MORNSUN reserves the copyright

Specifications subject to change without notice.

IB_S-2W

A/2-2008

Page 2 of 2

OUTPUT SPECIFICATIONS

Item

Test Conditions

Min

Typ

Max

Units

Storage humidity

95

%

Operating temperature

-40

85

Storage temperature

-55

125

Temp. rise at full load

40

58

Lead temperature

1.5mm from case for 10 seconds

300

°C

Short circuit protection

Continuous

Cooling

Free air convection

Case material

Plastic(UL94-V0)

MTBF

3500

K hours

Weight

2.8

g

TYPICAL TEMPERATURE CURVE

Operating Temp.(

)

C

OUTLINE DIMENSION & PIN CONNECTIONS

FOOTPRINT DETAILS

Pin

RECOMMENDED FOOTPRINT

diameter:1.00mm(0.039inch)

Note:

Unit:mm(inch)

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

Pin section tolerances: 0.10mm( 0.004inch)

General tolerances: 0.25mm( 0.010inch)

First Angle Projection

1 2

4

6

(0.079)

(0.200)

1

2

4

6

Vin

GND

0V

+Vo

Function

5.08

(Bottom View)

(Side View)

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.

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).

L

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 greatest capacitance of its filter

capacitor sees (Table 1).

EXTERNAL CAPACITOR TABLE (Table 1)

Vin

(VDC)

Cin

(uF)

Vout

(VDC)

Cou

(uF)

5

4.7

5

4.7

12

2.2

-

-

15

1

-

-

24

0.47

-

-

It

’s not recommended to connect any external capacitor

in the application field with less than 0.5 watt output.

Overload Protection

Under

normal

operating

conditions,

the

output

circuit

of

these

products

has

no

protection against over-current. The simplest

method is to connect a self-recovery fuse in

series at the input end or add a circuit breaker

to the circuit.

Input Over-voltage Protection Circuit

The simplest device for input over-voltage

protection is a linear voltage regulator with

overheat protection that is connected to the

input end in series (Figure 2).

Vin

GND

REG

+Vo

DC

DC

0V

(Figure 2)

When the environment temperature is higher

than 71

°C, the product output power should

be less then 60% of the rated power.

No parallel connection or plug and play.