MORNSUN reserves the copyright

Specifications subject to change without notice.

E_S-2W & F_S-2W

A/2-2008

Page 2 of 2

ISOLATION SPECIFICATIONS

Item

Test conditions

Min

Typ

Max

Units

Isolation voltage

Tested for 1 minute and 1 mA max

3000

VDC

Isolation resistance

Test at 500VDC

1000

M

Ω

OUTPUT SPECIFICATIONS

Item

Test conditions

Min

Typ

Max

Units

Output power

0.2

2

W

(3.3V output)

±1.5

Line regulation

For Vin change

of

±1%

(others output)

±1.2

(3.3V output)

12

20

(5V output)

10

15

(9V output)

8.3

10

(12V output)

6.8

10

Load regulation

10% to 100% load

(15V output)

6.3

10

%

Output voltage accuracy

See tolerance envelope graph

Temperature drift

100% full load

0.03

%/

°C

Ripple& Noise*

20MHz Bandwidth

75

150

mVp-p

Switching frequency

Full load, nominal input

70

KHz

*Test ripple and noise by

“parallel cable” method. See detailed operation instructions at Testing of

Power Converter section, application notes.

Note:

unless otherwise specified.

2. Dual output models unbalanced load:

±5%.

TYPICAL CHARACTERISTICS

Operating Temp.( C)

o

OUTLINE DIMENSIONS & PIN CONNECTIONS

Dual Output

Single Output

P in

Single

Dual

FOOTPRINT DETAILS

RECOMMENDED FOOTPRINT

diameter:1.00mm(0.039inch)

Note:

Unit:mm(i nch)

Pin section:0.50*0.30mm(0.020*0.012inch)

Pinsection tolerances: 0.10mm( 0.004inch)

General tolerances: 0.25mm ( 0.010inch)

First An gle P ro je ction

1

5

2

6

7

Vin

GND

-Vo

+Vo

0V

1 2

5 6

1 2

Vin

GND

No pin

+Vo

0V

Side view

Bottom view

5

0.90

(0.035)

APPLICATION NOTE

Requirement on output load

To ensure this module can operate efficiently and reliably, During operation, the

minimum output load is not less than 10% of the full load, and that this product should

never be operated under no load! If the actual output power is very small, please

connect a resistor with proper resistance at the output end in parallel to increase the load,

or use our company

’s products with a lower rated output power (E_S-1W&F_S-1W).

Overload Protection

Under normal operating conditions, the output

circuit of these products has no protection against

overload. The simplest method is to connect a

self-recovery fuse in series at the input end or add a

circuit breaker to the circuit.

Recommended circuit

If you want to further decrease the input/output

ripple, an

“LC” filtering network may be connected to

the input and output ends of the DC/DC converter,

see (Figure 1).

Vin

GND

+Vo

0V

DC

Cin

L

L

DC

L Cout

Cout

-Vo

Dual Output

L

Single Output

Vin

GND

+Vo

0V

DC

Cin

L

DC

Cout

(Figure 1)

It should also be noted that the inductance and the

frequency of the

“LC” filtering network should be

staggered with the DC/DC frequency to avoid mutual

interference. However, the capacitance of the output

filter capacitor must be proper. If the capacitance is

too big, a startup problem might arise. For every

channel of output, provided the safe and reliable

operation is ensured, the recommended capacitance

of its filter capacitor sees (Table 1).

EXTERNAL CAPACITOR TABLE (TABLE 1)

Vin

(VDC)

Cin

(uF)

Single

Vout

(VDC)

Cout

(uF)

Dual

Vout

(VDC)

Cout

(uF)

5

4.7

3.3/5

10

4.7

12

2.2

9

4.7

2.2

24

1

12

2.2

1

-

-

15

1

1

It

’s not recommended to connect any external capacitor in

the application field with less than 0.5 watt output.

Output

Voltage

Regulation

and

Over-voltage

Protection Circuit

The simplest device for output voltage regulation,

over-voltage and over-current protection is a linear

voltage regulator with overheat protection that is

connected to the input or output end in series (Figure

2).

Vin

GND

0V

+Vout

DC

DC

-Vout

REG

REG

REG

D ua l Ou tput

Sing le Output

Vin

GND

0V

+Vout

DC

DC

REG

REG

(Figure 2)

No parallel connection or plug and play.