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What is B0303LS-1W?

This electronic component, produced by the manufacturer "MORNSUN", performs the same function as "DUAL/SINGLE OUTPUT DC-DC CONVERTER".


B0303LS-1W Datasheet PDF - MORNSUN

Part Number B0303LS-1W
Description DUAL/SINGLE OUTPUT DC-DC CONVERTER
Manufacturers MORNSUN 
Logo MORNSUN Logo 


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A_S-1W & B_LS-1W Series
1W, FIXED INPUT, ISOLATED & UNREGULATED
DUAL/SINGLE OUTPUT DC-DC CONVERTER
FEATURES
Efficiency up to 84%
Small Size
Low Temperature Rise
1KVDC Isolation
Operating Temperature Range:
-40°C ~ +85°C
No External Component Required
Industry Standard Pinout
RoHS
PART NUMBER SYSTEM
A0505S-1W
SELECTION GUIDE
Input
Model Number
Voltage(VDC)
Nominal
(Range)
B0303LS-1W
B0305LS-1W
3.3
(3.0-3.6)
A0505S-1W
A0509S-1W
A0512S-1W
A0515S-1W
A0524S-1W
B0503LS-1W
B0505LS-1W
B0506LS-1W
5
(4.5-5.5)
B0507LS-1W
B0509LS-1W
B0512LS-1W
B0515LS-1W
B0524LS-1W
A1205S-1W
A1209S-1W
A1212S-1W
A1215S-1W
B1203LS-1W
B1205LS-1W
12
(10.8-13.2)
B1209LS-1W
B1212LS-1W
B1215LS-1W
Output
Voltage
(VDC)
3.3
5
±5
±9
±12
±15
±24
3.3
5
6
7.2
9
12
15
24
±5
±9
±12
±15
3.3
5
9
12
15
Output Current
(mA)
Max.
Min.
303 31
200 20
±100
±10
±56 ±6
±42 ±5
±33 ±4
±21 ±3
303 31
200 20
167 16
139 14
111 12
83 9
67 7
42 5
±100
±10
±56 ±6
±42 ±5
±33 ±4
303 31
200 20
111 12
83 9
67 7
APPLICATIONS
The A_S-1W & B_LS-1W Series are designed for application
where isolated output is required from a distributed power
system.
These products apply to where:
1) Input voltage variation ±10%;
2) 1KVDC input and output isolation;
3) Regulated and low ripple noise is not required.
Such as: digital circuits, low frequency analog circuits, and
IGBT power device driving circuits.
Input Current
(mA)(typ.)
@Max. @No
Load Load
417
42
392
273
268
253 33
229
241
271
273
267
264
35
252
250
248
237
114
109
17
105
105
112
116
107 14
101
101
Reflected
Ripple
Current
(mA,typ.)
14
20
21
15
22
Max.
Capacitive
Load# (µF)
Efficiency
(%, typ.)
@Max. Load
72
220
74
72
77
100 79
80
82
72
70
70
72
220
78
78
80
81
72
78
100
79
78
74
71
220 76
78
79
Approval
UL
UL
UL
UL
UL CE
UL CE
UL CE
UL CE
UL
UL
UL
UL
UL CE
UL CE
UL CE
UL CE
The copyright and authority for the interpretation of the products are reserved by MORNSUN
A_S-1W&B_LS-1W B/2-2014 Page 1 of 5

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B0303LS-1W equivalent
DESIGN CONSIDERATIONS
1) Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum output load could not be less than 10% of the full 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 -W25/B_LS-W25 series).
2) Overload Protection
Under normal operating conditions, the output circuit of these products has no protection against overload. The simplest method is add a circuit
breaker to the circuit.
3) Recommended circuit
If you want to further decrease the input/output ripple, an capacitor filtering network may be connected to the input and output ends of the DC/DC
converter, see (Figure 2).
It should also be noted that the capacitance of 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).
Dual O utput
Vin
Cin
GN D
DC DC
Cout
Cout
+Vo
0V
-Vo
Single Output
Vin
Cin
GN D
DC DC
(Figure 2)
Cout
+Vo
0V
EXTERNAL CAPACITOR TABLE (TABLE 1)
Vin Cin Single Cout Dual Cout#
(VDC) (µF) Vout (µF) Vout (µF)
(VDC)
(VDC)
3.3/5 4.7 3.3/5/6 10 ±5 4.7
12 2.2 7.2/9 4.7 ±9 2.2
15 2.2 12 2.2 ±12
1
24 1 15 1 ±15 0.47
- - 24 1 ±24 0.47
Note: # For each output. It’s not recommended to connect any external capacitor in the application field with less than 0.5 watt output.
4) Output Voltage Regulation and Over-voltage Protection Circuit
The simplest device for output voltage regulation, over-voltage and over-current protection is a linear regulator and an capacitor filtering network
with overheat protection that is connected to the input or output end in series (Figure 3), the recommended capacitance of its filter capacitor sees
(Table 1), linear regulator based on the actual voltage and current to reasonable selection.
Dual Output
Vin
GND
REG
DC DC
REG
REG
+Vo
0V
-Vo
5) Cannot use in parallel and hot swap
Single Output
Vin REG
GND
DC DC
(Figure 3)
REG
+Vo
0V
Note:
1. Operation under minimum load will not damage the converter; However, they may not meet all specification listed.
2. Max. Capacitive Load tested at input voltage range and full load.
3. All date in the datasheet are measured according to nominal input voltage, rated output load, TA=25, humidity<75%, unless otherwise specified.
4. In this datasheet, all the test methods of indications are based on our corporate standards.
5. The performance in the datasheet is just fit for the part number in the selection guide, and may be different from the customer-designed product, you
can get more details from MORNSUN FAE.
6. Contact us for your specific requirement.
7. Specifications subject to change without prior notice.
MORNSUN Science & Technology Co.,Ltd.
Address: No. 5, Kehui St. 1, Kehui development center, Science Ave., Guangzhou Science City, Luogang district, Guangzhou,P.R.China.
Tel: 86-20-38601850
Fax:86-20-38601272
Http://www.mornsun-power.com
The copyright and authority for the interpretation of the products are reserved by MORNSUN
A_S-1W&B_LS-1W B/2-2014 Page 5 of 5


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B0303LS-1WThe function is DUAL/SINGLE OUTPUT DC-DC CONVERTER. MORNSUNMORNSUN

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