V18

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 .................................……..………......... 1500 VDC min.

48V ….…….... 36 – 75V

Isolation Resistance .....................…….………….……… 10

Under voltage lockout ……….…. 12Vin power up: 8.8V ……. power down: 8V

Isolation Capacitance …………………..………………..…… 1000pF typ.

24Vin power up: 17V ..... power down: 16V

Switching Frequency ............................……...................... 350KHz typ.

48Vin power up: 34V …. power down: 32V

Operating Ambient Temperature Range ...…..…...…….... -40

to +85

℃

℃

Input Surge Voltage (100mS max.) … EC3SB-12Sxx/12DXX …... 25Vdc max.

Derating, Above 71

……………..…. Linearly to Zero Power at +10

℃

5℃

EC3SB-24Sxx/24DXX .…. 50Vdc max.

Case Temperature (note 4) ………………………………………….. 105℃

EC3SB-48Sxx/48DXX … 100Vdc max.

Cooling ………………………………………………… Natural Convection

Input Filter ……………………………… Standard .……………………. PI Type

Storage Temperature Range ...…............……....…....... -55

to +125

℃

℃

SMD …………………….… LC Type

Humidity ……………………………..…… 95% RH max. Non condensing

Positive Logic Remote on/off Control:

MTBF …… MIL-STD-217-F, GB, 25℃, Full Load …….… 1200Khrs typ.

Logic Compatibility …………………….. CMOS or Open Collector TTL

Dimensions ...... DIP ......….. 1.00x1.00x0.4 inches (25.4x25.4x10.2 mm)

Module On ……………………………… >+5.5V to 75VDC or Open Circuit

SMD … 1.00x1.00x0.36 inches (25.4 x 25.4 x 9.2 mm)

Module Off ……………………………..…………….……………. <1.2VDC

Case Material ……..… Black Coated Copper with Non-Conductive Base

OUTPUT SPECIFICATIONS:

Weight …………………………………………………………………. 18g

Voltage Accuracy ………………....……………….......…………… ±1.5% max.

NOTE:

Voltage Balance (Dual) …….…………………………………….…. ±2.0% max.

1. Measured from high line to low line.

Transient Response: 25% Step Load Change ............…............…… <500us

2. Measured from full load to min. load.

Ripple and Noise, 20MHz BW (note 3) ………………..…… 50mV pk-pk max.

3. The output ripple and noise is measured with 10uF tantalum and 1uF

SMD ……………….....…... 120mV pk-pk max.

ceramic capacitor across output.

Temperature Coefficient ....................….………...………...……….. ±0.03%/℃

4. Maximum case temperature under any operating condition should

Short Circuit Protection ...................…....…………………..……….. Continuous

not be exceeded 105℃.

Line Regulation (note 1) ..…... Single ….. DIP±0.2% max., SMD±0.3% max.

5. Suffix ”S” to the model number with SMD packages.

Dual ….………………………..… ±0.5% max.

Load Regulation (note 2)…...... Single …... DIP±0.2% max., SMD±0.5% max.

Dual …….................................... ±1.0% max.

Cross Regulation (Dual output) Load cross variation 10%/100% …. ±5% max.

Over Voltage Protection ……………………….………… Zener or TVS Clamp

External Trim Adj. Range ………………………………….…..………….. ±10%

Current Limit ……………………………………. 110% - 140% Nominal Output

Start up time ………………………………..…………………..……… 20ms max.

SIZE SB Dimensions:

BOTTOM

VIEW

1

2

5

4

3

PIN CONNECTION

Pin

1

2

3

4

5

+Input

-Input

+V Output

Trim

-V Output

Function

1.00

[25.4]

0.400

[10.16]

0.400

[10.16]

0.40

[10.2]

0.200

[5.08]

0.40

[10.2]

0.22

[5.6]

min.

Tolerances Inches: X.XX= ±0.02 , X.XXX= ±0.010

Millimeters: X.X= ±0.5 , X.XX=±0.25

All Dimensions In Inches (mm)

6

0.300

[7.62]

6

Remote

TOP

VIEW

0.100

[2.54]

0.40

[10.2]

1.00

[25.4]

1.00

[25.4]

0.800

[20.32]

1

2

6

3

4

5

2-0.400

[10.16]

0.015

[0.38]

0.055

[1.40]

0.110

[2.79]

0.020

[0.51]

1.22

[30.99]

0.10

[2.54]

0.36

[9.2]

Single

Dual

+Input

-Input

+V Output

Common

-V Output

Remote

THROUGH-HOLE PACKAGE

SMD- PACKAGE

NOTE:Pin Size is 0.04±0.004 Inch (1.0±0.1 mm)DIA

EXTERNAL OUTPUT TRIM

10K Ohms

+Vout

TRIM

-Vout

+Vout

TRIM

-Vout

TRIMPOT

TRIM UP

TRIM DOWN

Typical Derating curve for Natural Convection

-40

105

71

0%

20%

40%

60%

80%

100%

120%

-40

-20

0

20

40

60

80

100

Ambient Temperature(

Natural Convection