient Temperature Range .......................... -25℃ to +71℃
Voltage Accuracy ..........................................................................
±2.0% max.
Power de-rating Curve ……………………………………….. see Figure1
Voltage Balance (Dual) .................................................................. ±1.0% max.
Case Temperature (note4) … Plastic/Copper case... 95℃/100℃ max.
Temperature Coefficient …………………………………………… ±0.05%/℃
Cooling ……………………………………………….. Natural Convection
Ripple & Noise, 20MHz BW …………..…. 3.3V/5V ….…… 100mV pk-pk, max
Storage Temperature Range ………....….......……........ -40℃ to +100℃
12V/15V ………… 1% pk-pk max.
Humidity .................................................. 95% RH max. Non condensing
Short Circuit Protection ……………………………………………… Continuous
MTBF ………. MIL-STD-217F ..……..……………………… 2000Khrs typ.
Line Regulation ………… Single/Dual (note1) ….….…………. ±0.5% max.
Dimensions …….. DIP….. 1.25×0.80x0.40 inches(31.8x20.3×10.2 mm)
Load Regulation …….… Single (note2) ..….…......……….... ±0.5% max.
SMD … 1.25×0.80x0.45 inches(31.8x20.3×11.4 mm)
Dual (note3) ……….………………… ±1.0% max.
Case Material:
NOTE:
Standard Models ………….…………… Non-Conductive Black Plastic
1. Measured From High Line to Low Line.
Suffix “M” Models ….. Black Coated Copper with Non-conductive Base
2. Measured From Full Load to 10% Load.
Suffix “S” Models …….……………………...…………… SMD package
3. Measured From Full Load to 1/4 Load.
Weight …………………………………………………………………... 12.5g
4. Maximum case temperature under any operating condition should
not be exceed 95℃(Plastic Case),100℃(Copper Case).
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 ±0.002 Inch (0.5±0.05 mm)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
Figure1.Typical Derating curve for Natural Convection
95
71
-25
100
0%
20%
40%
60%
80%
100%
120%
-25 0 25 50 75 100
Ambient Temperature(
o
C)
LOAD(%)
Plastic Case
Copper Case
