2H

eries

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Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646

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OUTPUT

SPECIFICATIONS

Item

Test conditions

Min.

Typ.

Max.

Units

Output power

0.2

2

W

Line regulation

For Vin change of 1%

±

1.2

%

Load regulation

10% to 100%

load

5V output

10

15

9V output

8.3

15

12V output

6.8

15

15V output

6.3

15

Output voltage accuracy

See tolerance envelope graph

Temperature drift

100% full load

0.03

%/℃

Ripple & Noise*

20MHz Bandwidth

150

250

mVp-p

Switching frequency

Full load,

nominal input

5V input

35

KHz

12V,24V input

50

*Test ripple and noise by

"parallel cable"method. See detailed operation instructions at Testing of Power

Converter section, application notes.

Note: Dual output models unbalanced load: ±5%

TYPICAL

CHARACTERISTICS

OUTLINE

CONNECTIONS

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）.

(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

Cin

Single Vout

Cout

Dual Vout

Cout

(VDC)

(μF)

(VDC)

(μF)

(VDC)

(μF)

5

4.7

5

10

±

5

4.7

12

2.2

9

4.7

±

9

2.2

24

1

12

2.2

±

12

1

--

--

15

1

±

15

1

It's not recommend 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 inp ut or out put end in series (Fig ure 2).

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.

No parallel connection or plug and play.

Note:

1. All specifications measured at Ta=25℃, humidity<75%,nominal input

voltage and rated output load unless otherwise specified.

2. Only typical models listed, other models may be different, please contact

our technical person for more details.

3. Operation under minimum load will not damage the converter; However,

they may not meet all specification listed.

Microdc Professional Power Module,Inc.

Tel:0086-20-86000646 E-mail:tech@microdc.cn

Website:http://www.microdc.cn

RoHS COMPLIANT INFORMATION

This series is compatible with RoHS soldering systems with a peak wave solder temperature

of 300°C for 10 seconds.

The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin

with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this

series are backward compatible with Sn/Pb soldering systems.

REACH COMPLIANT INFORMATION

This series has proven that this product does not contain harmful chemicals, it also has

harmful chemical substances through the registration, inspection and approval.