MORNSUN reserves the copyright

Specifications subject to change without notice.

A_S-2W & B_S-2W

A/1-2008

Page 2 of 2

ISOLATION SPECIFICATIONS

Item

Test conditions

Min

Typ

Max

Units

Isolation voltage

Tested for 1 minute and 1 mA max

1000

VDC

Isolation resistance Test at 500VDC

1000

M

Ω

OUTPUT SPECIFICATIONS

Item

Test conditions

Min

Typ

Max

Units

Output power

0.2

2

W

Line regulation

For Vin change of 1%

±1.2

(5V output)

12.8

15

(9V output)

8.3

15

(12V output)

6.8

15

(15V output)

6.3

15

Load regulation

10% to 100% load

(24V output)

5

15

%

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

75

KHz

Converter section, application notes.

Note:

unless otherwise specified.

2. Dual output models unbalanced load:

±5%.

TYPICAL CHARACTERISTICS

(

)

OUTLINE DIMENSIONS & PIN CONNECTIONS

1 2

4 5 6

(0.079)

Dual Output

Single Output

Pin

Singles

Duals

1

2

4

6

5

Vin

GND

0V

+Vo

No Pin

Vin

GND

-V0

+Vo

0V

FOOTPRINT DETAILS

1 2

4

6

(0.100)

RE COMMENDED FOOTPRINT

diameter:1.00mm(0.039inch)

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

(0.020)

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 (A_S-1W /B_LS-1W Series).

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 testing and application 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

greatest 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

5

10

±5

4.7

12

2.2

9

4.7

±9

2.2

15

2.2

12

2.2

±12

1

24

1

15

1

±15

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

-Vo ut

R EG

REG

REG

Dual O u tput

S ingle Ou tput

Vin

GND

0V

+Vout

DC DC

R EG

REG

(Figure 2)

No parallel connection or plug and play.