MORNSUN reserves the copyright

Specifications subject to change without notice.

E_S-1W & F_S-1W

A/1-2007

Page 2 of 2

OUTPUT SPECIFICATIONS

Item

Test conditions

Min

Typ

Max

Units

Output power

0.1

1

W

(3.3 input)

±1.5

Line regulation

For Vin change

of

±1%

(others input)

±1.2

(3.3 output)

12

20

(5V output)

10

15

(9V output)

8.3

15

(12V output)

6.8

15

Load regulation

10% to 100% load

(15V output)

6.3

15

%

Output voltage accuracy

See tolerance envelope graph

Temperature drift

100% full load

0.03

%/

(EXXXXS-1W）

50

75

(EXX24S-1W）

100

150

(FXXXXS-1W）

75

100

Ripple& Noise*

20MHz Bandwidth

(FXX24S-1W）

100

150

mVp-p

Switching frequency

Full load, nominal input

100

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

Pin

Single

Dual

FOOTPRINT DETAILS

RECOMMENDED FOOTPRINT

diameter:1.00mm

Note:

Unit:mm(inch)

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

Pin tolerances: 0.10mm( 0.004inch)

General tolerances: 0.25mm( 0.010inch)

First Angle Projection

1

5

2

6

7

GND

-V0

+Vo

0V

1 2

5 6

1 2

GND

No pin

+Vo

0V

Sid e view

Bot tom view

5

Vin

Vin

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-W25&F_S-W25).

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)

3.3/5

4.7

3.3/5

10

4.7

12

2.2

9

4.7

2.2

15

2.2

12

2.2

1

24

1

15

1

0.47

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

(Fi g u re 2)

No parallel connection or plug and play.